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• Advise about performance for local or remote SQL Server?

  - by TruMan1

  I currently have my web server and SQL Express / MySQL server on the same server. It is on a VPS. I have been having problems with my hosting so I am thinking of separating the web and db server into 2 VPS servers. Does anyone recommend this? I am worried that changing my setup from a local DB server to a remote one will degrade performance heavily. They will not be on the same network, but will reference each other via an IP address. Anything I should be aware of?

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• WebCenter Customer Advisory Board meetings kick off Oracle Open World 2012!

  - by Lance711

  Welcome to OpenWorld! OpenWorld 2012 got underway today with a series of meetings with the members of the WebCenter Customer Advisory Board. Led by the WebCenter Product Management team, these meetings are a great way for the product team and customers to directly interact and discuss real-life business challenges, product details and to discuss upcoming features and functionality. This year, board members participated in discussions around live demos around product enhancements that will be featured throughout the coming week. Highlights included a variety of new mobile and social solutions, a great new user interface for WebCenter Content plus new Portal and Sites functionality that makes the experience for the everyday user a lot more pleasant. The day kicked off with Roel Stalman, VP of Product Management, giving a detailed overview of what’s new in WebCenter. Given all the improvements to discuss, this session went over 2 hours! Roel showcased the brand new UI for Content, Portal and Sites. He also gave live demos of the new mobile apps for WebCenter Content, Portal and the Oracle Social Network.  The attendees then broke into sub-groups in order to deep-dive with Product Management for the Portal, Sites, and Content product areas on specific functionality and application integrations. If you are here in San Francisco this week for OpenWorld, I definitely recommend stopping by the WebCenter area in the Moscone West Exhibition Hall to see some of this new functionality for yourself. And be sure to check out the WebCenter sessions throughout the week as those give us a chance to discuss direction and strategy, answer your questions and get your feedback and ideas. For those of you could not make it to OpenWorld this year, we miss you! You can stay in touch with what is happening via this blog and by following #oow and #webcenter on Twitter. Additionally, we will be rolling out details on upcoming products and release info over the coming months via this blog and web seminars. Stay tuned!

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• Implications of allowing Windows clients to use NTLMv1?

  - by Boden

  I have a web application that I'd like to authenticate to using pass-through NTLM for SSO. There is a problem, however, in that NTLMv2 apparently will not work in this scenario (without the application storing an identical password hash). I enabled NTLMv1 on one client machine (Vista) using its local group policy: Computer-Windows Settings-Security Settings-Network Security: LAN Manager authentication level. I changed it to Send LM & NTLM - use NTLMv2 session security if negotiated. This worked, and I'm able to login to the web application using NTLM. Now this application would be used by all of my client machines... so I'm wondering what the security risks are if I was push this policy out to all of them (not to the domain controller itself though)?

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• What are some arguments AGAINST using EntityFramework?

  - by Rachel

  The application I am currently building has been using Stored procedures and hand-crafted class models to represent database objects. Some people have suggested using Entity Framework and I am considering switching to that since I am not that far into the project. My problem is, I feel the people arguing for EF are only telling me the good side of things, not the bad side :) My main concerns are: We want Client-Side validation using DataAnnotations, and it sounds like I have to create the client-side models anyways so I am not sure that EF would save that much coding time We would like to keep the classes as small as possible when going over the network, and I have read that using EF often includes extra data that is not needed We have a complex database layer which crosses multiple databases, and I am not sure EF can handle this. We have one Common database with things like Users, StatusCodes, Types, etc and multiple instances of our main databases for different instances of the application. SELECT queries can and will query across all instances of the databases, however users can only modify objects that are in the database they are currently working on. They can switch databases without reloading the application. Object modes are very complex and there are often quite a few joins involved Arguments for EF are: Concurrency. I wouldn't have to code in checks to see if the record was updated before each save Code Generation. EF can generate partial class models and POCOs for me, however I am not positive this would really save me that much time since I think we would still need to create the client-side models for validation and some custom parsing methods. Speed of development since we wouldn't need to create the CRUD stored procedures for every database object Our current architecture consists of a WPF Service which handles database calls via parameterized Stored Procedures, POCO objects that go to/from the WCF service and the WPF client, and the WPF client itself which transforms POCOs into class Models for the purpose of Validation and DataBinding.

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• How to use auto-discovery with iDRAC Enterprise?

  - by jwiz

  All I want to do is: have "auto discovery" enabled on my iDRAC enterprise at the factory rack the server, cable iDRAC to dhcp-enabled management network have the iDRAC DHCP, find the "Provisioning Server", and get updated with login credentials (for us to use with racadm, idrac webui, etc.) I don't need to do any configuring of the system, install OS, or anything else. I just want idrac to dhcp out of the box, and end up with an account that can be used to login. All the docs I can find on Dell's site refer to a "Provisioning Server", but I honestly can't tell if they have some reference product, or if they only have software that "integrates" with other vendor's existing management systems. I'd be happy to set up whatever is needed, I just can't find something that explicitly describes the process (only references to the fact that it is supported).

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• What metric captures why my OSX machine is so slow during XCode indexing

  - by Ben Flynn

  My entire machine OSX Lion machine slows down while XCode 4.4 is indexing. The CPU is less than 10% busy, I've got over 500 MB free memory, plenty of disk space, disk IO rate is not high, network activity is not high. Indexing just a few files can take minutes and builds are extremely slow. While this is going on, even loading a new web page in Chrome can be slow. Knowing how to fix it would be great, but more fundamentally how can I measure what is actually going slowly? What metrics should I be looking at? Nothing in Activity Monitor, iostat, top, or sar betray anything about what's going on to me. Even getting a man page is interminable.

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• Deploying war files in tomcat6

  - by user3215

  I am using tomcat5.5 for a long on ubuntu servers 8.10 and 9.10 and '/usr/share/tomcat/webapps/' is the path where I place my .war files and access them on the browser over network. On a sytem I've installed tomcat6 and I'm failing to find that where do I place my .war file of tomcat6's webapps. I checked deploying war under /var/lib/tomcat6/webapps/ and the war file is extracted and I think this should be the location but I could not access the page when I tried http://serverip:8080/myapp. I could access the default page properly when I navigate to http://serverip:8080. The same war file is working fine on tomcat servers which were not installed from apt repository. Log Messages: INFO: Stopping Coyote HTTP/1.1 on http-8080 2 Dec, 2010 10:06:29 AM org.apache.coyote.http11.Http11Protocol init INFO: Initializing Coyote HTTP/1.1 on http-8080 2 Dec, 2010 10:06:29 AM org.apache.catalina.startup.Catalina load INFO: Initialization processed in 523 ms 2 Dec, 2010 10:06:29 AM org.apache.catalina.core.StandardService start INFO: Starting service Catalina 2 Dec, 2010 10:06:29 AM org.apache.catalina.core.StandardEngine start INFO: Starting Servlet Engine: Apache Tomcat/6.0.20 2 Dec, 2010 10:06:30 AM org.apache.catalina.startup.HostConfig deployWAR INFO: Deploying web application archive myapp.war 2 Dec, 2010 10:06:32 AM org.apache.catalina.core.StandardContext start SEVERE: Error listenerStart 2 Dec, 2010 10:06:32 AM org.apache.catalina.core.StandardContext start SEVERE: Context [/myapp] startup failed due to previous errors 2 Dec, 2010 10:06:32 AM org.apache.coyote.http11.Http11Protocol start INFO: Starting Coyote HTTP/1.1 on http-8080 2 Dec, 2010 10:06:32 AM org.apache.catalina.startup.Catalina start INFO: Server startup in 3110 ms 2 Dec, 2010 10:06:39 AM org.apache.catalina.core.StandardContext start SEVERE: Error listenerStart 2 Dec, 2010 10:06:39 AM org.apache.catalina.core.StandardContext start SEVERE: Context [/myapp] startup failed due to previous error Any help?

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• Dropbox alternative with local sync support?

  - by srid

  I am currently using Dropbox. Just decided to sync my huge (about 5 GB) iTunes Library (music collection) in Dropbox. For that I must subscribe to their paid account. But before I do so, I'd like evaluate the alternatives. Is there an alternative that does this? Local LAN sync (eg: sync my huge music collection across computers in local network without uploading/downloading them to internet) The following would be nice (but not required): Native android client - so music will be made available in the Android music app / SDHC card Selective sync: sync particular folders / exclude certain folders on certain computers .. eg: excluding porn folder on work computers ;-) Just like Dropbox, it MUST work on 64-bit Windows, Linux and Mac. Know of any? (I am currently evaluating Spideroak. Boy, was it so complicated to use?)

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• Xperia handset - cannot send files using bluetooth

  - by Sandeepan Nath

  My friend has a Sony Ericsson Xperia (most probably X8) handset which is an Android based smartphone. He is not able to send files through bluetooth but able to receive. I don't exactly remember the version of Android which he is currently having. He has tried to download and install the required update using the same phone (he has internet connected) from http://www.sonyericsson.com but not able to install it. So, he asked me to help him. Which version of Android do you think he has? Does it seem like he does not have Android 2.1 installed. It is written here (click on Xperia X8) that If your phone already has Android 2.1, you can use your mobile network* or a WiFi connection to download the software. Is it possible that he does not have updated Android and so not able to download? If so, does he need to upgrade to Android 2.1 first? Should it be done by connecting it to a PC?

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• Using group policy preferences to push a file to C:\Windows on a restricted user.

  - by Fireshot

  We have a really old Video learning program that we need to run from the network for our students. However it uses Director Player 6.0 and the students get the error: "Unable to copy the driver file C:\Windows\xobglu16.dll to your Windows directory. Your disk may be full" Now the solution I've read is to copy the files manually to each machine and mark them read-only. I'm trying to do this via GPP, but the Event log is showing an Access is denied error. I believe it is because the student accounts do not have permission to c:\windows. Any ideas on a work around without using a script?

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• Why should krfb use so much cpu when I never use it?

  - by Newton Falls

  I was playing around with KSysGuard and I noticed the process using the most cpu was krfb, which is the server process for desktop sharing. I never use desktop sharing so I suppose it is a default loaded process. Why would this process use so much juice (around 15%) when I never use it and it really shouldn't be doing much of anything? I don't see any network activity so I don't think I am being hacked. I have suspended the process and nothing bad seems to have happened. Can I assume this is a safe thing to do?

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• HP Pavillion dm3 (Windows 7) BSOD,

  - by Lee

  HI I have a HP Pavilion dm3. It came up with a BSOD and then didn't give me an option to start up in safe mode. I dont have any cd drive, nor did it come with a Windows cd anyway. I presume that it has a partition in my laptop for that kinda stuff. I was hoping to boot it using a usb but I don't know how to do it or where to download the stuff from. I have access to network computers, so am able to download from the internet but it's not a Windows7 computer. I am able to download from the computers that I have access to, but unable to run any executable files on them. Can someone please help? Thanks in advance

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• Cisco Pix does not let traffic pass from outside to inside even though ACL permits

  - by Rickard

  I have tried to make my pix 515 allow traffic from outisde interface to inside, but despite permitting ACL's, it doesn't seem to let traffic through. (It is letting traffic out as it should though) I am have tried both of the following: access-list acl_in extended permit tcp any host 10.131.73.2 eq www and access-list acl_in extended permit ip any any None of them help, but I can access 10.131.73.2 from any host on the inside network. This is a one single host on the inside that should every now and then have an HTTP server running for development purpouses, so it doesn't need to reside on DMZ (and as far as I know, I can't place it on DMZ either as it's in the same subnet as the other ip's I have. Could I have missed anything? I am using PIX Version 8.0(4) My current running config looks like this: http://pastebin.com/TvRFyDrF Hope someone can help me get this working.

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• Slowdown after repeated hibernation in XP SP3

  - by John

  I have a Dell laptop w/dual core and 4 gigs of memory. Recently my machine has started to go off in never never land for 5 to 20 minutes at a time with a lot of hard drive churning. Eventually it comes back and everything operates properly. If I manage to have task manager up CPU usage shows no more then 3 to 5% during this process. I am on a corporate network and have very good virus protection in place. The problem seems to have increased in frequency since I let an update happen to IE8 and/or I started using hibernate more frequently. Any ideas or suggestions? TIA J

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• Recommendation for e-mail forwarding

  - by Paul Mrozowski

  We currently have a provider that we use to primarily forward our e-mails to both a hosted Exchange site and to outside e-mail addresses. We have a large # of forwards set-up (maybe 500). They work fine for us but the bandwidth costs are a getting pretty expensive (approx 80GB in email a month) so we're looking for a less expensive alternative (it costs us nearly $150/mo). I've looked at just hosting this here via a PostFix server and one of the nice front-ends available for it. However, I'm not thrilled with the prospect of being responsible for maintaining yet another server, backups, network connectivity, etc. So I'm leaning towards having this hosted by someone else if possible. Does anyone have any recommendations for hosting providers? Are there some I should stay away from?

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• Assign two static IP addresses to one mac address

  - by Timo Ylikännö

  Can Isc-dhcp-server give two static ip addresses to one mac address? I have several home terminals in my network. Each terminal have two interfaces. One for public traffic and one for a management traffic. Both interfaces have same mac address. DHCP server can detect interfaces via dhcp option field and dhcp class declarations. Every terminal have to have static ip address instead of dynamic address. With dynamic address and dynamic pools this would be an easy task. Or is there any dhcp server that can do this?

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• Prevent Focus-Stealing from any PopUp Window

  - by Florian Becke

  Hi there, i have a really annoying behavior on my Windows XP System. Any PopUp Windows (e.g. asking me for my network signin) automatically steal the focus and i end up typing half of my last line of code into the username-field of the message box. Since i have no chance to prevent the message boxes themselve, i really would like to prevent the focus change! I searched the web and here too, but the only valid answers use TweakUI and some registry entries. None of them work. I guess, its because they prevent focus stealing from another application and not from within the active application itself. Anyone out there who knows a solution to this? Thanks anyway ;) Flo

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• Best security practice for small networks - wifi, lan,

  - by Grimlockz

  We regularly setup small networks for clients in different locations to allow them to work on different products now the question what should be the best security practice. Currently we have a wifi enabled with WPA2 and most laptops connect to this but some will connect to a cabled switch connecting to the router. We are thinking on what we should do to increase the security on our small networks - We do have have security on the laptops so you can share directly to the other persons drive by a simple Windows user account. Some suggestions are: We get a LAN switch with ACL control and mac filtering for the hard wired connections? We get acl working on the wifi via a good Cisco router? ipSec policies on all machines? IP filtering and fixed IPs? I suppose people are worried that anyone can plug into the switches and get the access to the network . Summary: Maintain a level of decent security that can be replicated easily to every setup that we do for clients

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• Where do I learn about IP blocks and subnets? Or is there just a calculator that does it all for me?

  - by cwd

  Amazon's elastic compute tool (among others) requires the ip block format for their command: ec2-authorize websrv -P tcp -p 80 -s 205.192.0.0/16 I may be doing this wrong, but as far as I can tell I need to use the block format even for a single IP address. 1) So, how would I do that for this IP? 71.75.232.132 Several years ago I took a CCNA class, and I remember going over IPs and subnets, masks, broadcast addresses, class a/b/c networks, etc. However a lot seems to have changed since then - for example I don't think you can tell what "class" a network is in just by looking at it anymore - sometimes they could be multiple classes. 2) Anyhow, my second question is where do I go to get a refresher on all these things? 3) Or should I just be using ipcalc or an online calculator to do it all for me - and if so, which one?

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• How do I bridge connections in windows 7?

  - by Wolfgang Haak

  At work, our ISP has gone down, 3 days running. A company next door has kindly provided us with access to their wireless network, and I'd like to get our internal mail server (win 7) to become online via that wireless connection, while being accessible from within the LAN, but I'm struggling with the windows configuration. Our company's LAN subnet (wired interface) sits on 192.168.0. Neighbour's wireless subnet 192.168.1. I've tried bridging the connections but that disconnects the mail server from the Internet connection and the LAN. what do I have to do achieve this networking configuration? Kind regards, Wolfgang

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• What is the best MTA setup for a home/laptop computer (*not* server)?

  - by thomasrutter

  Hello, What is a good MTA (e.g. Postfix or something else) setup for a home computer behind a NAT, or a laptop that is not always online? I've read a lot of Postfix tutorials on how to set it up this way or that, but they are usually geared towards computers that are servers ie they have a static IP have a domain name are always connected to the same network My requirements are, I guess: Ability to redirect mail for local users to another server of my choosing. No listening for incoming SMTP connections - outgoing only Ability to route outgoing mail via an external SMTP server with authentication (and perhaps encryption) If not Postfix, I need an MTA which can queue up mails in case it temporarily has no internet connection.

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• Tömörítés becslése - Compression Advisor

  - by lsarecz

  Az Oracle Database 11g verziójától már OLTP adatbázisok is hatékonyan tömöríthetok az Advanced Compression funkcióval. Nem csak a tárolandó adatok mennyisége csökken ezáltal felére, vagy akár negyedére, de az adatbázis teljesítménye is javulhat, amennyiben I/O korlátos a rendszer (és általában az). Hogy pontosan mekkora tömörítés várható az Advanced Compression bevezetésével, az kiválóan becsülheto a Compression Advisor eszközzel. Ez nem csak az OLTP tömörítés mértékét, de 11gR2 verziótól kezdve a HCC tömörítés arányát is becsülni tudja, amely Exadata Database Machine, Pillar Axiom illetve ZFS Storage alkalmazásával érheto el. A HCC tömörítés becsléséhez csak 11gR2 adatbázisra van szükség, nem kell hozzá a speciális célhardver (Exadata, Pillar, ZFS). A Compression Advisor valójában a DBMS_COMPRESSION package használatával érheto el. A package-hez tartozik 6 konstans, amellyel a kívánt tömörítési szintek választhatók ki: Constant Type Value Description COMP_NOCOMPRESS NUMBER 1 No compression COMP_FOR_OLTP NUMBER 2 OLTP compression COMP_FOR_QUERY_HIGH NUMBER 4 High compression level for query operations COMP_FOR_QUERY_LOW NUMBER 8 Low compression level for query operations COMP_FOR_ARCHIVE_HIGH NUMBER 16 High compression level for archive operations COMP_FOR_ARCHIVE_LOW NUMBER 32 Low compression level for archive operations A GET_COMPRESSION_RATIO tárolt eljárás elemzi a tömöríteni kívánt táblát. Mindig csak egy táblát, vagy opcionálisan annak egy partícióját tudja elemezni úgy, hogy a tábláról készít egy másolatot egy külön erre a célra kijelölt/létrehozott táblatérre. Amennyiben az elemzést egyszerre több tömörítési szintre futtatjuk, úgy a tábláról annyi másolatot készít. A jó közelítésu becslés (+-5%) feltétele, hogy táblánként/partíciónként minimum 1 millió sor legyen. 11gR1 esetében még a DBMS_COMP_ADVISOR csomag GET_RATIO eljárása volt használatos, de ez még nem támogatta a HCC becslést. Érdemes még megnézni és kipróbálni a Tyler Muth blogjában publikált formázó eszközt, amivel a compression advisor kimenete alakítható jól értelmezheto formátumúvá. Végül összegezném mit is tartalmaz az Advanced Compression opció, mivel gyakran nem világos a felhasználóknak miért kell fizetni: Data Guard Network Compression Data Pump Compression (COMPRESSION=METADATA_ONLY does not require the Advanced Compression option) Multiple RMAN Compression Levels (RMAN DEFAULT COMPRESS does not require the Advanced Compression option) OLTP Table Compression SecureFiles Compression and Deduplication Ez alapján RMAN esetében például a default compression (BZIP2) szint ingyen használható, viszont az új ZLIB Advanced Compression opciót igényel. A ZLIB hatékonyabban használja a CPU-t, azaz jóval gyorsabb, viszont kisebb tömörítési arány érheto el vele.

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• Moving Windows 7 profile to new user

  - by Kevin Grossnicklaus

  I have a laptop which I've been using as part of a corporate network with an AD login (and associated local profile). The laptop is loaded with Windows 7 Ultimate. I need to remove the laptop from this domain and, to start this process, I have already configured a local user on the box for me to use moving forward (granting this user the same local admin rights as the AD user). I'd like to migrate all the files, settings, etc from the local AD profile to the new non-AD profile. Is there a simple way to do this? Anything built into Win 7? As far as basic files I can probably just manually copy all the documents, pictures, music, desktop, favorites, etc... But is there a more streamlined way to move profile information? -Kevin

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• Windows 7 / Windows Vista won't connect to 802.1x RADIUS Server

  - by Calvin Froedge

  I've deployed Radius and have no problems connecting with TTLS, PEAP, or MD5 using linux, mac, and windows xp. For Windows 7 and Vista, I'm never prompted with the dialog box to enter username & password after configuring 802.1x support on the client. Steps taken: Enabled Wired Autoconfig in services.msc Set to use PEAP Set to require user authentication When I enable the network connection it says "Trying to authenticate" then fails with no error log / message given. The radius server gives no indication that there was ever a request (no Access-Reject - the client simply never tries to authenticate). On the windows 7 client, I can see that the DHCP server does not assign an IP to the client when 802.1x is enabled on the client (though it does when it isn't). How can I debug this further? Has anyone else run into a similar situation? My radius server is freeradius on Ubuntu 11.10.

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• Providing high availability and failover using MySQL on EC2

  - by crb

  I would like to have a highly-available MySQL system, with automatic failover, running on Amazon EC2 instances. The standard approach to solving this is problem Heartbeat + DRBD, but I've found a lot of posts suggesting DRBD doesn't work on EC2, though none saying exactly why. Obviously, a serial heartbeat or distinct network is out of the question in the virtualised environment. It would also be good to have the different servers be in different availability zones, but we're getting into a much harder problem there. What are peoples' opinion on having a high uptime solution in "the cloud"?

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