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  • gevent install on x86_64 fails: "undefined symbol: evhttp_accept_socket"

    - by digitala
    I'm trying to install gevent on a fresh EC2 CentOS 5.3 64-bit system. Since the libevent version available in yum was too old for another package (beanstalkd) I compiled/installed libevent-1.4.13-stable manually using the following command: ./configure --prefix=/usr && make && make install This is the output from installing gevent: [gevent-0.12.2]# python setup.py build --libevent /usr/lib Using libevent 1.4.13-stable: libevent.so running build running build_py running build_ext Linking /usr/src/gevent-0.12.2/build/lib.linux-x86_64-2.6/gevent/core.so to /usr/src/gevent-0.12.2/gevent/core.so [gevent-0.12.2]# cd /path/to/my/project [project]# python myscript.py Traceback (most recent call last): File "myscript.py", line 9, in <module> from gevent.wsgi import WSGIServer as GeventServer File "/usr/lib/python2.6/site-packages/gevent/__init__.py", line 32, in <module> from gevent.core import reinit ImportError: /usr/lib/python2.6/site-packages/gevent/core.so: undefined symbol: evhttp_accept_socket I've followed exactly the same steps on a local VirtualBox instance (32-bit) and I'm not seeing any errors. How would I fix this?

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  • How do I programmatically create a bootable CD?

    - by Nicholas Flynt
    I'm using a barebones tutorial as the basis for an OS I'm working on, and it seems to be an older tutorial: it has be compiling the kernel down to a floppy image, and then loading it with GRUB. Basically, I still want to use GRUB, but I'd like to have my OS run from a CD instead. The main reason is that I don't actually have a real floppy drive available (I'm testing in VirtualBox currently) and I thus have no way to test my OS on real hardware. I've been poking around on the net, and I can find lots of utilities that create a bootable CD from a floppy image, but these all seem to require an actual floppy drive, plus it's not really what I'm looking for. I'd like to be able to end up with a bootable CD during my make step ideally, without needing to first place the image on a floppy, which seems rather pointless. I guess the easy way to answer this: How do I set up GRUB to read my kernel image from a CD? Will I need a special utility to do this from Windows? (The kernel can't compile itself yet, that's not for a looong while) Thanks!

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  • Problem with RVM and gem that has an executable

    - by djhworld
    Hi there, I've recently made the plunge to use RVM on Ubuntu. Everything seems to have gone swimmingly...except for one thing. I'm in the process of developing a gem of mine that has a script placed within its own bin/ directory, all of the gemspec and things were generated by Jeweler. The bin/mygem file contains the following code: - #!/usr/bin/env ruby begin require 'mygem' rescue LoadError require 'rubygems' require 'mygem' end app = MyGem::Application.new app.run That was working fine on the system version of Ruby. Now...recently I've moved to RVM to manage my ruby versions a bit better, except now my gem doesn't appear to be working. Firstly I do this: - rvm 1.9.2 Then I do this: - rvm 1.9.2 gem install mygem Which installs fine, except...when I try to run the command for mygem mygem I just get the following exception: - daniel@daniel-VirtualBox:~$ mygem <internal:lib/rubygems/custom_require>:29:in `require': no such file to load -- mygem (LoadError) from <internal:lib/rubygems/custom_require>:29:in `require' from /home/daniel/.rvm/gems/ruby-1.9.2-p136/gems/mygem-0.1.4/bin/mygem:2:in `<top (required)>' from /home/daniel/.rvm/gems/ruby-1.9.2-p136/bin/mygem:19:in `load' from /home/daniel/.rvm/gems/ruby-1.9.2-p136/bin/mygem:19:in `<main>'mygem NOTE: I have a similar RVM setup on MAC OSX and my gem works fine there so I think this might be something to do with Ubuntu?

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  • Where is mpx386.6 and start.c in Minix 3.2?

    - by John Bowlinger
    I'm trying to follow along in Operating Systems and Implementation 3rd edition and I'm now at the part in the book where Tanenbaum is discussing bootup and kernel process switching. He keeps referring to these 2 files (mpx386.s, start.c) that are supposedly in a directory called kernel, but I can't seem to find them. In the root directory, when I go to boot/minix/3.2.0/kernel, kernel just seems to be a binary file that is illegible in terminal. There also seems to be a bunch of mod01-mod12 gz binary files as well in the 3.2.0 directory. Am I in the wrong directory, or is there something I need to install and do to read kernel? I would like to follow along with the book to what's on my screen, instead of constantly flipping back and forth. I realize alot of files are completely different from this book published in 2006 and I accept that, but this seems to be a critical juncture of the book and the operating system as a whole. If it's any consolation, I'm running the OS in Virtualbox on a 64-bit Macbook.

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  • What's a good way to do testing a plug-in on multiple Windows and Outlook versions?

    - by Andrei
    Hello, We're building a plug-in for Outlook that should work on multiple Windows versions (XP, Vista, 7) and also with different Outlook versions (2003, 2007, 2010). The testing problem I am facing right now, is that I can't figure out a good/convenient/thorough way to test the application on multiple Windows and Outlook versions. At the moment, I have a VirtualBox which runs many virtual machines, with different Windows versions and Outlook versions. So I would have a virtual machine with Windows 7 testing Outlook 2010, and another one with Windows 7 testing Outlook 2007, Windows Vista with Outlook 2010 and so on, going through some of the possible combinations. It kind of gets the job done, although it is cumbersome and takes a long time to test. Some of the testing included in the application is unit testing, but this is also rather tied in with the machine I test it on (windows 7 with outlook 2010). For example, I was using ManagementObject recently, which worked fine on my system (and thus passed the unit test for that method), however, using that object threw an exception in another person's system, which crashed the application. I work on Visual Studio 2010 Ultimate. The questions: Is there a more elegant way to make the testing process more streamline and more efficient? Any other testing methods you recommend? How would you deal with this problem? Thanks! Looking forward to your replies.

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  • VMWare-Mount not recognizing virtual disks

    - by user36175
    I have two disks as .vmdk files, and four as .vdi files. I can boot virtual machines on them with Sun xMV VirtualBox, and they work just fine. However, I want to mount them on my local computer so I can read some files off of them without starting a virtual machine. I downloaded the vmware-mount utility, but I get this error, even when mounting .vmdk files, which should be VMWare images... Unable to mount the virtual disk. The disk may be in use by a virtual machine, may not have enough volumes or mounted under another drive letter. If not, verify that the file is a valid virtual disk file. Thinking it's a problem with the utility, I downloaded the SDK and made my own simple program in C to try to mount a disk. It just initializes the API, connects to it, then attempts to open the disk. I get this error, once again claiming it is not a virtual disk: **LOG: DISKLIB-DSCPTR: descriptor above max size: I64u **LOG: DISKLIB-LINK : "f:\programming\VMs\windowstrash.vdi" : failed to open (The file specified is not a virtual disk). **LOG: DISKLIB-CHAIN : "f:\programming\VMs\windowstrash.vdi" : failed to open (The file specified is not a virtual disk). **LOG: DISKLIB-LIB : Failed to open 'f:\programming\VMs\windowstrash.vdi' with flags 0x1e (The file specified is not a virtual disk). ** FAILURE ** : The file specified is not a virtual disk The files are clearly virtual disks, though, since I can actually mount and use them with a virtual machine. I tried detaching them from any VMs and trying again, but I got the same results. Any ideas? Maybe the "descriptor above max size" is a hint? Some more info: the .vmdk disks were created on other computers. I just copied them to mine and created new VMs around them, but they work fine. All the .vdi files were created on my machine. Not sure if that affects anything. Update: WinMount can mount the file.. so the problem seems to be with vmware-mount.

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  • Installing Glassfish 3.1 on Ubuntu 10.10 Server

    - by andand
    I've used the directions here to successfully install Glassfish 3.0.1 on an virtualized (VirtualBox and VMWare) Ubuntu 10.10 Server instance without any real difficulty not resolved by more closely following the directions. However when I try applying them to Glassfish 3.1, I seem to keep getting stuck at section 6. "Security configuration before first startup". In particular, there are some differences I noted: 1) There are two keys in the default keystore. The 's1as' key is still there, but another named 'glassfish-instance' is also there. When I saw this, I deleted and recreated them both along with a 'myAlias' key which I was going to use where needed. 2) When turning the security on it seems like part of the server thinks it's on, but others don't. For instances: $ /home/glassfish/bin/asadmin set server-config.network-config.protocols.protocol.admin-listener.security-enabled=true server-config.network-config.protocols.protocol.admin-listener.security-enabled=true Command set executed successfully. $ /home/glassfish/bin/asadmin get server-config.network-config.protocols.protocol.admin-listener.security-enabled server-config.network-config.protocols.protocol.admin-listener.security-enabled=true Command get executed successfully. $ /home/glassfish/bin/asadmin --secure list-jvm-options It appears that server [localhost:4848] does not accept secure connections. Retry with --secure=false. javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake Command list-jvm-options failed. $ /home/glassfish/bin/asadmin --secure=false list-jvm-options -XX:MaxPermSize=192m -client -Djavax.management.builder.initial=com.sun.enterprise.v3.admin.AppServerMBeanServerBuilder -XX: UnlockDiagnosticVMOptions -Djava.endorsed.dirs=${com.sun.aas.installRoot}/modules/endorsed${path.separator}${com.sun.aas.installRoot}/lib/endorsed -Djava.security.policy=${com.sun.aas.instanceRoot}/config/server.policy -Djava.security.auth.login.config=${com.sun.aas.instanceRoot}/config/login.conf -Dcom.sun.enterprise.security.httpsOutboundKeyAlias=s1as -Xmx512m -Djavax.net.ssl.keyStore=${com.sun.aas.instanceRoot}/config/keystore.jks -Djavax.net.ssl.trustStore=${com.sun.aas.instanceRoot}/config/cacerts.jks -Djava.ext.dirs=${com.sun.aas.javaRoot}/lib/ext${path.separator}${com.sun.aas.javaRoot}/jre/lib/ext${path.separator}${com.sun.aas.in stanceRoot}/lib/ext -Djdbc.drivers=org.apache.derby.jdbc.ClientDriver -DANTLR_USE_DIRECT_CLASS_LOADING=true -Dcom.sun.enterprise.config.config_environment_factory_class=com.sun.enterprise.config.serverbeans.AppserverConfigEnvironmentFactory -Dorg.glassfish.additionalOSGiBundlesToStart=org.apache.felix.shell,org.apache.felix.gogo.runtime,org.apache.felix.gogo.shell,org.apache.felix.gogo.command -Dosgi.shell.telnet.port=6666 -Dosgi.shell.telnet.maxconn=1 -Dosgi.shell.telnet.ip=127.0.0.1 -Dgosh.args=--nointeractive -Dfelix.fileinstall.dir=${com.sun.aas.installRoot}/modules/autostart/ -Dfelix.fileinstall.poll=5000 -Dfelix.fileinstall.log.level=2 -Dfelix.fileinstall.bundles.new.start=true -Dfelix.fileinstall.bundles.startTransient=true -Dfelix.fileinstall.disableConfigSave=false -XX:NewRatio=2 Command list-jvm-options executed successfully. Also the admin console responds only to http (not https) requests. Thoughts?

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  • Trying to setup postfix

    - by Frexuz
    I used this guide: http://jonsview.com/how-to-setup-email-services-on-ubuntu-using-postfix-tlssasl-and-dovecot telnet localhost 25 says 220 episodecalendar.com ESMTP Postfix (Ubuntu) ehlo localhost 250-episodecalendar.com 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-AUTH LOGIN PLAIN 250-AUTH=LOGIN PLAIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN Installation seems fine? /var/log/mail.log says Nov 26 14:04:06 ubuntu postfix/pickup[12107]: A742E2B9E1: uid=0 from=<root> Nov 26 14:04:06 ubuntu postfix/cleanup[12114]: A742E2B9E1: message-id=<[email protected]> Nov 26 14:04:06 ubuntu postfix/qmgr[12108]: A742E2B9E1: from=<[email protected]>, size=300, nrcpt=1 (queue active) Nov 26 14:04:06 ubuntu postfix/local[12115]: A742E2B9E1: to=<[email protected]>, relay=local, delay=3.3, delays=3.3/0/0/$ Nov 26 14:04:06 ubuntu postfix/cleanup[12114]: AD2662B9E0: message-id=<[email protected]> Nov 26 14:04:06 ubuntu postfix/qmgr[12108]: AD2662B9E0: from=<>, size=2087, nrcpt=1 (queue active) Nov 26 14:04:06 ubuntu postfix/bounce[12117]: A742E2B9E1: sender non-delivery notification: AD2662B9E0 Nov 26 14:04:06 ubuntu postfix/local[12115]: AD2662B9E0: to=<[email protected]>, relay=local, delay=0.02, delays=0.01/0/0/0$ Nov 26 14:04:06 ubuntu postfix/qmgr[12108]: AD2662B9E0: removed Nov 26 14:04:06 ubuntu postfix/qmgr[12108]: A742E2B9E1: removed I'm not really understanding the log file, and obviously I'm not getting any emails. Right now I'm running Ubuntu on a Virtualbox (development box). Is that a problem? The internet connection works fine on it. What about domains etc..? edit: /etc/postfix/main.cf # See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name will cause the first # line of that file to be used as the name. The Debian default # is /etc/mailname. #myorigin = /etc/mailname smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = no # TLS parameters smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.crt smtpd_tls_key_file = /etc/postfix/ssl/smtpd.key smtpd_use_tls = yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for # information on enabling SSL in the smtp client. # See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name will cause the first # line of that file to be used as the name. The Debian default # is /etc/mailname. #myorigin = /etc/mailname smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = no # TLS parameters smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.crt smtpd_tls_key_file = /etc/postfix/ssl/smtpd.key smtpd_use_tls = yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for # information on enabling SSL in the smtp client.

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  • Tying down a cloud by virtualizing everything and then locking VMs to real hardware as necessary

    - by tudor
    I'm looking for a cloud software solution that: Can run on both server and desktop machines; Virtualizes hardware and has the option of exposing each real machine to the cloud; Allows a VM to be "locked" to a set of real hardware capabilities and stay there until moved (e.g. a user's "real" desktop); Allows a VM to link to some types of devices elsewhere (e.g. USB/serial via ethernet); and Is geography-aware to control movement of VMs between real networks. I'm aware that this may be the holy grail of virtualization, and I've searched alot. Some solutions appear to meet some criteria but not others. Most cloud implementations appear to ignore real hardware, for example. I realise that this may be solved by using three different implementations in combination: A standard cloud server farm. A bare-metal network backup utility with PXEBoot. VNC and/or VDI. (VNC obviously would require the real hardware to be running.) This combination, however, has some serious drawbacks that I'd like to solve by treating it as one system. My explanation follows... I have a network of real servers and desktops in multiple locations. I've virtualized servers before using Virtualbox and that's worked quite well. I've even connected USB devices to VMs on servers. I would like to virtualize the desktops in all my offices to facilitate movement of desktops, remote access (e.g. VDI) and bare-metal backups. However, I know that there are problems with this. For example, some desktops have specific hardware (e.g. 3D graphics cards, USB devices, etc) that limit their mobility. Geographic constraints also limit movement in that VMs can be moved easily within offices, but transferring between offices is not always preferable. What I would like to find is a system that can virtualize everything from bare-metal easily by maintaining an abstraction layer on each client and server machine that exposes the hardware available and runs as a cloud. Then certain VMs would be "locked" to specific hardware (so that, e.g. the VM runs only on their own desktop.) This would be required for situations where speed is important (e.g. 3D graphics pass-through). In addition, abstracted low-speed devices (e.g. USB) could be piped from real hardware to a VM in the cloud. This is important since if a VM is taken down, another VM can connect to the real hardware for minimum downtime.

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  • Is it possible to "stealth" dual boot a machine?

    - by BrianH
    I have a loaner laptop that has MS Windows with locked down permissions. It works okay for what I need to do, but I started wondering if there was a way to install a separate Windows OS on a separate hard drive to do what I want to do on it. Virtual I wish I could use VirtualBox or VMWare, but that is not an option (I even tried VBox portable). External Drive My next trial was see if it was possible to install Windows on an external drive, and then plug that drive in and boot from it whenever I wanted my own OS. After a few Google searches, I see that is not really a possibility. Swap Primary Drive Another option, would be to get a second internal hard drive, take the existing HD out, and install a new Windows OS on the secondary HD. This would mean swapping the internal hard drive each time I want to switch OSs - doable, but not very convenient. Dual Boot The laptop has an expansion slot where a second hard drive can be plugged in quickly. I thought about Dual booting, but I don't want to mess with the MBR on the primary hard drive. When I have to give the laptop back, I don't want a dual-boot screen to popup. Summary Is there a way to have 2 hard-drives on a machine, each with it's own OS, and maybe use BIOS settings to have only 1 hard drive active at a time? That way both hard drives could be physically connected, but only one would actually be active at a time. I basically want a second OS that does not (can not) affect the existing OS in any way, and can be removed at any time without affecting the existing OS. The secondary OS does not need any of the files on the main hard drive - it's basically like having 2 separate computers using the same hard ware... Is this possible, or would it be easier just to go out and buy a different laptop? Thanks in advance! EDIT I just discovered that my BIOS allows me to pick (at startup) which hard drive I want to boot from. I poked around in the BIOS and there is not a place to disable certain devices, like the primary hard drive. My only concern about plugging in a second hard drive and installing Windows to the second hard drive is that it will mess with the primary hard drive, or add a bootloader screen to pick which windows install to use. My thought would be to physically unplug the primary, plug in the secondary and install windows to the secondary. After the install is working properly, I can plug the primary back in and use the BIOS feature to determine which drive to boot to. Is there any way after I have 2 separate installs on 2 separate hard drives that one of the installs could mess with the MBR on the other drive?

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  • Cobbler 2.2.2 problems

    - by Peter
    I have setup a dedicated LAN for Cobbler tests. My setup is: Cobbler server: openSUSE 12.3, cobbler 2.2.2 (from openSUSE repos) Imported distros: Centos 6.5, Red Hat 6.5, Red Hat 7.0, openSUSE 13.1 Target Machine: VMs in a Windows 7 Virtualbox Systems provisioning works OK, but I have some problems. The first one is that cobbler does not honor the "pxe_just_once: 1" setting. When the setup of the target OS is finished, after the reboot the target systems continues to PXE boot! The second problem is that the target server is not correctly configured! See my setup: cobbler system report --name=test Name : test TFTP Boot Files : {} Comment : Fetchable Files : {} Gateway : 192.168.0.1 Hostname : testcob1.example.com Image : IPv6 Autoconfiguration : False IPv6 Default Device : Kernel Options : {} Kernel Options (Post Install) : {} Kickstart : <<inherit>> Kickstart Metadata : {} LDAP Enabled : False LDAP Management Type : authconfig Management Classes : [] Management Parameters : <<inherit>> Monit Enabled : False Name Servers : ['192.168.0.1', '8.8.8.8'] Name Servers Search Path : [] Netboot Enabled : False Owners : ['admin'] Power Management Address : Power ID : Power Password : Power Management Type : ipmitool Power Username : Profile : RHEL-6.5-x86_64 Proxy : <<inherit>> Red Hat Management Key : <<inherit>> Red Hat Management Server : <<inherit>> Repos Enabled : False Server Override : <<inherit>> Status : testing Template Files : {} Virt Auto Boot : <<inherit>> Virt CPUs : <<inherit>> Virt Disk Driver Type : <<inherit>> Virt File Size(GB) : <<inherit>> Virt Path : <<inherit>> Virt RAM (MB) : <<inherit>> Virt Type : <<inherit>> Interface ===== : eth0 Bonding Opts : Bridge Opts : DHCP Tag : DNS Name : Master Interface : Interface Type : IP Address : 192.168.0.200 IPv6 Address : IPv6 Default Gateway : IPv6 MTU : IPv6 Secondaries : [] IPv6 Static Routes : [] MAC Address : Management Interface : True MTU : Subnet Mask : 255.255.255.0 Static : True Static Routes : [] Virt Bridge : So, although I have setup the hostname and the network interface of the target system, after the setup, the hostname is set to localhost.localdomain and eth0 is configured as a DHCP not static! How can I find the problem and fix it? Note that I have synced and restarted cobbler a couple of times, but the problems persists.

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  • Which hardware to VM ratio for Build-Server virtualization?

    - by Martin
    Let's start with saying that I'm a total noob wrt. to server virtualization. That is, I use VMs often during development, but they're simple desktop machine things for me. Now to my problem: We have two (physical) build servers, one master, one slave running Jenkins to do daily tasks and build (Visual C++ Builds) our release packages for our software. As such these machines are critical to our company, because we do lot's releases and without a controlled environment to create them, we can't ship fixes. (And currently there's no proper backup of these machines in place, because they do not hold any data as such - it just would be a major pain to setup them again should they go bust. (But setting up backup that I'd know would work in case of HW failure would even be more pain, so we have skipped that until now.)) Therefore (and for scaling purposes) we would like to go virtual with these machines. Outsourcing to the cloud is not an option, not at all, so we'll have to use on-premises hardware and VM hosts. Each Build-Server (master or slave) is a fully configured (installs, licenses, shares in case of the master, ...) Windows Server box. I would now ideally like to just convert the (two) existing physical nodes to VM images and run them. Later add more VM slave instances as clones of the existing ones. And here begin my questions: Should I go for one VM per one hardware-box or should I go for something where a single hardware runs multiple VMs? That would mean a single point of failure hardware wise and doesn't seem like a good idea ... or?? Since we're doing C++ compilation with Visual Studio, I assume that during a build the hardware (processor cores + disk) will be fully utilized, so going with more than one build-node per hardware doesn't seem to make much sense?? Wrt. to hardware options, does it make any difference which VM software we use (VMWare, MS, Virtualbox, ... ?) (We're using Windows exclusively for our builds.) Regarding budget: We have a normal small company (20 developers) budget for this. ;-) That is, if it's going to cost a few k$ it's going to cost. If it's free - the better. I strongly prefer solutions where there's no multi-k$ maintenance costs per year.

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  • Should I choose KVM/XEN over OpenVZ or use them together?

    - by Krystian
    I've got a dual xeon e5504 server, with [for now] only 8GB of ram. Storage is'n impressive either: 3x 146GB sas in raid5 + 500GB sata drives. Currently it works as a development server, but it's over speced for our needs and since our development methods changed through last 2 years we decided it will work as a production system for some of our applications + we would like to have a separate system for testing/research. Our apps are mainly web apps deployed on tomcats [plural as some of the apps require older versions] and connected to Postgres. I would like to have a production system, where only httpd+tomcat+db are setup and nothing else runs there. Sterile system. Apart from that, I would like a test system, where I can play with different JVM settings, deploy my test apps, play with tomcat/httpd settings and restart them without interfering with the production system. Apart from that, I would like to be able to play with different linux flavors, with newer kernels to test how they work etc. I know, this is not possible with OpenVZ and I would have to choose KVM for that. I am thinking about merging the two, and setting up a KVM to be able to work with different systems [linux only to be frank] + use openVZ to setup separate machines for my development needs. I would simply go with that, but reading here and there about the performance impact full virtualization has over containers and looking at the specs of my server makes me think twice about it. I don't want to loose too much performance, especially because of the nature of my apps [few JVMs running at the same time]. It will be my first time with virtualization, apart from using desktop virtualbox/vmserver. Although I am a fast learner I don't want to mess with the main system so much that it will break the production apps or make them crawl. Although they are more or less internal apps and they don't produce much load, they need to be stable. I've read, that KVM host is a normal linux installation and it allows to run normal processes on it. If that is so, does it allow to run openVZ as well? I mean... can I have KVM and OpenVZ running on the same system/kernel? Or do I have to setup another system to run OpenVZ containers? How much performance impact can this have for me? Will my hardware suffice? oh and one more thing... unfortunately I'm quite limited with the funds... I'm looking for a free solution only :/

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  • SQLAuthority News – Speaking Sessions at TechEd India – 3 Sessions – 1 Panel Discussion

    - by pinaldave
    Microsoft Tech-Ed India 2010 is considered as the major Technology event of the year for various IT professionals and developers. This event will feature a comprehensive forum in order   to learn, connect, explore, and evolve the current technologies we have today. I would recommend this event to you since here you will learn about today’s cutting-edge trends, thereby enhancing your work profile and getting ahead of the rest. But, the most important benefit of all might be the networking opportunity that that you can attain by attending the forum. You can build personal connections with various Microsoft experts and peers that will last even far beyond this event! It also feels good to let you know that I will be speaking at this year’s event! So, here are the sessions that await you in this mega-forum. Session 1: True Lies of SQL Server – SQL Myth Buster Date: April 12, 2010  Time: 11:15pm – 11:45pm In this 30-minute demo session, I am going to briefly demonstrate few SQL Server Myth and their resolution backing up with some demo. This demo session is a must-attend for all developers and administrators who would come to the event. This is going to be a very quick yet  fun session. Session 2: Master Data Services in Microsoft SQL Server 2008 R2 Date: April 12, 2010  Time: 2:30pm-3:30pm SQL Server Master Data Services will ship with SQL Server 2008 R2 and will improve Microsoft’s platform appeal. This session provides an in depth demonstration of MDS features and highlights important usage scenarios. Master Data Services enables consistent decision making by allowing you to create, manage and propagate changes from single master view of your business entities. Also with MDS – Master Data-hub which is the vital component helps ensure reporting consistency across systems and deliver faster more accurate results across the enterprise. We will talk about establishing the basis for a centralized approach to defining, deploying, and managing master data in the enterprise. Session 3: Developing with SQL Server Spatial and Deep Dive into Spatial Indexing Date: April 14, 2010 Time: 5:00pm-6:00pm Microsoft SQL Server 2008 delivers new spatial data types that enable you to consume, use, and extend location-based data through spatial-enabled applications. Attend this session to learn how to use spatial functionality in next version of SQL Server to build and optimize spatial queries. This session outlines the new geography data type to store geodetic spatial data and perform operations on it, use the new geometry data type to store planar spatial data and perform operations on it, take advantage of new spatial indexes for high performance queries, use the new spatial results tab to quickly and easily view spatial query results directly from within Management Studio, extend spatial data capabilities by building or integrating location-enabled applications through support for spatial standards and specifications and much more. Panel Discussion: Harness the power of Web – SEO and Technical Blogging Date: April 12, 2010 Time: 5:00pm-6:00pm Here you will learn lots of tricks and tips about SEO and Technical Blogging from various Industry Technical Blogging Experts. This event will surely be one of the most important Tech conventions of 2010. TechEd is going to be a very busy time for Tech developers and enthusiasts, since every evening there will be a fun session to attend. If you are interested in any of the above topics for every session, I suggest that you visit each of them as you will learn so many things about the topic to be discussed. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: MVP, Pinal Dave, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Author Visit, SQLAuthority News, T SQL, Technology Tagged: TechEd, TechEdIn

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  • Oracle Announces Oracle Exadata X3 Database In-Memory Machine

    - by jgelhaus
    Fourth Generation Exadata X3 Systems are Ideal for High-End OLTP, Large Data Warehouses, and Database Clouds; Eighth-Rack Configuration Offers New Low-Cost Entry Point ORACLE OPENWORLD, SAN FRANCISCO – October 1, 2012 News Facts During his opening keynote address at Oracle OpenWorld, Oracle CEO, Larry Ellison announced the Oracle Exadata X3 Database In-Memory Machine - the latest generation of its Oracle Exadata Database Machines. The Oracle Exadata X3 Database In-Memory Machine is a key component of the Oracle Cloud. Oracle Exadata X3-2 Database In-Memory Machine and Oracle Exadata X3-8 Database In-Memory Machine can store up to hundreds of Terabytes of compressed user data in Flash and RAM memory, virtually eliminating the performance overhead of reads and writes to slow disk drives, making Exadata X3 systems the ideal database platforms for the varied and unpredictable workloads of cloud computing. In order to realize the highest performance at the lowest cost, the Oracle Exadata X3 Database In-Memory Machine implements a mass memory hierarchy that automatically moves all active data into Flash and RAM memory, while keeping less active data on low-cost disks. With a new Eighth-Rack configuration, the Oracle Exadata X3-2 Database In-Memory Machine delivers a cost-effective entry point for smaller workloads, testing, development and disaster recovery systems, and is a fully redundant system that can be used with mission critical applications. Next-Generation Technologies Deliver Dramatic Performance Improvements Oracle Exadata X3 Database In-Memory Machines use a combination of scale-out servers and storage, InfiniBand networking, smart storage, PCI Flash, smart memory caching, and Hybrid Columnar Compression to deliver extreme performance and availability for all Oracle Database Workloads. Oracle Exadata X3 Database In-Memory Machine systems leverage next-generation technologies to deliver significant performance enhancements, including: Four times the Flash memory capacity of the previous generation; with up to 40 percent faster response times and 100 GB/second data scan rates. Combined with Exadata’s unique Hybrid Columnar Compression capabilities, hundreds of Terabytes of user data can now be managed entirely within Flash; 20 times more capacity for database writes through updated Exadata Smart Flash Cache software. The new Exadata Smart Flash Cache software also runs on previous generation Exadata systems, increasing their capacity for writes tenfold; 33 percent more database CPU cores in the Oracle Exadata X3-2 Database In-Memory Machine, using the latest 8-core Intel® Xeon E5-2600 series of processors; Expanded 10Gb Ethernet connectivity to the data center in the Oracle Exadata X3-2 provides 40 10Gb network ports per rack for connecting users and moving data; Up to 30 percent reduction in power and cooling. Configured for Your Business, Available Today Oracle Exadata X3-2 Database In-Memory Machine systems are available in a Full-Rack, Half-Rack, Quarter-Rack, and the new low-cost Eighth-Rack configuration to satisfy the widest range of applications. Oracle Exadata X3-8 Database In-Memory Machine systems are available in a Full-Rack configuration, and both X3 systems enable multi-rack configurations for virtually unlimited scalability. Oracle Exadata X3-2 and X3-8 Database In-Memory Machines are fully compatible with prior Exadata generations and existing systems can also be upgraded with Oracle Exadata X3-2 servers. Oracle Exadata X3 Database In-Memory Machine systems can be used immediately with any application certified with Oracle Database 11g R2 and Oracle Real Application Clusters, including SAP, Oracle Fusion Applications, Oracle’s PeopleSoft, Oracle’s Siebel CRM, the Oracle E-Business Suite, and thousands of other applications. Supporting Quotes “Forward-looking enterprises are moving towards Cloud Computing architectures,” said Andrew Mendelsohn, senior vice president, Oracle Database Server Technologies. “Oracle Exadata’s unique ability to run any database application on a fully scale-out architecture using a combination of massive memory for extreme performance and low-cost disk for high capacity delivers the ideal solution for Cloud-based database deployments today.” Supporting Resources Oracle Press Release Oracle Exadata Database Machine Oracle Exadata X3-2 Database In-Memory Machine Oracle Exadata X3-8 Database In-Memory Machine Oracle Database 11g Follow Oracle Database via Blog, Facebook and Twitter Oracle OpenWorld 2012 Oracle OpenWorld 2012 Keynotes Like Oracle OpenWorld on Facebook Follow Oracle OpenWorld on Twitter Oracle OpenWorld Blog Oracle OpenWorld on LinkedIn Mark Hurd's keynote with Andy Mendelsohn and Juan Loaiza - - watch for the replay to be available soon at http://www.youtube.com/user/Oracle or http://www.oracle.com/openworld/live/on-demand/index.html

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  • Failling install Ralink RT5592 driver on Ubuntu 14.04 LTS

    - by atisou
    My problem concerns the installation of a wi-fi driver (RT5592) for my new wi-fi adapter (PCE-N53) on my newly built computer. Basically, I don't manage to get the driver installed and therefore I cannot get the wifi to work. I know I am not the only one having this issue this year, between RT5592 driver and Ubuntu 14.04 LTS, in one way or the other. Is there anybody who has ever been able to fix this problem? It does not look like on all the posts I have been through... Following an answer to a same problem as mine (I was getting the same error message as Christopher Kyle Horton of "incompatible types" etc), I have applied the instructions and done the editings in a script as suggested by Paul B. Unfortunately I still do get error/warnings message (a different one this time) at the end of the make and the wi-fi still does not work. Below is a snapshot of the end of the message: In file included from /home/username/Downloads/PCE-N53/Linux/DPO_GPL_RT5592STA_LinuxSTA_v2.6.0.0_20120326/include/os/rt_linux.h:31:0, from /home/username/Downloads/PCE-N53/Linux/DPO_GPL_RT5592STA_LinuxSTA_v2.6.0.0_20120326/include/rtmp_os.h:44, from /home/username/Downloads/PCE-N53/Linux/DPO_GPL_RT5592STA_LinuxSTA_v2.6.0.0_20120326/include/rtmp_comm.h:69, from /home/username/Downloads/PCE-N53/Linux/DPO_GPL_RT5592STA_LinuxSTA_v2.6.0.0_20120326/os/linux/../../os/linux/pci_main_dev.c:31: include/linux/module.h:88:32: error: ‘__mod_pci_device_table’ aliased to undefined symbol ‘rt2860_pci_tbl’ extern const struct gtype##_id __mod_##gtype##_table \ ^ include/linux/module.h:146:3: note: in expansion of macro ‘MODULE_GENERIC_TABLE’ MODULE_GENERIC_TABLE(type##_device,name) ^ /home/username/Downloads/PCE-N53/Linux/DPO_GPL_RT5592STA_LinuxSTA_v2.6.0.0_20120326/os/linux/../../os/linux/pci_main_dev.c:73:1: note: in expansion of macro ‘MODULE_DEVICE_TABLE’ MODULE_DEVICE_TABLE(pci, rt2860_pci_tbl); ^ cc1: some warnings being treated as errors make[2]: *** [/home/username/Downloads/PCE-N53/Linux/DPO_GPL_RT5592STA_LinuxSTA_v2.6.0.0_20120326/os/linux/../../os/linux/pci_main_dev.o] Error 1 make[1]: *** [_module_/home/username/Downloads/PCE-N53/Linux/DPO_GPL_RT5592STA_LinuxSTA_v2.6.0.0_20120326/os/linux] Error 2 make[1]: Leaving directory `/usr/src/linux-headers-3.13.0-32-generic' make: *** [LINUX] Error 2 The full pastebin data: paste.ubuntu.com/8088834/ It looks from the message that one would need to edit manually some of/other scripts in the driver package, as did Paul B suggest in one case. But I have no idea how to do that. Here is the driver package of the wifi adapter: www.asus.com/uk/Networking/PCEN53/HelpDesk_Download/ My system is as following: OS: ubuntu 14.04 LTS wi-fi card: Asus PCE-N53 motherboard: Asus KCMA-D8 processor: AMD Opteron 4228 HE kernel: 3.13.0-32-generic Following this info from chili555 in here, below are some extra info about my system: lspci -nn | grep 0280 gives 04:00.0 Network controller [0280]: Ralink corp. RT5592 PCI2 Wireless Network Adapater [1814:5592] and sudo apt-get install linux-headers-generic returns linux-headers-generic is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. If this is a kernel version (I have 3.13.0-32-generic) incompatibility issue with the driver as chilli555 suggests (the README file in the driver package says indeed it is compatible with kernel 2.6), how could one trick this around to make it work? that should be possible right? On ubuntu forums, the patches proposed dont work (leads the computer to freeze). Basically: is there anybody out there who has ever been able to make a PCE-N53 work on Ubuntu 14.04 LTS (kernel 3.13)? how shall I edit the driver package to make it work for my kernel?

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  • Linux-Containers — Part 1: Overview

    - by Lenz Grimmer
    "Containers" by Jean-Pierre Martineau (CC BY-NC-SA 2.0). Linux Containers (LXC) provide a means to isolate individual services or applications as well as of a complete Linux operating system from other services running on the same host. To accomplish this, each container gets its own directory structure, network devices, IP addresses and process table. The processes running in other containers or the host system are not visible from inside a container. Additionally, Linux Containers allow for fine granular control of resources like RAM, CPU or disk I/O. Generally speaking, Linux Containers use a completely different approach than "classicial" virtualization technologies like KVM or Xen (on which Oracle VM Server for x86 is based on). An application running inside a container will be executed directly on the operating system kernel of the host system, shielded from all other running processes in a sandbox-like environment. This allows a very direct and fair distribution of CPU and I/O-resources. Linux containers can offer the best possible performance and several possibilities for managing and sharing the resources available. Similar to Containers (or Zones) on Oracle Solaris or FreeBSD jails, the same kernel version runs on the host as well as in the containers; it is not possible to run different Linux kernel versions or other operating systems like Microsoft Windows or Oracle Solaris for x86 inside a container. However, it is possible to run different Linux distribution versions (e.g. Fedora Linux in a container on top of an Oracle Linux host), provided it supports the version of the Linux kernel that runs on the host. This approach has one caveat, though - if any of the containers causes a kernel crash, it will bring down all other containers (and the host system) as well. For example, Oracle's Unbreakable Enterprise Kernel Release 2 (2.6.39) is supported for both Oracle Linux 5 and 6. This makes it possible to run Oracle Linux 5 and 6 container instances on top of an Oracle Linux 6 system. Since Linux Containers are fully implemented on the OS level (the Linux kernel), they can be easily combined with other virtualization technologies. It's certainly possible to set up Linux containers within a virtualized Linux instance that runs inside Oracle VM Server for Oracle VM Virtualbox. Some use cases for Linux Containers include: Consolidation of multiple separate Linux systems on one server: instances of Linux systems that are not performance-critical or only see sporadic use (e.g. a fax or print server or intranet services) do not necessarily need a dedicated server for their operations. These can easily be consolidated to run inside containers on a single server, to preserve energy and rack space. Running multiple instances of an application in parallel, e.g. for different users or customers. Each user receives his "own" application instance, with a defined level of service/performance. This prevents that one user's application could hog the entire system and ensures, that each user only has access to his own data set. It also helps to save main memory — if multiple instances of a same process are running, the Linux kernel can share memory pages that are identical and unchanged across all application instances. This also applies to shared libraries that applications may use, they are generally held in memory once and mapped to multiple processes. Quickly creating sandbox environments for development and testing purposes: containers that have been created and configured once can be archived as templates and can be duplicated (cloned) instantly on demand. After finishing the activity, the clone can safely be discarded. This allows to provide repeatable software builds and test environments, because the system will always be reset to its initial state for each run. Linux Containers also boot significantly faster than "classic" virtual machines, which can save a lot of time when running frequent build or test runs on applications. Safe execution of an individual application: if an application running inside a container has been compromised because of a security vulnerability, the host system and other containers remain unaffected. The potential damage can be minimized, analyzed and resolved directly from the host system. Note: Linux Containers on Oracle Linux 6 with the Unbreakable Enterprise Kernel Release 2 (2.6.39) are still marked as Technology Preview - their use is only recommended for testing and evaluation purposes. The Open-Source project "Linux Containers" (LXC) is driving the development of the technology behind this, which is based on the "Control Groups" (CGroups) and "Name Spaces" functionality of the Linux kernel. Oracle is actively involved in the Linux Containers development and contributes patches to the upstream LXC code base. Control Groups provide means to manage and monitor the allocation of resources for individual processes or process groups. Among other things, you can restrict the maximum amount of memory, CPU cycles as well as the disk and network throughput (in MB/s or IOP/s) that are available for an application. Name Spaces help to isolate process groups from each other, e.g. the visibility of other running processes or the exclusive access to a network device. It's also possible to restrict a process group's access and visibility of the entire file system hierarchy (similar to a classic "chroot" environment). CGroups and Name Spaces provide the foundation on which Linux containers are based on, but they can actually be used independently as well. A more detailed description of how Linux Containers can be created and managed on Oracle Linux will be explained in the second part of this article. Additional links related to Linux Containers: OTN Article: The Role of Oracle Solaris Zones and Linux Containers in a Virtualization Strategy Linux Containers on Wikipedia - Lenz Grimmer Follow me on: Personal Blog | Facebook | Twitter | Linux Blog |

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  • SQLAuthority News – Author Visit – SQL Server 2008 R2 Launch

    - by pinaldave
    June 11, 2010 was a wonderful day because I attended the very first SQL Server 2008 R2 Launch event held by Microsoft at Mumbai. I traveled to Mumbai from my home town, Ahmedabad. The event was located at one of the best hotels in Mumbai,”The Leela”. SQL Server R2 Launch was an evening event that had a few interesting talks. SQL PASS is associated with this event as one of the partners and its goal is to increase the awareness of the Community about SQL Server. I met many interesting people and had a great networking opportunity at the event. This event was kicked off with an awesome laser show and a “Welcome” video, which was followed by a Microsoft Executive session wherein there were several interesting demo. The very first demo was about Powerpivot. I knew beforehand that there will be Powerpivot demos because it is a very popular subject; however, I was really hoping to see other interesting demos from SQL Server 2008 R2. And believe me; I was happier to see the later demos. There were demos from SQL Server Utility Control Point, as well an integration of Bing Map with Reporting Servers. I really enjoyed the interactive and informative session by Shivaram Venkatesh. He had excellent presentation skills as well as ample technical knowledge to keep the audience attentive. I really liked his presentations skills wherein he did not read the whole slide deck; rather, he picked one point and using that point he told the story of the whole slide deck. I also enjoyed my conversation with Afaq Choonawala, who is one of the “gem guys” in Microsoft. I also want to acknowledge Ashwin Kini and Mohit Panchal for their excellent support to this event. Mumbai IT Pro is a user group which you can really count on for any kind of help. After excellent demos and a vibrant start of the event, all the audience was jazzed up. There were two vendors’ sessions right after the first session. Intel had 15 minutes to present; however, Intel’s representative, who had good knowledge of the subject, had nearly 30+ slides in his presentation, so he had to rush a bit to cover the whole slide deck. Intel presentations were followed up by another vendor presentation from NetApp. I have previously heard about this tool. After I saw the demo which did not work the first time the Net App presenter demonstrated it, I started to have a doubt on this product. I personally went to clarify my doubt to the demo booth after the presentation was over, but I realize the NetApp presenter or booth owner had absolutely a POOR KNOWLEDGE of SQL Server and even of their own NetApp product. The NetApp people tried to misguide us and when we argued, they started to say different things against what they said earlier. At one point in their presentation, they claimed their application does something very fast, which did not really happen in front of all the audience. They blamed SQL Server R2 DBCC CHECKDB command for their product’s failed demonstration. I know that NetApp has many great products; however, this one was not conveyed clearly and even created a negative impression to all of us. Well, let us not judge the potential, fun, education and enigma of the launch event through a small glitch. This event was jam-packed and extremely well-received by everybody who attended it. As what I said, average demos and good presentations by MS folks were really something to cheer about. Any launch event is considered as successful if it achieves its goal to excite users with its cutting edge technology; just like this event that left a very deep impression on me. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Author Visit, SQLAuthority News, T SQL, Technology Tagged: PASS, SQLPASS

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  • SQL Developer Blitz at ODTUG Kscope12

    - by thatjeffsmith
    Oracle Development Tools User Group (ODTUG) puts on an outstanding event, and I enjoy that the content comes FIRST. Yes, the after-event parties and entertainment are first class, but I look forward most to sitting in on some excellent sessions. For Kscope12 one would expect Oracle to have a large presence, and you would be absolutely correct! The APEX team will be there in full force, and we’ll have sessions on JDeveloper, ADF, and .NET. But what I want to talk about today is our awesome line-up of coverage for Oracle SQL Developer (Surprise!) DB and Developer’s Toolbox Symposium Kris Rice or @krisrice, Product Development Manager for SQL Developer, will speak at 10AM Sunday about SQL Developer Data Modeler. Our free data modeling solution allows one to reverse engineer a data dictionary to a model, modify it, and create a script of the changes. Collaboration is an important part of any development team; with built-in subversion support, the modeler makes collaboration easy, not just possible. After the morning break, I’ll be talking about SQL Developer’s PL/SQL support. From creating your code, to debugging, tuning, testing, and documenting PL/SQL – SQL Developer fits the bill. Since I have a full hour, I should have time to do a little riff on using source control to version and manage your revisions too! At 3:15 Jagan Athreya will talk about the new integration between SQL Developer and Enterprise Manager Cloud Control 12c. Enabling developers to define changes in SQLDeveloper and allowing DBAs to promote these changes to Test and Production via Enterprise Manager will reduce errors, accelerate productivity, and help eliminate unplanned downtime. Get your SQL Developer groove on at ODTUG Kscope12! Presentations SQL Developer Tips and Tricks Monday June 25, Session 5, 4:15 pm – 5:15 pm I’ll take you through my favorite keyboard shortcuts, top 10 preferences every user should tweak, and spotlight features that the average user probably hasn’t discovered yet. My goal for this session is for everyone to take 1-2 tips they can implement immediately to save mucho time. I enjoy interacting with the audience so no two versions of this presentation are the same. Oracle SQL Developer and Data Modeler New Features When: Tuesday June 26, Session 6, 8:30 am – 9:30 am Ashley Chen, my PM-partner-in-crime, will be covering all the new features from our two latest updates. So if you’re new to SQL Developer, or you’ve been using an older version, stop by and see what new toys you have to play with. I also have a bet with Ashley that she will have more attendees than me, so be sure to show up so I can collect. Debugging PL/SQL With SQL Developer When: Wednesday June 27, Session 16, 3:00 pm – 4:00 pm Me again – sorry. This time I have an entire hour to JUST talk about PL/SQL and debugging! Should you use a watch with a break condition, or a breakpoint with a passcount? How does external debugging with a Perl script work? Can I just debug an anonymous PL/SQL block. So if debugging to you is just a DBMS_OUTPUT.PUT_LINE() call, stop by and see how our IDE can help you take things to the next level! Or is that level++? Hands-on-Training SQL Developer Soup to Nuts When: Tuesday, 8:00 AM – 9:30 AM If you learn by doing, this is the session for you. Bring your own laptop or use one of the lab machines. We’ll give you a VirtualBox OEL image running 11gR2 EE Database with all the fixin’s (that’s Southern speak for Partitioning, Advanced Compression, Tuning & Diagnostic Packs, etc), TimesTen, APEX and much more. All you have to do is login and run through our lab exercises. You can start with a model and work your way up to debugging and testing your own appliction, or you can pick and choose your lessons to suit your needs. We’ll have people on hand to help you out and answer your questions. Booth Hours We’ll be in the vendor area and have our very own ‘demo pod’ for SQL Developer. Between Kris, Ashley, and I we should be able to answer your questions or show you how to ‘do that thing’ in the tool. Or just stop by and say hello! We’ll be around the following hours’ish: Sunday, June 24, 2012 6:00 PM – 8:00 PM Monday, June 25, 2012 9:00 AM – 4:30 PM Tuesday, June 26, 2012 9:30 AM – 3:30 PM Wednesday, June 27, 2012 10:15 AM – 2:00 PM No Excuses – If You Have Questions, This is Your Chance to Get Your Answers! We’re doing just about everything outside of a scavenger hunt to bring information and value to our users. Let us know what you like, what you don’t like, and we’ll do our best to do more of the former and less of the latter!

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  • Oracle Open World 2012: SQL Developer Recap

    - by thatjeffsmith
    Last week was the ‘big show’ in San Francisco. I was very happy to meet many of you in person. And many of you had questions – lots of questions! We had full or overflowing rooms for our sessions and hands-on-labs. The SQL Developer ‘booths’ were also slammed several times. So exciting to see so many of YOU excited about SQL Developer. It’s very cool to hear the stories of our tools saving you and your organizations so much time (and money!) Instead of doing a Day 0 – Day 9 recap, I thought I’d share with you the questions that I heard more than once. And just for giggles, I’ll throw in some answers as well So in no particular order… What’s the difference between Oracle SQL Developer & Oracle SQL Developer Data Modeler? Mathematically speaking – two words. But as far as the actual modeling features go, there’s no difference between the two applications. The same ‘code’ or features as it pertains to data modeling and design are in both tools. However, in SQL Developer you have all of the OTHER features fighting for real estate in the UI. So I have a general rule of thumb – if you spend MOST of your time in the database, use SQL Developer. And if you spend most of your time in the data model, run the separate and dedicated program, Oracle SQL Developer Data Modeler. Here’s a couple of screenshots to drive home the UI point: Oracle SQL Developer Oracle SQL Developer Data Modeler running INSIDE of SQL Developer. Notice how the Modeler menu items fold under the file menu? Oracle SQL Developer Data Modeler Easier to navigate and manipulate your models with the stand alone modeler. Just no worksheet to run your ad-hoc queries, etc. Don’t forget you can disable the Data Modeler inside of SQL Developer via the Extensions preference page. How can I model my table partitions? Partitioning is defined via the Physical model. So after you have finished your relational model, you need to generate a physical model. Oracle SQL Developer Data Modeler Physical Model and Partitioning Open the properties for your physical model table. Enable the ‘partitioned’ property. Once you do so, the ‘Partitioning’ page will activate. Lots and lots of partitioning support and options here But what about Interval Partitioning? An extension of range partitioning in 11gR2, we don’t currently support this partitioning scheme in SQL Developer. But we’re working on it! Can SQL Developer ignore column order when comparing models? Yes! After you start a model compare, one of your options is to disregard the order of an attribute or column definition. Tell SQL Developer you don’t care when your column shows up, just as long as it DOES show up. Wow, you got a lot of questions around modeling! Is that normal? Yes! While we appreciate that many folks inherit their applications and associated designs, new applications are being ‘born’ every day. Since both of our tools are free for anyone to design their new Oracle applications with, we attract a fair amount of attention I want to do a Hands On Lab. How do I get your software and instructional guides? Go here. Download VirtualBox. Then download the VB image. Import the appliance. Start it. Connect oracle/oracle on the OEL VM. Click on ‘Start Here’ in the desktop. Follow the instructions. If you need help, ask away! You went too fast in your Tips & Tricks session. Do you have cliff notes? Yes! And you’re SO close to finding them! Just go to my SQL Developer resources page. All of my tips are documented on this blog somewhere. I’ve indexed the most popular ones on the resource page. You can use the Search dialog on the right to find the rest. Or just send me a comment or question, and I’ll do my best to answer them as they come in.

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  • Travelling MVP #1: Visit to SharePoint User Group Finland

    - by DigiMortal
    My first self organized trip this autumn was visit to SharePoint User Group Finland community evening. As active community leaders who make things like these possible they are worth mentioning and on spug.fi side there was Jussi Roine the one who invited me. Here is my short review about my trip to Helsinki. User group meeting As Helsinki is near Tallinn I went there using ship. It was easy to get from sea port to venue and I had also some minutes of time to visit academic book store. Community evening was held on the ground floor of one city center hotel and room was conveniently located near hotel bar and restaurant. Here is the meeting schedule: Welcome (Jussi Roine) OpenText application archiving and governance for SharePoint (Bernd Hennicke, OpenText) Using advanced C# features in SharePoint development (Alexey Sadomov, NED Consulting) Optimizing public-facing internet sites for SharePoint (Gunnar Peipman) After meeting, of course, local dudes doesn’t walk away but continue with some beers and discussion. Sessions After welcome words by Jussi there was session by Bernd Hennicke who spoke about OpenText. His session covered OpenText history and current moment. After this introduction he spoke about OpenText products for SharePoint and gave the audience good overview about where their SharePoint extensions fit in big picture. I usually don’t like those vendors sessions but this one was good. I mean vendor dudes were not aggressively selling something. They were way different – kind people who introduced their stuff and later answered questions. They acted like good guests. Second speaker was Alexey Sadomov who is working on SharePoint development projects. He introduced some ways how to get over some limitations of SharePoint. I don’t go here deeply with his session but it’s worth to mention that this session was strong one. It is not rear case when developers have to make nasty hacks to SharePoint. I mean really nasty hacks. Often these hacks are long blocks of code that uses terrible techniques to achieve the result. Alexey introduced some very much civilized ways about how to apply hacks. Alex Sadomov, SharePoint MVP, speaking about SharePoint coding tips and tricks on C# I spoke about how I optimized caching of Estonian Microsoft community portal that runs on SharePoint Server and that uses publishing infrastructure. I made no actual demos on SharePoint because I wanted to focus on optimizing process and share some experiences about how to get caches optimized and how to measure caches. Networking After official part there was time to talk and discuss with people. Finns are cool – they have beers and they are glad. It was not big community event but people were like one good family. Developers there work often for big companies and it was very interesting to me to hear about their experiences with SharePoint. One thing was a little bit surprising for me – SharePoint guys in Finland are talking actively also about Office 365 and online SharePoint. It doesn’t happen often here in Estonia. I had to leave a little bit 21:00 to get to my ship back to Tallinn. I am sure spug.fi dudes continued nice evening and they had at least same good time as I did. Do I want to go back to Finland and meet these guys again? Yes, sure, let’s do it again! :)

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  • Last week I was presented with a Microsoft MVP award in Virtual Machines – time to thank all who hel

    - by Liam Westley
    MVP in Virtual Machines Last week, on 1st April, I received an e-mail from Microsoft letting me know that I had been presented with a 2010 Microsoft® MVP Award for outstanding contributions in Virtual Machine technical communities during the past year.   It was an honour to be nominated, and is a great reflection on the vibrancy of the UK user group community which made this possible. Virtualisation for developers, not just IT Pros I consider it a special honour as my expertise in virtualisation is as a software developer utilising virtual machines to aid my software development, rather than an IT Pro who manages data centre and network infrastructure.  I’ve been on a minor mission over the past few years to enthuse developers in a topic usually seen as only for network admins, but which can make their life a whole lot easier once understood properly. Continuous learning is fun In 1676, the scientist Isaac Newton, in a letter to Robert Hooke used the phrase (http://www.phrases.org.uk/meanings/268025.html) ‘If I have seen a little further it is by standing on the shoulders of Giants’ I’m a nuclear physicist by education, so I am more than comfortable that any knowledge I have is based on the work of others.  Although far from a science, software development and IT is equally built upon the work of others. It’s one of the reasons I despise software patents. So in that sense this MVP award is a result of all the great minds that have provided virtualisation solutions for me to talk about.  I hope that I have always acknowledged those whose work I have used when blogging or giving presentations, and that I have executed my responsibility to share any knowledge gained as widely as possible. Thanks to all those who helped – a big thanks to the UK user group community I reckon this journey started in 2003 when I started attending a user group called the London .Net Users Group (http://www.dnug.org.uk) started by a nice chap called Ian Cooper. The great thing about Ian was that he always encouraged non professional speakers to take the stage at the user group, and my first ever presentation was on 30th September 2003; SQL Server CE 2.0 and the.NET Compact Framework. In 2005 Ian Cooper was on the committee for the first DeveloperDeveloperDeveloper! day, the free community conference held at Microsoft’s UK HQ in Thames Valley park in Reading.  He encouraged me to take part and so on 14th May 2005 I presented a talk previously given to the London .Net User Group on Simplifying access to multiple DB providers in .NET.  From that point on I definitely had the bug; presenting at DDD2, DDD3, groking at DDD4 and SQLBits I and after a break, DDD7, DDD Scotland and DDD8.  What definitely made me keen was the encouragement and infectious enthusiasm of some of the other DDD organisers; Craig Murphy, Barry Dorrans, Phil Winstanley and Colin Mackay. During the first few DDD events I met the Dave McMahon and Richard Costall from NxtGenUG who made it easy to start presenting at their user groups.  Along the way I’ve met a load of great user group organisers; Guy Smith-Ferrier of the .Net Developer Network, Jimmy Skowronski of GL.Net and the double act of Ray Booysen and Gavin Osborn behind what was Vista Squad and is now Edge UG. Final thanks to those who suggested virtualisation as a topic ... Final thanks have to go the people who inspired me to create my Virtualisation for Developers talk.  Toby Henderson (@holytshirt) ensured I took notice of Sun’s VirtualBox, Peter Ibbotson for being a fine sounding board at the Kew Railway over quite a few Adnam’s Broadside and to Guy Smith-Ferrier for allowing his user group to be the guinea pigs for the talk before it was seen at DDD7.  Thanks to all of you I now know much more about virtualisation than I would have thought possible and it continues to be great fun. Conclusion If this was an academy award acceptance speech I would have been cut off after the first few paragraphs, so well done if you made it this far.  I’ll be doing my best to do justice to the MVP award and the UK community.  I’m fortunate in having a new employer who considers presenting at user groups as a good thing, so don’t expect me to stop any time soon. If you’ve never seen me in action, then you can view the original DDD7 Virtualisation for Developers presentation (filmed by the Microsoft Channel 9 team) as part of the full DDD7 video list here, http://www.craigmurphy.com/blog/?p=1591.  Also thanks to Craig Murphy’s fine video work you can also view my latest DDD8 presentation on Commercial Software Development, here, http://vimeo.com/9216563 P.S. If I’ve missed anyone out, do feel free to lambast me in comments, it’s your duty.

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  • Best WordPress Shopping Cart & Ecommerce Plugins

    - by Edward
    A versatile WordPress Shopping Cart plugin can help you create a feature-rich online store on your WordPress-powered website or blog. Some are so advanced that you can get your store up and running in minutes. Some plugins allow you to take ecommerce to a next level with their high end customization tools. Here is a list of best WP shopping cart plugins available: Cart66 One of the best WordPress plugin with lots of features, great quality and ease of use. It accepts few more payment getways such as PayPal Website Payments Standard, PayPal Website Payments Professional, PayPal Express Checkout, eProcessing Network etc. It has flexible design options, recurring payments for subscriptions, memberships, and payment plans, Easy PCI Compliance – Safe and Secure. It is fast and efficient, one can sell digital and physical products and support is good. Price: Standard $49 & Professional $99 Details Download StorePress StorePress is a WordPress theme, which is fully coded. It comes with scripts that can change a WordPress blog into a veritable e-commerce virtual store. With this great premium WordPress theme, one can start affiliate stores, or promote affiliate products. Price: Single $59.99 & Developer License $119.99 Details Download WordPress eStore Plugin This shopping cart plugin comes with easy checkout, ease of design and use, automatic instant digital product delivery, Next Gen gallery integration, autoresponder integration etc. It is a lightweight shopping cart and allows multi site license. This plugin offers an amazingly comprehensive toolkit that will ensure your online shop is almost just plug-and-play. Price: $49.99 Details Download Shoppers Press Shoppers press is a premium cart for Word Press that comes with 20+ to choose from and 20+ built in payment gateways. It features one-click setups, personalized user accounts, easy management tools, detailed sales tracking, promotional options, a variety of product import tools, and many more features Price:$79 Details Download WordPress Shopping Cart plugin The WordPress Shopping Cart plugin by Tribulant quickly and seamlessly integrates an online shop with a fully functional shopping cart interface into any WordPress website. It has easy to use interface, which enables set up of multiple products and categorize and organizing them into multiple product categories. It also has many more attractive features. Price: $49.99 Details Download WP e-commerce WP e-commerce is a free full-featured shopping cart plugin for WordPress. It is a full featured shopping cart and boasts of easy checkout. It offers a wide range of features including SSL compatibility, customization and merchandising, integrated payment processing solutions including manual payment, Google Checkout and PayPal Payments, and email marketing. It is wordpress and social networking integrated. It is customizable by use of PHP template tag, wordpress shortcode and widgets. Details Download YAK for WordPress YAK is an open source shopping cart plugin for WordPress. It associates products with weblog entries (in other words, posts), so the post ID also becomes the product code. It supports both pages and posts as products, handles different types of product through categories. YAK supports downloadable products, so any e-books, plugins, or zip files you’re marketing can be easily purchased and dowloaded. Details Download Market Press It is another shopping cart full of many features. It offers following features such as assign categories and tags to products to make them easy to find, stock tracking with alerts, order management/alerts, fully customizable email messages, full support for most major currencies, fully customizable store urls/slugs, customers can checkout without being a site user etc. Expensive, but good option for those who can afford it. Price: $17.42/month Details Download Shopp It is an excellent shopping cart plugin for Word Press. This plugin is extremely easy to install and use. It has a cleaner interface. The customer support is good. Use can easily customize the look of the cart by using its amazing features. Price: $55 Details Download Related posts:8 PHP Shopping Cart Software for Reliable Ecommerce Solution Shopping Cart SEO 8 Free Open Source Shopping Carts

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  • So No TECH job so far.

    - by Ratman21
    O I found some temp work for the US Census and I have managed to keep the house (so far) but, it looks like I/we are going to have to do a short sale and the temp job will be ending soon.   On top of that it looks like the unemployment fund for me is drying up. I will have about one month left after the Census job is done. I am now down to Appling for work at the KFC.   This is type a work I started with, before I was a tech geek and really I didn’t think I would be doing this kind of work in my later years but, I have a wife and kid. So I got to suck it up and do it.   Oh and here is my new resume…go ahead I know you want to tare it up. I really don’t care any more.   Scott L. Newman 45219 Dutton Way, Callahan, FL32011 H: (904)879-4880 C: (352)356-0945 E: [email protected] Web:  http://beingscottnewman.webs.com/                                                       ______                                                                                 OBJECTIVE To obtain a Network or Technical support position     KEYWORD SUMMARY CompTIA A+, Network+, and Security+ Certified., Network Operation, Technical Support, Client/Vendor Relations, Networking/Administration, Cisco Routers/Switches, Helpdesk, Microsoft Office Suite, Website Design/Dev./Management, Frame Relay, ISDN, Windows NT/98/XP, Visio, Inventory Management, CICS, Programming, COBOL IV, Assembler, RPG   QUALIFICATIONS SUMMARY Twenty years’ experience in computer operations, technical support, and technical writing. Also have two and half years’ experience in internet / intranet operations.   PROFESSIONAL EXPERIENCE October 2009 – Present*   Volunteer Web site and PC technician – Part time       True Faith Christian Fellowship Church – Callahan, FL, Project: Create and maintain web site for Church to give it a worldwide exposure Aug 2008 – September 2009:* Volunteer Church sound and video technician – Part time      Thomas Creek Baptist Church – Callahan, FL   *Note Jobs were for the learning and/or keeping updated on skills, while looking for a tech job and training for new skills.   February 2005 to October 2008: Client Server Dev/Analyst I, Fidelity National Information Services, Jacksonville, FL (FNIS acquired Certegy in 2005 and out of 20 personal, was one of three kept on.) August 2003 to February 2005: Senior NetOps Operator, Certegy, St.Pete, Fl. (August 2003, Certegy terminated contract with EDS and out of 40 personal, was one of six kept on.) Projects: Creation and update of listing and placement for all raised floor equipment at St.Pete site. Listing was made up of, floor plan of the raised floor and equipment racks diagrams showing the placement of all devices using Visio. This was cross-referenced with an inventory excel document showing what dept was responsible for each device. Sole creator of Network operation and Server Operation procedures guide (NetOps Guide).  Expertise: Resolving circuit and/or router issues or assist circuit carrier in resolving issue from the company Network Operation Center (NOC). As well as resolving application problems or assist application support in resolution of it.     July 1999 to August 2003: Senior NetOps Operator,EDS (Certegy Account), St.Pete, FL Same expertise and on going projects as listed above for FNIS/Certegy. (Equifax outsourced the NetOps dept. to EDS in 1999)         January 1991 to July 1999: NetOps/Tandem Operator, Equifax, St.Pete & Tampa, FL Same as all of the above for FNIS/Certegy/EDS except for circuit and router issues   EDUCATION ? New Horizons Computer Learning Center, Jacksonville, Florida - CompTIA A+, Security+, and     Network+ Certified.                        Currently working on CCNA Certification 07/30/10 ? Mott Community College, Flint, Michigan – Associates Degree - Data Processing and General Education ? Currently studying Japanese

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  • Oracle Database 12 c Training and Certification: What’s in it for Me?

    - by KJones
    Oracle Database 12c has officially launched! Through Oracle University, our expert instructors can introduce you to the features and functions of this new Oracle Database 12c product. Through training courses and certification exam prep seminars, you can build up your database knowledge and apply this knowledge to advance your career. Already an Oracle Database Expert? Why Oracle Database 12c Training is still a Good Idea Oracle is the industry leader for database technology and takes the release of new products very seriously. We continue to listen to customer needs and add features and functionality to address those needs. Oracle Database 12c is no exception. The following areas have been greatly enhanced and should be considered for your additional training or certification: • Database for Cloud Computing • Compression and Information Lifecycle Management (ILM) • Improved Performance & Scalability • Extreme Availability • Security Defense in Depth • Manageability Oracle Certified Database Administrators Reap Career Rewards Becoming an expert user of database technology through Oracle University's certification program widens your skill set to demonstrate your expertise implementing the most advanced database technology available. By doing so, you'll make yourself a more marketable employee and candidate in the job market.  Reasons to Become an Oracle Certified Database Administrator of Oracle Database 12c: • The new Oracle Database 12c certifications emphasize more advanced skills that align with industry standards, resulting in an even more valuable credential for customers and partners. • The Oracle Certified Associate (OCA) for Oracle Database 12c centers upon certification objectives that measure IT professionals' day-to-day skills, along with your ability to manage challenges. • Building upon all of the competencies incorporated into Oracle's Database 12c OCA certification, the Oracle Certified Professional (OCP) for Oracle Database 12c certification includes advanced knowledge and skills required of top-performing database administrators. • The Oracle Certified Master (OCM) for Oracle Database 12c - a very challenging and elite top-level certification - certifies the most highly skilled and experienced database experts. • Oracle offers 12c upgrade paths for existing Oracle Certified Professionals (OCP) and Oracle Certified Masters (OCM). Database 12c Training and Certification: Built with Your Input When creating Oracle Database 12c training courses and certifications, we wanted to know which tasks are most important in a DBA's day-to-day work. Instead of assuming what those tasks might be, we decided to develop a job task analysis survey for DBAs. The response rate from DBAs from around the world was overwhelming! The survey focused on the following key database areas: • DBA Core Essentials • Database Storage • High Availability • Scalability • Networking • Security • Very Large Database Administration • Distributed Databases After conducting this survey, we took this specific feedback and used it to help mold the new Oracle Database 12c training and certification curriculum. The benefit to you? You now have access to Oracle Database 12c courses and certification exams that were created with your specific on-the-job tasks in mind. Explore Oracle Database 12c Training & Certification Today Investing in Oracle Database 12c training courses and certifications will help you develop a great deal of knowledge, experience and expertise. Explore our portfolio of offerings to determine which skills you need as a DBA to get up-to-speed on Oracle Database 12c technology. Questions or comments about the new Oracle Database 12c offerings? Let us know in the comments below. - Diana Gray, Principle Curriculum Product Manager and Raza Siddiqui, Senior Principle Curriculum Product Manager

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