Prepare disks using ASMlib and oracleasm ASM

Similar Questions

• Prepare disks for ASM (data files and FRA)

  I intend to place data files on a disc 1 (sd1) and disk2 (PSD) when the backup of files (FRA) on disk3 (SDC). Here's how I'd do:
  
  For data files
  Disk1 is divided into a single primary partition (with native Linux what ID 83 not formatted system)
  Disk2 is also divided into a single primary partition (with native Linux ID 83 system not formatted)
  
  oracleasm createdisk vol1/dev/sda1
  oracleasm createdisk vol2/dev/sdb1
  
  CREATE DISKGROUP DATA EXTERNAL vol1, vol2 REDUNDANCY;
  
  
  For backup FRA
  
  Disk3 is partitioned into four primary partitions: / Boot (ext3), / (ext3), swap (swap) and /u01 (ext3)
  
  The FRA will be put under the/U01 and then attend the ASM:
  
  oracleasm vol3/dev/sdc4 createdisk
  CREATE DISKGROUP DATA EXTERNAL vol3 REDUNDANCY;
  
  Now, the problem. (1) the/U01 has already be formatted in ext3; (2) Oracle (DBMS) software will also be place under/U01
  
  It will be a problem?
  
  
  Otherwise, I can put FRA on the same drive as the data files, i.e. on disk1 and disk2. In this case, I need to partition the disk 1 in two primary parititions sda1 and sda2 (native Linux system ID 83 not formatted), one for data files and another for FRA (do the same for disk2). The downside is that the data file and the file recovery will be on the same hard drive.
  
  
  Please offer some suggestions.
  
  
  Thank you
  
  Scott
  
  PS: in the environment of production, all the disc 1, 2 and 3 will be on hardware RAID 1.

  RAID 1 will protect you only a device failure. It won't protect you partition, the file damage system or user errors; It will be in the image of the errors and problems like any other data.

  So what happens if you delete by mistake / U01 or some other accident happens and you loose that partition? With your current setup, you will lose everything and will not be able to restore or recover the database. Put tablespaces FRA and DB on the same physical device is certainly a very bad idea, whether or not it is a RAID.

  ASM is not a software RAID 1 mirror. It ensures redundancy of data based on file extensions and knows about files of Oracle database, which is a very good thing. You probably do not want to specify 'external redundancy.

  In a production system, you'll certainly want to mux the critical data and to store the DB controlfiles, redo logs and finally archivelogs on media separate physically in order to avoid the single point of failures wherever possible. You can use partitions and volumes in ASM, but they should be separate physical drives, otherwise you will bypass the ASM data redundancy. You must also have a solid strategy for RMAN backup. The FRA is supposed to store backupsets RMAN, copies of the image, the important archivelogs and multiplexes of the copies of the database files and should therefore always on a separate physical disk.

  Unless you simply play, I strongly suggest that review you your current configuration.

  Published by: Dude on June 29, 2012 04:55

• Real advantage of using ASMLIB for ASM

  Hi all

  I have some confusion related to the configuration of the DSO.

  configuration ASM 10 g on RHEL

  As we know ASM can be configured using the ASM Library driver or RAW devices.

  For both options, we use discs (unformatted DISKS) == > raw disks.

  
  

  What is the real advantage that I get asm configuration using asmlib s/w?

  
  

  
  

  
  

  I'm still struggling to know additional benefit when I'm chosen asmlib configure rather than raw.

  Can only repeat what you said before: there is no "additional benefit" to the use of the ASMLib instead of udev. In the current version, the ASMLib is replaced by the ASM filter driver, which has more features.

• If you use network storage, configure ASM disks with external redundancy groups

  Hi Experts,

  If you use network storage, configure ASM disks with external redundancy groups. Don't use groups of Oracle ASM failure. Oracle failure groups consume cycles additional CPU and can run in unpredictable ways after suffering from a disk failure. When you use external redundancy, disk failure are transparent to the database and do consume no additional database CPU cycle, because it is discharged on storage processors.

  This does not mean

  • RAID 1 + 0 for diskgroup + REDO1
  • RAID 1 + 0 for diskgroup + REDO2
  • RAID 5 for diskgroup + DATA
  • RAID 5 for diskgroup + FRA

  Is this one suggested, the recommended best practices for oracle on VMWARE?

  
  

  Thank you and best regards,

  IVW

  
  

  Hello

  You can check the storage analysis as well...

  http://www.Dell.com/downloads/global/solutions/tradeoffs_RAID5_RAID10.PDF

  discussion of the Oracle

  https://asktom.Oracle.com/pls/asktom/f?p=100:11:P11_QUESTION_ID:359617936136

• Prepare to use a physical disk or an unused Partition

  VMWare Workstation version 8.0.4 build-744019

  SE host: Windows 7 64-bit

  Host HW: 8 GB, Intel Core I7-2670QM 2.2 GHz (4 cores, 8 wires)

  I have a 512 GB SSD (OCZ Vertex 4) in my machine, bought specially to speed up the construction process of the cores for embedded systems.

  I installed Windows 7 64 bit on this SSD and booting from it. I shrunk the drive in Windows 7 diskmanager and released a 100 GB partition to use for a virtual machine running Windows 7 32 bit.

  Training VMWare this 100 GB on disk 0 partition format the easy installation. The Windows 7 installation screen displays this error in step "copying files...". ». The error is 0 x 80070057.

  The States of using VMWare guide (on page 14, under the title 'Prepare to use a disc or unused physical Partition'):

  On Windows Vista and Windows 7 hosts, you cannot use the system partition or physical disk that

  contains, in a virtual machine.
  I just read that I can't do what I'm doing? I can't use a partition on the physical disk that is used to start the host for a virtual machine operating system?
  What is the technical reason for this? Is this something that will be possible in the future (or even now with a workaround) or is it something that is technically simply not possible?
  The reason for me trying to create a virtual machine that has direct access to my SSD is to speed up the virtual machine. I use it to build kernels. Build a kernel 'natively', so outside of a VM, takes 5 minutes. The same core within a virtual machine of construction takes 30 minutes, and it's on a virtual machine that has files of virtual disk it's on this same (very fast) SSD.
  Is there another way to speed up my built inside the virtual machine? The bottleneck is disk access. It's just terribly slow in the VM and lightning fast outside.

  I hope someone can give me some advice! Thanks in advance!

  You can only assign physical drives in a virtual computer with a crowd of Win7 so player set 'offline '.
  Otherwise, you will encounter problems just after starting the virtual machine - the host then banned access to training and the virtual machine stops

  Of course, you can NOT set the drive system 'offline' on a host with a single disc.

  The performance of a physical disk and a preallouee vmdk should be almost the same.

• I use FrostWire and the other asked me to update, so I did and came up with this message, 'FrostWire can damage your computer. You must eject the disk image.

  Hello...

  I wonder if you can help me with a problem with my desktop OS X El Capitan 10.11.4 various...

  I use FrostWire and the other asked me to update, so I did and came up with this message, 'FrostWire can damage your computer. You must eject the disk image. There is no disk in my hard drive... I try to download again, but still the same message...

  Help, please...

  Much thanks

  Lisa

  < re-titled by host >

  The actual message means you need to move the mounted image - the small icon that is displayed after you double-click the .dmg - and put it in the trash.

  Where do you see the message your computer?

• External hard drive suddenly cannot open it give the message error "you must format the disk in the drive until you can use it", and your hard disk is 0 bytes

  External hard drive can not suddenly open - fixed

  my external hard drive worked very well all the time, but suddenly I can't open it more, when I tried to open it, it gives the error message "You must format the disk in the drive until you can use it" and my hard drive is 0 bytes, average there is no file in the hard drive. Average, all the data inside hard disk are gone!

  Hello muhammad.

  Before you do anything with this player, you can search online for some data recovery utilities so that you can try to recover your data.

  What operating system do you use?

  Have you tried running chkdsk on the drive?

  Let us know.

  Best regards

  Matthew_Ha

• SATA using more slow disks for FRA and archivelogs

  1. I am looking for some advice on staging on a SAN storage for my oracle database. I currently have a San with all SAS 15 K drives and I'm looking to develop the San and add SATA 7.2 K disks store. I want to locate our FRA including our "disk to disk" backup oracle and our archive of these disks SATA 7.2 logs and I was wondering if any effect it would have on our production database?

  2. also, I also plan to place an instance of development entirely on the 7.2 K drives and I was wondering what to expect for performance in this regard?

  Thank you

  Oracle cannot know the details ( t - it? ), but it can occupy.  If your slower disks cannot archive logs fast enough because, well, they are slower, and you have other things going on over there, in the worst case, it could stall your db.  I hope that you would have enough newspapers of recovery to avoid this, but if all goes by one controller, you can still have a problem.  And then, if your system is linked to the CPU, it can make no difference at all.  But if being cpu bound to the means available to it to wait for the processor to perform queries of e/s, it could.  Difficult to say without testing, huh?  in any case, with a San, number of batteries often makes more of a difference than the speed controller and the buffering, buffering, network problems, and so on all are potential bottlenecks or has.  And bottlenecks that make the difference.

• Can you stamped asmlib and udev discs coexist?

  Version Infra grid: 11.2.0.4

  OS: Oracle Linux 6.5

  Storage: EMC VMAX (using PowerPath for MPIO)

  We have a new DBA Manager, who did not work in a Linux environment. He worked only in Solaris and AIX before.

  All our production RAC cluster to stamp the ASM Lib disk. Our Manager taught udev on linux. He said, why do we need an additional layer (pilot ASMLib) to the timbre of the discs when we udev who hails from Linux? It might be good. But for existing production RAC clusters where we had used only ASMLib until now, he wants us to stop stamping the SAN using Asmlib disks and only use UDEV to all new disk that will be added to the diskgroup.

  Can you stamped asmlib and udev records coexist in an ASM diskgroup in a RAC cluster? I know it's a matter of ASM-specific, but I want a RAC cluster perspective. That's why post it here.

  Of course, no problem. He made several times - usually during ASMLib migration. Simply set asm_diskstring = ORCL: *, / dev /.

  Away ASMLib, it's history. However, you might want to look at the filter of ASM rather than udev driver.

• Cannot write anything to disk using Nero 2014 on Qosmio G50

  Hello

  I can't burn things on disk?
  I have no idea why, as a few months ago, I have had no problems.

  I recently did a complete re install of my Qosmio, changing the OP from 32 bit to 64 bit.

  I converted x for DVDs but will not burn using it and I have nero 2014 but yet, I can't burn anything.

  Would appreciate any help...

  Thank you...

  Hello

  Have you tried different types of disks from different manufacturers?
  I had a few problems in the latest data written to some CD and DVD discs.

  Finally, I found a few good work of TDK discs. Now, I use CD - R and DVD-R discs.

  In addition, you could clean the laser lens with cotton wool trick and liquid alcohol. It could also help. But make sure what does this work.

• Remove temporary files from the local disk c/documents and settings/user/localsettings/temp name

  Remove temporary files from the local disk c/documents and settings/user/localsettings/temp name

  By definition, this folder should contain only the elements you don't need.  If I understand correctly, this temporary folder is a place where temporary files are stored during program facilities and the facilities.  However, I have seen references other sites to help saying some programs can store folders and files.

  I do my own temporary file elsewhere, name it accordingly and move all the files in the temp folder to the new folder. Use your computer normally for a while, and if nothing complains about missing files, you have a good indication that none of the moved files are important and should be safe to delete.

• Tried to re - install XP with Microsoft Certified intallation disk using the original key code, but the installer doesn't recogize my valid original key code.

  Tried to reinstall XP with Microsoft Certified intallation disk using the original key code.  But the installer refuses to recogize my valid original key code.  How can I "force" the program to accept the code and/or how to circumvent the code and reinstall XP?

  original title: tried to reinstall XP

  How to activate Windows XP
  http://support.Microsoft.com/kb/307890/en-us

  See the section titled: "how to activate Windows XP by phone.
  Also, make sure that you do not confuse the product key numbers and letters
  (number 8 for the letter B, etc.)

  Blank page to activate Windows in the wizard of Windows Product Activation
  http://support.Microsoft.com/kb/314935

  How to contact a Microsoft Product Activation Center:
  http://support.Microsoft.com/default.aspx/KB/950929/en=us

  Microsoft Activation centers worldwide telephone numbers:
  http://www.Microsoft.com/licensing/existing-customers/activation-centers.aspx
  (This site is for activating Volume License, but if you call, they will help you)

  The phone number is not working:
  Microsoft Wordwide contacts: http://www.microsoft.com/worldwide/default.aspx

  Once Windows activated / Genuine Advantage Notifications:
  http://www.Microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=afd45b36-3d77-4259-801c-d31a9a90cdcf
  (This tool will confirm that the copy of Windows installed on your PC is genuine and authorized)

  J W Stuart: Http://www.pagestart.com

• Once I reset my battery CMOS from one day to the next. I tried to install my recovery disk this morning and can't get it done

  Once I reset my battery CMOS from one day to the next.  I tried to install my recovery disk this morning and can't get it done.  I kept receiving an error of 100.
  Don't know what to do.
  Are there out there can HELP?

  Please, I beg you!

  Thank you

  Hello

  Would you please ask the same questions more then once in these Forums.

  What you're doing is confusing in these Forums, as nobody else knows what advice are envisaged for you in other responses.

  Other questions, it seems you have an HP computer.

  Here is the information of HP for Vista from recovery to factory settings:

  "Recover Windows Vista operating system using HP Recovery"

  http://h10025.www1.HP.com/ewfrf/wc/document?DocName=c00809678&LC=en&DLC=en&cc=us&product=18703

  Restore the PC to its original state with the recovery discs

  If the PC cannot access the Windows desktop, and the Recovery Manager cannot be started by selecting the f11 at startup key, you can use either the recovery disc custom that you created, or you can order a recovery CD to replace HP, to boot the PC and restore the hard drive to its original operating state.
  

  NOTE: perform the recovery process by using the custom recovery disk you created can take less than an hour, whilst using the replacement disks ordered directly from HP can take four to six hours and includes several reboots.
  If the HP Recovery Disk Manager can access the hard drive, it will attempt to repair the recovery partition. If successful, a prompt to continue execution of the recovery using the Recovery Disk Manager.
  Use the recovery discs to restore the PC by following the steps below.
  1. Insert the recovery disc into the optical disc drive and start the computer.
     If the computer is running, insert the reinstallation disc and immediately click on Start and select restart to force the computer to boot from the recovery disc.
  2. When prompted, Press any key to boot from the CD or DVD, press any key on the keyboard.
  3. Leave the recovery disk boot and load the files required, while the Microsoft loading screen appears. It may take several minutes to load the required files.
  4. When the HP Recovery Manager window appears, click Advanced options , System Recovery , and then click Next to open the Recovery Manager.
  5. etc.

  If you are having problems using the HP recovery process, you will need to contact HP, because this is Recovery process HP, not Microsoft.

  Details of HP:

  http://WWW8.HP.com/us/en/contact-HP/contact.html

  You can also try the Forums from the HP Support:

  http://h30434.www3.HP.com/

  See you soon.

• I receive a "Low disk space" message and to free up space (d) car which seems full of backup files dating from when I got the laptop in 2008.

  I receive a "Low disk space" message and to free up space (d) car which seems full of backup files dating from when I got the laptop. Now I also have the message 'the last backup impossible' because I don't have enough space on this drive.  He had originally 110 GB Local disk (d :)) and it fell to 7.44 MB of free space.) Can I remove the back of the 'safeguards' located in the 3 files and start on the 17/04/2008 right up to 2011-01.05 and just keep the last backup or removing the back will cause problems? Can someone help thank you.

  Hi KarenRoss56,

  You can try to remove the old files of backup from 2008 to 2010 and check.

  Note: When you delete these files and later if you perform a restore, you will not be able to get previous data. If you need one of these files, you can transfer the files to an external drive before you delete the system files.

  You can also use Disk Cleanup to reduce the number of unnecessary files on your hard disk to free up disk space and help your computer run more quickly.

  Delete files using disk cleanup

  Hope this information is useful.

• I can reduce a virtual disk using Openmanage

  I had a PERC H730 configured as a RAID 6, and a unique VD was created which contains 6 - 2 TB disk, which gave us a total of 7.5 TB of usable space. Now I don't know if I'm doing something wrong but windows server is only allowing me to create partitions of 2 TB and since we have an operating system installed there and the owners want to keep the recovery partition and we have the OEM partition, which gives me the possibility to create more than just 2 partitions of 2 TB each , so I have about 3 TB that are unallocated and I cannot use it.

  So, am I doing something wrong on windows? and if not is there a way to reduce the disk used on the main VD configured on the RAID, so I can create a second disk and recover unused space.

  I did in regards to the menu reconfigures Openmanage, but don't know if I can do it from there.

  Any help will be appreciated.

  -Jose

  First of all, you can not "shrink" RAID arrays on RAID controllers, use less or use less disk space.

  Second:

  • Windows cannot use a 'disc' plus 2 TB unless it is converted to a GPT disk.
  • Windows cannot start a GPT 'disc' unless it is installed on the active UEFI system.

  If the startup mode is set to BIOS, you're stuck - you will need to reinstall Windows with active UEFI or change the RAID configurations.

  What OS are we talking about?