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  • Live USB does not work

    - by MARUF SARKER
    I've made live USB using these "Universal-USB-Installer-1.9.1.9", "unetbootin-windows-581", "YUMI-0.0.8.0" & "LinuxLive USB Creator 2.8.18" in "FAT32" format, but unfortunately I could not boot using the pen-drive. My BIOS supports boot from USB drive. When I am booting from the live usb, it just show black screen with a blinking "_", but nothing happens after that( I have waited more than 10 minutes, but nothing happens). So, can anyone please help me on this? [Additional Info.: I've made Bootable USB using PowerISO and that booted, but it was not possible to access the USB normally afterwards,because PowerISO formatted the USB Drive as RAW(or anything I don't know) and it became 8GB to 700MB, afterwards I had to format it using MiniTool Partition manager.]

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  • Building a touch event driven UI from scratch: what algorithms or data types?

    - by user1717079
    I have a touch display. As input I can receive the coordinates and how many touch points are in use, basically I just get an X,Y couple for every touch event/activated point at a customizable rate. I need to start from this and build my own callback system to achieve something like Object.onUp().doSomething() meaning that I would like to abstract just the detection of some particular movements and not having to deal with raw data: what algorithms can be useful in this case? What statements? Is there some C++ library that I can dissect to get some useful info? Would you suggest the use of an heuristic algorithm?

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  • What happens to the storage capacity when I uninstall Ubuntu?

    - by shole1202
    I used the wubi installer for Ubuntu 12.04. After having trouble with getting the Operating System to boot, I tried uninstalling it with wubi. From 'My Computer' (in Windows 7), I noticed the maximum capacity of my hard drive drop from 256gb to 238gb. I have tried using some methods with the command prompt to locate the missing storage, but Windows now only recognizes that the storage on the disk to have 238gb instead of the original 256. Is there any way to recover that memory?

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  • JavaFX 2.2.4 Documentation

    - by user12610255
    JavaFX 2.2.4 and JDK 7u10 were released on Tuesday. In addition to the release documentation, the following new information is provided: A new document, Using the Image Ops API, describes how to read and write raw pixel data to and from JavaFX images. The Handling JavaFX Events document has been updated with more information on touch events. The Working with Touch Events chapter and Touch Events sample provide information about handling individual touch points to provide sophisticated responses to touch actions. The Implementing Best Practices document has been updated to include information about running tasks on background threads. The Troubleshooting section of Deploying JavaFX Applications now includes a section about disabling the automatic proxy configuration in your application code. Other documents were updated to reflect minor bug fixes. You can download JavaFX 2.2.4 from OTN. For all tutorials and API documentation, see http://docs.oracle.com/javafx.

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  • I am one step closer to installing ubuntu, back is grayed out and I was stupid enough to not make a backup

    - by user283544
    Ok, so yeah, i've been stupid enough not to make a backup and 1 step closer to installing ubuntu. What I need is that is windows totally safe and not gonna be touched I made a new partition from windows, and in ubuntu installer I chose "Something else" Then I chose that partition as an ext4 and mount "/" Device for bootloader is my hard disk, /dev/sda/, that's what keeps me a little aware. So I need a quick answer is my windows 7 gonna be touched?

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  • New SQL Monitor Custom Metric: Database Autogrowth

    This metric for Red Gate SQL Monitor measures the number of database autogrowth events (data file or log file) in the last hour. Too many autogrowth events causes disk fragmentation which requires a change in the autogrowth settings of a database. ‘Disturbing Development’Grant Fritchey & the DBA Team present the latest installment of the Top 5 hard-earned lessons of a DBA – read it now

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  • SQL Server Prefetch and Query Performance

    Prefetching can make a surprising difference to SQL Server query execution times where there is a high incidence of waiting for disk i/o operations, but the benefits come at a cost. Mostly, the Query Optimizer gets it right, but occasionally there are queries that would benefit from tuning. Get smart with SQL Backup ProGet faster, smaller backups with integrated verification.Quickly and easily DBCC CHECKDB your backups. Learn more.

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  • Better php framework for shared hosting

    - by ravz
    I need to develop an app for booking appointments. This is gonna be hosted in a shared server. So performance is the most important thing. I have used symfony2. I quite liked the framework. But seems to be heavy. Which framework would suit me considering my requirements? I have shortlisted three frameworks yii, symfony2 and ZF2. I am not asking which framework is better. All the three are good frameworks. I want to know which will suit my requirements. My first priority would be performance (I will be using AJAX wherever possible), second would be maintenance and development time and third community support. Or should I use my own handlers to separate views and logic and just use raw php?

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  • Installing Ubuntu in EFI mode Cant go beyond GRUB Menu

    - by Vulcan
    I created a LiveUSB of Ubuntu 12.04.3 LTS using Pendrive Linux. -Created a separate 30GB partition using Windows 8 Disk Management -Disabled Secure Boot (Didn't find an option to disable EFI boot) -Disabled Fast Startup The laptop starts the GRUB menu shows up but it doesn't go beyond that no matter what option i choose. After choosing any option the screen goes blank but the power is still on i can see the power light. My laptop is HP-n012tx processor- Intel i5 4200U Video Card- 2GBnVidia 740M The GRUB menu i see http://i.stack.imgur.com/buEAn.png

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  • Pitfalls of using a WYSIWYG editor? [closed]

    - by user50849
    I'm interested in reasons for disallowing content editors on medium to large sites, from using various forms of WYSIWYG editors. A common problematic scenario I can think of is that with the use of a WYSIWYG, an editor uploads an image "somewhere" to the file-system, inserts it directly into the text, and publishes the article. Shortly afterwards, someone wants to pull out "The last 10 uploaded images", and display them on the frontpage. Good luck parsing all the content. Taking a look around at some large international online magazines, such as http://www.time.com/, and some local ones, I see that the editors seem to produce articles that are almost only consisting of raw text. Images are usually at the top of the article, and otherwise the most complex content are usually links. What are some common reasons for refusing editors access to WYSIWYG tools?

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  • A quick look at: sys.dm_os_buffer_descriptors

    - by fatherjack
    SQL Server places data into cache as it reads it from disk so as to speed up future queries. This dmv lets you see how much data is cached at any given time and knowing how this changes over time can help you ensure your servers run smoothly and are adequately resourced to run your systems. This dmv gives the number of cached pages in the buffer pool along with the database id that they relate to: USE [tempdb] GO SELECT COUNT(*) AS cached_pages_count , CASE database_id ...(read more)

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  • install ubuntu with windows 7

    - by Olansile Okanlawon
    i finally decided to clear my hard disk and start over again, i need to install both ubuntu 12.04 and windows 7. I currently have two problems: 1. I have installed ubuntu on the fresh 320 GB drive, but when i restart i can't boot into my ubuntu, except i insert the flash drive i used for the installation into my system during d boot process. 2. What's the best and easiest way to install ubuntu 12.04 on a seperate partition, and how do i go about the partitioning

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  • Analyzing I/O performance in Linux

    <b>cmdln.org:</b> "Monitoring and analyzing performance is an important task for any sysadmin. Disk I/O bottlenecks can bring applications to a crawl. What is an IOP? Should I use SATA, SAS, or FC? How many spindles do I need?"

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  • Cant get to install menu, liveCD

    - by user204979
    When I tried to run the Ubuntu install disc i get a purple screen with some little images down the bottom, then a flashing cursor for a second and then the screen goes black like there is no in I have tried changing BIOS settings that supposedly interfere, different disk drives and trying to access the advanced menu all to no avail! All the answers for black screens require you to be able to get the menu which i cant! Help would be much appreciated!

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  • Getting the Most out of Statistics

    Statistics keep track of our data and will tell SQL Server how to make the best optimization decisions. Knowing how they work can make understanding query and performance problems much easier! Free eBook - Performance Tuning with DMVsThis free eBook provides you with the core techniques and scripts to monitor your query execution, index usage, session and transaction activity, disk IO, and more. Download the free eBook.

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  • Unable to access “430 GB Volume”

    - by user170924
    Error mounting /dev/sda3 at /media/fehr/D42CAFD92CAFB4C0: Command-line `mount -t "ntfs" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,dmask=0077,fmask=0177" "/dev/sda3" "/media/fehr/D42CAFD92CAFB4C0"' exited with non-zero exit status 14: The disk contains an unclean file system (0, 0). Metadata kept in Windows cache, refused to mount. Failed to mount '/dev/sda3': Operation not permitted The NTFS partition is in an unsafe state. Please resume and shutdown Windows fully (no hibernation or fast restarting), or mount the volume read-only with the 'ro' mount option.

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  • What is a byte stream actually?

    - by user2720323
    Can anyone explain me what byte stream actually contains? Does it contain bytes (hex data) or binary data or english letters only? I am also confused about the term Raw Data. If someone asked me to "reverse the 4 byte data", then what should I assume the data is hex code or binary code? Can anyone please clarify this for me. I have read so many articles and in java and c. They used to talk these words frequently but never understood them clearly.

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  • ??????????

    - by Allen Gao
    ???????RAC??????????????????10gR2?11gR1.??????????????CRS???????1.ocssd : ???????????(Node Monitoring)????(Group Management),??CRS????????????????????????,????????????(network heartbeat)?????(disk heartbeat)???,?????????????????????,????????????,??????????????????,?????node kill escalation(???11gR1????????),??????????????????????????(reboot time,???3?)????????:ocssd.bin??????????????????????????,??????????????????????????????,misscount(???30?,??????????????600?),????????????,???????????????????,?????????????2???,??????,??????????????,?????????????????????:ocssd.bin?????????????(Voting File)??????????,?????????????????????????????,disk timeou(???200?),?????????????????????,CRS???[N/2]+1????????,??N??????,??????2.oclsomon:????????ocssd????,????ocssd.bin??????,???????3.oprocd:??????Linux?Unix??,????????????????????????????????,?????????:????????????init.cssd?????????????????????????1.??????2.<crs???>/log/<????>/cssd/ocssd.log3.oprocd.log(/etc/oracle/oprocd/*.log.* ? /var/opt/oracle/oprocd/*.log.*)4.<crs???>/log/<????>/cssd/oclsomon/oclsomon.log5. Oracle OSWatcher ????????????????????1.?ocssd???????????ocssd.log???????,????????????????????????????????,???????,OSW??(traceroute???),???????(cluster interconnect)??????,?????????[ CSSD]2012-03-02 23:56:18.749 [3086] >WARNING: clssnmPollingThread: node <node_name> at 50% heartbeat fatal, eviction in 14.494 seconds[ CSSD]2012-03-02 23:56:25.749 [3086] >WARNING: clssnmPollingThread: node <node_name> at 75% heartbeat fatal, eviction in 7.494 seconds[ CSSD]2012-03-02 23:56:32.749 [3086] >WARNING: clssnmPollingThread: node <node_name>at 90% heartbeat fatal, eviction in 0.494 seconds[CSSD]2012-03-02 23:56:33.243 [3086] >TRACE:   clssnmPollingThread: Eviction started for node <node_name>, flags 0x040d, state 3, wt4c 0[CSSD]2012-03-02 23:56:33.243 [3086] >TRACE:   clssnmDiscHelper: <node_name>, node(4) connection failed, con (1128a5530), probe(0)[CSSD]2012-03-02 23:56:33.243 [3086] >TRACE:   clssnmDiscHelper: node 4 clean up, con (1128a5530), init state 5, cur state 5[CSSD]2012-03-02 23:56:33.243 [3600] >TRACE:   clssnmDoSyncUpdate: Initiating sync 196446491[CSSD]2012-03-02 23:56:33.243 [3600] >TRACE:   clssnmDoSyncUpdate: diskTimeout set to (27000)ms??:???????ocssd.log?????????????????????,?????????????????????ocssd.log???????,??????????????????????????????,OSWatcher??(iostat???),???i/o????????,?????????2010-08-13 18:34:37.423: [    CSSD][150477728]clssnmvDiskOpen: Opening /dev/sdb82010-08-13 18:34:37.423: [    CLSF][150477728]Opened hdl:0xf4336530 for dev:/dev/sdb8:2010-08-13 18:34:37.429: [   SKGFD][150477728]ERROR: -9(Error 27072, OS Error (Linux Error: 5: Input/output errorAdditional information: 4Additional information: 720913Additional information: -1))2010-08-13 18:34:37.429: [    CSSD][150477728](:CSSNM00060: )clssnmvReadBlocks: read failed at offset 17 of /dev/sdb82010-08-13 18:34:38.205: [    CSSD][4110736288](:CSSNM00058: )clssnmvDiskCheck: No I/O completions for 200880 ms for voting file /dev/sdb8)2010-08-13 18:34:38.206: [    CSSD][4110736288](:CSSNM00018: )clssnmvDiskCheck: Aborting, 0 of 1 configured voting disks available, need 12010-08-13 18:34:38.206: [    CSSD][4110736288]###################################2010-08-13 18:34:38.206: [    CSSD][4110736288]clssscExit: CSSD aborting from thread clssnmvDiskPingMonitorThread 2010-08-13 18:34:38.206: [    CSSD][4110736288]###################################2. ?oclsomon???????????oclsomon.log ?????,??????????ocssd????,??ocssd??????(RT)???,?????????????(?cpu)??,?????????????,OSW??(vmstat,top???),?????????3.?oprocd???????????oprocd?????????,?????????oprocd????? Dec 21 16:15:30.369857 | LASTGASP | AlarmHandler:  timeout(2312 msec) exceeds interval(1000 msec)+margin(500 msec).   Rebooting NOW.??oprocd?????????????????????,?????ntp(?????????),??diagwait=13 ????????,??,?????????????,??????CRS,???????????????,??????????????oprocd????,??,?????OSWatcher??(vmstat,top???),??????????????????????????????,????????????????? ???????,??????MOS ???Note 265769.1 :Troubleshooting 10g and 11.1 Clusterware RebootsNote 1050693.1 :Troubleshooting 11.2 Clusterware Node Evictions (Reboots)

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  • "shutting down hyper-v virtual machine management service"

    - by icelava
    I have a Windows 2008 R2 server that is a Hyper-V host (Dell PowerEdge T300). Today for the first time I encountered an odd situation; i lost connection with one of the guest machines but logging on physically it seems the guest OS is still running but no longer contactable via the network. I tried to shut down the guest machine (Windows XP) but it would not shut down, getting stuck in a "Not responding" dialog box that cannot be dismissed. I used the Hyper-V management console to reset the machine and it could not get out of resetting state. I tried to save another Windows 2003 guest machine, and it would be progress with its Saving state (0%). The other running Windows 2003 guest was stuck in the logon dialog. My first suspicion is perhaps one of the Windows update patches this week (10 Nov 2011) may something to do with it, which was still pending a system restart. Well, since I could not do anything with Hyper-V i proceeded with the Windows Update restart, and now it is stuck half an hour at "Shutting down hyper-v virtual machine management service" Prior to restarting I did not observe any hard disk errors reported in the system event log; doubt it is a disk-related condition. Shall I force a hard reboot? UPDATE As per answer report, it eventually restarted itself.

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  • Oracle VM repository creation seems contradictory to its server pool?

    - by Michael
    I found something contradictory in Oracle VM. Clustered server pool creation in Oracle VM would format my FC LUN as ocfs2 , and start o2cb & ocfs2 services to build cluster environment. After that, when I wanted to create repository on the serverpool, unexpectedly, it told me that the physical disk I chose which is also my FC LUN, already contains a file system. What a contradictory! So what, delete the file system in serverpool? If so, why created it before?! OVM> list physicaldisk Command: list physicaldisk Status: Success Time: 2012-09-10 06:44:42.660 Data: id:0004fb00001800007765e62381895f61 name:OVM_HDS OVM> create serverpool clusterenable=true virtualip=10.84.21.123 physicaldisk=OVM_HDS name=ovmserverpool Serverpool creation took quite a long time since my FC LUN was big. When the creation completed, my FC LUN was created as ocfs2 and o2cb & ocfs2 services were started on my ovm servers successfully. But then repository creation indeed throws me a big surprise ... OVM> create repository serverpool=ovmserverpool physicaldisk=OVM_HDS name=ovmrepo Command: create repository serverpool=ovmserverpool physicaldisk=OVM_HDS name=ovmrepo Status: Failure Time: 2012-09-10 06:23:44.656 Error Msg: com.oracle.ovm.mgr.api.exception.RuleException: OVMRU_002026E Cannot use or delete physical disk: OVM_HDS, it already contains a file system: [Pool filesystem for ovmserverpool] Mon Sep 10 06:23:44 CST 2012 What should I do now? Delete the filesystem using dd command? That would destroy the serverpool, right? I'm really confused. My OVM Manager version is 3.1.1.399 which is the latest. Any tips are appreciated. Thanks.

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  • Adaptec 6405 RAID controller turned on red LED

    - by nn4l
    I have a server with an Adaptec 6405 RAID controller and 4 disks in a RAID 5 configuration. Staff in the data center called me because they noticed a red LED was turned on in one of the drive bays. I have then checked the status using 'arcconf getconfig 1' and I got the status message 'Logical devices/Failed/Degraded: 2/0/1'. The status of the logical devices was listed as 'Rebuilding'. However, I did not get any suspicious status of the affected physical device, the S.M.A.R.T. setting was 'no', the S.M.A.R.T. warnings were '0' and also 'arcconf getsmartstatus 1' returned no problems with any of the disk drives. The 'arcconf getlogs 1 events tabular' command gives lots of output (sorry, can't paste the log file here as I only have remote console access, I could post a screenshot though). Here are some sample entries: eventtype FSA_EM_EXPANDED_EVENT grouptype FSA_EXE_SCSI_GROUP subtype FSA_EXE_SCSI_SENSE_DATA subtypecode 12 cdb 28 00 17 c4 74 00 00 02 00 00 00 00 data 70 00 06 00 00 00 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 00 0 The 'arcconf getlogs 1 device tabular' command reports mediumErrors 1 for two of the disks. Today, I have checked the status of the controller again. Everything is back to normal, the controller status is now 'Logical devices/Failed/Degraded: 2/0/0', the logical devices are also all back to 'Optimal'. I was not able to check the LED status, my guess is that the red LED is off again. Now I have a lot of questions: what is a possible cause for the medium error, why it is not reported by the SMART log too? Should I replace the disk drives? They were purchased just a month ago. The rebuilding process took one or two days, is that normal? The disks are 2 TByte each and the storage system is mostly idling. the timestamp of the logs seem to show the moment of the log retrieval, not the moment of the incident. Please advise, all help is very appreciated.

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  • "Dictionary problem." Error with VMPlayer

    - by George Mauer
    I'm pretty new to using vmware virtualization (been a virtualbox user) so I'm hoping you guys can help me out. I recently got an external usb disk containing a vm for a client, downloaded vmplayer, set it up with "Open a Virtual Machine", ran it, easy as pie. After working with it a bit this morning, I shut the VM down and now trying to start it back up again I get this: I tried removing the vm from my library, now it happens whenever I try to add it back in. In the meantime, I can still access other virtual machines so it seems like the problem might be with the virtual disk. So two questions: This is obviously not a very helpful error message. Where can I go to get more information? My Application EventLog doesn't contain anything from VMWare. What steps can I take to fix the problem? Edit: A couple more pieces of information. I did not take any snapshots. I don't think VM Player even has that ability. I have a zip file of (what I assume) is the state of the VM when it was sent to me. I cannot unzip it as it is huge and simply requires more HD space than I have available but I did extract the vmx file and examine it. Other than the UUIDs and the fact that mine reads cleanShutdown = "FALSE" they are identical. The log contains the following lines Jun 23 10:11:18.080: vmx| SNAPSHOT: SnapshotConfigInfoRead: Unable to load dict from 'E:....\MachineName.vmsd'. Jun 23 10:11:18.080: vmx| SNAPSHOT: SnapshotConfigInfoRead failed for file 'E:....\MachineName.vmx': Dictionary problem (6) Jun 23 10:11:18.082: vmx| SNAPSHOT: Snapshot_TimeStampTiers failed: Dictionary problem (6)

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  • How to disable the RAID in x3400 M2

    - by BanKtsu
    Hi I just wanna disable the default RAID in my server IBM System X3400 M2 Server(7837-24X),i have 3 disk drives SAS. I want to make them a JBOD "Just a Bunch Of Disks", because I want to install in the drive 0 CentOS, and the other two make them cache files for a squid server. I disable the RAID in the BIOS: System Settings/Adapters and UEFI drivers/LSI Logic Fusion MPT SAS Driver -PciRoot(0x0)/Pci(0x3,0X0)/Pci(0x0,0x0) LSI Logic MPT Setup Utility RAID Properties/Delete Array Later I boot the CentOS live CD and install the OS in the drive 0, and the others 2 mounted like this: *LVM Volume Groups vg_proxyserver 139508 lv_root 51200 / ext4 lv_home 84276 /home ext4 lv_swap 4032 Hard Drive sdb(/dev/sdb) free 140011 sdc(/dev/sdc) free 140011 sdd(/dev/sdd) sdd1 500 /boot ext4 sdd2 139512 vg_proxyserver physical volume(LVM) But when I restart the server give me the error: Boot failed Hard Disk 0 UEFI PXE PciRoot(0x0)/Pci(0x1,0X0)/Pci(0x0,0x0)/MAC(001A64B15130,0X0)) ........PXE-E18:Server response timeout. UEFI PXE PciRoot(0x0)/Pci(0x1,0X0)/Pci(0x0,0x0)/MAC(001A64B15132,0X0)) ........PXE-E18:Server response timeout. and the OS not start. The IBM force me to do a RAID?,why?

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  • Performance analytics via DBMS "plugins", or other solution

    - by Polynomial
    I'm working on a systems monitoring product that currently focuses on performance at the system level. We're expanding out to monitoring database systems. Right now we can fetch simple performance information from a selection of DBMS, like connection count, disk IO rates, lock wait times, etc. However, we'd really like a way to measure the execution time of every query going into a DBMS, without requiring the client to implement monitoring in their application code. Some potential solutions might be: Some sort of proxy that sits between client and server. SSL might be an issue here, plus it requires us to reverse engineer and implement the network protocol for each DBMS. Plugin for each DBMS system that automatically records performance information when a query comes in. Other problems include "anonymising" the SQL, i.e. taking something like SELECT * FROM products WHERE price > 20 AND name LIKE "%disk%" and producing SELECT * FROM products WHERE price > ? AND name LIKE "%?%", though this shouldn't be too difficult with some clever parsing and regex. We're mainly focusing on: MySQL MSSQL Oracle Redis mongodb memcached Are there any plugin-style mechanisms we can utilise for any of these? Or is there a simpler solution?

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