Property of asm disk

Similar Questions

• the ASM disks can be in a different Partition for a database

  Hi all
  I have 2 datababase on the server. I save the data file on MDMDISK1 for the MDM and DWHDISK1 database to the DWH database.
  I can add/dev/sdd5, / dev/sdd6, / dev/sdd7 to DWHDG1 disk group to give more space to the DWH database.
  
  Table of Partition disk configuration
  Group name size GB ASM Disk Disk drive
  / dev/SDS (MON) 107
  / dev/sdd1 7 CRSDISK1
  / dev/sdd2 7 CRSDISK2
  / dev/SDS3 7 CRSDISK3
  / dev/SDS4 8
  / dev/sdd5 24
  / dev/SDD6 24
  / dev/sdd7 24
  / dev/sde (MON) 107
  / dev/SDE1 24 MDMDISK1 + MDMDG1
  / dev/SDE2 24 MDMDISK2
  / dev/SDE3 24 MDMDISK3
  / dev/sde4 24 MDMDISK4
  / dev/sdf (MON) 107
  / dev/SDF1 24 DWHDISK1 + DWHDG1
  / dev/sdf2 24 DWHDISK2
  / dev/SDF3 24 DWHDISK3
  / dev/sdf4 24 DWHDISK4

  user5846399 wrote:

  but I wanted insurance with people with experience as you go this drive on differnet LUN will not impede performance.

  A LUN is a logical unit - it may be a single physical disk. It may consists of 20 physical drives. If the LUN itself does not determine the performance. Performance is determined by the parts in movement under it.

  Multiple LUNS to the same diskgroup using or the volume of file system is a common practice. If this would be a problem (performance or otherwise) depends on the cloth under the LUN.

  For example, a logic unit number could be RAID5 and another logic unit number can be RAID0 + 1. Mixture of different RAID levels is not really a good idea.

  A LUN can be a storage on a San and accessible via the fiber channel. Another logic unit number could be an iScsi device, accessed through intellectual property. Mix very different storage architecture and storage protocols are not a good idea.

  A LUN can be RAID0, through fiber double channels connected to a switch, for the storage of 1 storage server. Another logic unit number can also be RAID0 and accessible through the same fiber channels and switch, but since the storage server 2. Whereby the RAID levels are the same and the storage Protocol and infrastructure the same - and that will not only make a compatible mix, but can actually increases the redundancy if you use these as disk mirrors ASM (which means that ASM can lose the server storage 1 or 2 and still works).

• os vs ASM disk size

  Hello

  When I compare the size of the operating system disks, each is 2.6 to.

  But when I look at ASM, they are 2 TB each.

  I'm reasonably sure, not 100%, I've created with external redundancy, so I thought the asm disks would be the same size as the operating system.

  fdisk -l
  data         /dev/sdb1      2627.4 GB        
  data2     /dev/sdg1        2627.4 GB        
  
  
  Name  REDUNDA MOUNT_S   TOTAL_MB    FREE_MB      OS_MB  
  ------------- ------- ---------- ---------- ---------- -
  DATA  UNKNOWN CACHED     2097144     842200    2097150  
  DATA  UNKNOWN CACHED     2097144     842392    2097150  
  

  Can someone explain this to me?

  Thank you

  Randy

  Version of grid Infrastructure?  ASM has limit GI version< 11.2="" on="" maximum="" size="" of="" luns="" (2tb)="" that="" can="" be="" used="" for="" asm="">

  https://jonathanlewis.WordPress.com/2009/08/14/Tera-bug/

• 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

• Not see asm disks when installing network

  Hi all.

  I have install oracle database rac on RHEL 5.5 11.2.0.4.

  When I install the oracle grid, grid can't see the disks asm (oracleasm listdisk work)

  [installation root@webcenter-db01] # oracleasm listdisks

  CRS1

  CRS2

  CRS3

  DATA1

  DATA2

  REDO1

  REDO2

  REDO3

  But install grid 11.2.0.1, grid see all asm disks.

  I don't know why.

  Thanks for your help

  
  

  Hoan.
  

  Hello 1026384,

  If disks are displayed in the list during installation of the network infrastructure, then try to give the /dev/oracleasm/discs / * in the window change the disk discovery trail .

  Thank you best regards &,.

  DAS Pinto

• Resync ASM disk in 12 c

  Hello

  Please can someone tell what is the difference between ASM resynchronization and consolidation of disk drive?

  Are they different? If so, what is re-synchronization happens and when to rebalance?

  Thank you

  Fast ASM disk Resync is used to recovery failure a failure to make temporarily unavailable group is considered transient failures.

  As the disconnection of the cable, controller failures or interruptions of supply disk or host bus adapter current.

  You just put a time (duration) where ASM Diskgroup will be to track all the changes up to recover this failure. If records are retrieved using the last State when, down disc Resync then update all the blocks on the disk recovered from survive failgroup.

  If drive failure is not picked up within the window of time, records are automatically removed from the diskgroup.

  The process of adding these drive broke diskgroup start the rebalancing process.

  Resynchronization occurs when updating the out-of-sync disk track.

  Rebalancing occurs when data are not balanced or when to add new disc on diskgroup.

• ASM disk HEADER_STATU is a CANDIDATE

  Hello

  One of my own DB running in ASM, 11.2.0.3 shows his HEADER_STATU as a CANDIDATE , but the database is up and running without any problems,

  PATH OF FREE_MB/1024 TOTAL_MB/1024 HEADER_STATU

  NAME

  ------------ ------------- ------------ ------------------------------ ------------------------------

  CANDIDATE

  50 45.1367188/dev/raw/raw12

  PUSH_0000

  When checked ASMCMD he said size 0

  State

  Type

  Power supply rebal

  To THE Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files name

  EXTERN MOUNTED N

  512 4096 1048576

  0

  0

  0

  0

  0

  N PUSH /.

  I checked the alert logs, and I don't see any errors.

  How to solve this problem? I suspect asm disk header is maybe damaged. a kfed repair can they?

  Disc in UA 1 header penultimate block shows up as a member, so you can use kfed repair to recover.

  KFed repair/dev/raw/raw12

• Antivirus with ASM disk considerations

  Hi all

  We are currently running Oracle 10 g on Windows Server 2008 R2 using file storage system.  We seek to upgrade to 11g and use of ASM disks rather than the file system.  I am aware that there are many considerations here, but I have been asked specifically about how RAW disks and our antivirus will interact.  For the moment, we use the Center Endpoint Protection system on the database server, and then exclude us certain types of files associated with Oracle (DBF, CTL etc.).  This configuration meets the DBA and infrastructure.  Once we start using ASM if, something will have to change because we will not be able to exclude specific file types.

  I would be interested in advice / opinion that anyone was around that.  More precisely:

  1. is it possible for a disc of ASM to be infected by a virus?

  2. the AV software is even capable of preventing infections on ASM disks? (maybe its not relevant according to the answer to the first question)

  3. we are likely to see some performance issues with AV software running on our database server, because the current set up described above works fine but is replaced by ASM disks?

  Any help or advice welcome

  Thank you

  Andrew

  Disc GROSS means that there is no file system. No virus software can analyze the volumes of the ASM, which can only be used by an Oracle database and what data structure is known only for Oracle. Unless you install any ACF volume, which allows the storage of ASM data that can be accessed by the operating system, software Anti Virus cannot analyze data.

  However, the Anti Virus software can interfere with e/s of Oracle applications, which you will certainly not want and that has really no sense. Unfortunately, any installation which is connected to the Internet without any protection against the malware running MS Windows is a suicide. To be honest, I never want to install and run the Oracle database on a MS-Windows Server and see no valid reason for it. There are much better alternatives, such as Oracle Linux, which is also free.

• Installation of Oracle 11 g R2 grid does not detect the ASM disks

  Hi guys,.

  I'm trying to install Oracle 11 g R2 RAC and as part of the installation of the grid, the Setup program does not detect the ASM disks.

  Here are the outputs for some commands.

  [root@rac1 ~] # oracleasm scandisks

  Reload from disk partitions: fact

  Cleaning up stale ASM disks...

  ASM disks scanning system...

  Instantiation of disk 'ASMDATA2 '.

  Instantiation of disk 'ASMDATA1 '.

  [root@rac1 ~] # oracleasm listdisks

  ASMDATA1

  ASMDATA2

  [root@rac1 ~] # ls - ls/dev/oracleasm/disks

  Total 0

  0 brw - rw - 1 grid asmadmin 252, 3 14 May 17:18 ASMDATA1

  0 brw - rw - 1 grid asmadmin 252, 2 14 May 17:18 ASMDATA2

  I already tried to reconfigure Oracleasm (oracleasm configure - i) but no luck.

  I would be really grateful for the help here as its been a few days now and want to complete the installation as soon as possible

  Concerning

  Praveen

  Thank you Ricardo, I see now the disks after you change the path from discovery to/dev/oracleasm/disks

  

• Analyze the index on the machine of Dataguard and redundancy of ASM disks

  Dear friends,

  I have two questions regarding disc Dataguard and ASM.

  (> > 1) for best performance, periodically, we rebuild the index index and analysis analyze table. What is the best periodic steps to do to get better performance?

  I mean, first of all is rebuilding of index, is second index analysis and so on......

  (> > 2) if I run analyze the index or the table on my PRODUCTION system he replicated this effect on statndby dataguard automatic system? If so, how it is replicated?

  (> > 3) my last question related with high redundancy of the ASM disk. I have some confusion on this area.

  Let's say I have 10 disks in a diskgroup '+ DATA' and I did 'HIGH' level redundancy, means 3 way redundancy. Here I know 3-way the redundancy, it writes data on 3 discs at a time. But what of the other 7 discs. In fact, I need to know the mechanism of writing?

  -Each disc is identical to the other drive?

  -For HIGH redundancy, how many disk failure can be tolerated for any loss of data?

  Waiting for your kind reply......

  "on my PRODUCTION'---> you mean"on my FIRST.

  Yes, the data dictionary is updated when you run dbms_stats.gather% and updates data dictionary are through recovery that applies to the WAITING for more.

  NOLOGGING surgery would not be applied to the expectation (the index would be marked corrupted to the standby) unless you have set on FORCELOGGING.

  Hemant K Collette

• RunInstall does not show the ASM disks

  Hello

  I googled arleady for so long but I can't find the solution for my problem.

  I'm under runInstall of the Oracle Grid Infrastructure installation program. When it comes to "Create the ASM disk groups", the window does not show one of my starts created previously, even if I change the discovery trail to ' / oracleasm/dev/discs / * "Please help!

  [dev root@grid1] # / usr/sbin/oracleasm listdisks

  DATA01

  DATA02

  FRA01

  FRA02

  OCRVOTE01

  OCRVOTE02

  OCRVOTE03

  [dev root@grid1] # / usr/sbin/oracleasm-discover

  ASMLib /opt/oracle/extapi/64/asm/orcl/1/libasm.so using

  [Library ASM - Generic Linux, version 2.0.4 (KABI_V2)]

  Disk discovery: ORCL:DATA01 [31455232 blocks (16105078784 bytes), maxio 512]

  Disk discovery: ORCL:DATA02 [31455232 blocks (16105078784 bytes), maxio 512]

  Disk discovery: ORCL:FRA01 [20969472 blocks (10736369664 bytes), maxio 512]

  Disk discovery: ORCL:FRA02 [20969472 blocks (10736369664 bytes), maxio 512]

  Disk discovery: ORCL:OCRVOTE01 [10477194 blocks (5364323328 bytes), maxio 512]

  Disk discovery: ORCL:OCRVOTE02 [10483712 blocks (5367660544 bytes), maxio 512]

  Disk discovery: ORCL:OCRVOTE03 [10483712 blocks (5367660544 bytes), maxio 512]

  [dev root@grid1] # / usr/sbin/oracleasm querydisk DATA01

  Disk 'DATA01' is a valid ASM disk

  [records root@grid1] # pwd

  / dev/oracleasm/Disks

  [records root@grid1] # he's

  Total 0

  BRW - rw - 1 grid asmadmin 8, 65 4 Mar 11:18 DATA01

  BRW - rw - 1 grid asmadmin 8, 81-4 Mar 11:18 DATA02

  BRW - rw - 1 grid asmadmin 8, 97-4 Mar 11:18 FRA01

  BRW - rw - 1 grid asmadmin 8, 113 4 Mar 11:18 FRA02

  BRW - rw - 1 grid asmadmin 8, 17 4 Mar 11:16 OCRVOTE01

  BRW - rw - 1 grid asmadmin 8, 33-4 Mar 11:17 OCRVOTE02

  BRW - rw - 1 grid asmadmin 8, 49-4 Mar 11:17 OCRVOTE03

  [records root@grid1] # rpm - qa | grep oracle

  oracleasm-support - 2.1.8 - 1.el6.x86_64

  oracleasmlib - 2.0.4 - 1.el6.x86_64

  oraclelinux-release-6Server - 6.0.2.x86_64

  oraclelinux-release-notes-6Server - 14.x86_64

  kmod-oracleasm - 2.0.8 - 4.el6_6.x86_64

  Oracle-logos - 60.0.14 - 1.0.2.el6.noarch

  to clarify this, please login as user "grid" and run the command
       id

  This will show you if id is a member of the Group asmadmin.

  Martin

• Adding a device to ASM disk using asmtool

  Hello

  I create ASM disks.

  Background: Oracle enterprise linux 6. I'd partition the shared disks (SCSi) during the installation of Linux (don't know what to do, I just did).

  Now if I run oracleasm createdisk, it is said that the devices are busy. No, I removed the mounts of the devices in/etc/fstab. Now createdisk said that "the device is not a partition. Now I use asmtool command instead:

  / usr/sbin/asmtool - c-l/dev/oracleasm n OCRVOTE s/dev/sdc - a force = yes

  That works fine, but I need to add more then one device to drive OCRVOTE. If I do

  / usr/sbin/asmtool - c-l/dev/oracleasm n OCRVOTE s/dev/sdd - force = yes

  It is said: asmtool: unable to create 'OCRVOTE' ASM disk: file exists

  Hello

  You're basically labelling records at the level of the BONE.

  This name must be unique.

  You must give the label name different labelling while.

  / usr/sbin/asmtool - c-l/dev/oracleasm - n OCRVOTE1 s/dev/SDS - a force = yes

  Then use ASM diskgroup in the future.

  Kind regards

  Loriette

• Unlike used MB of available space in the ASM disk between primary and standby database group

  Hi all

  We are seeing a difference in ASM disk group DATA1 USED_MB between elementary school a Standby.Its an AAM.4 node RAC

  Primary

  -------

  NAME                              TOTAL USED GB FREE GB REQUIRED FREE GB USABLE % USABLE free of CHARGE (GB)

  ------------------------------ ------------ ------------ ------------ ---------------- ---------------- --------------

  Data1 141 534 66 082 75 452 15 726 42.0 59 726

  DATA_XDP501 17 766 11 635 6 131 2 538 3 593 20.0

  Standby

  NAME                              TOTAL USED GB FREE GB REQUIRED FREE GB USABLE % USABLE FREE (GB)

  ------------------------------ ------------ ------------ ------------ ---------------- ---------------- --------------

  Data1 141 534 57 059 84 475 15 726 68 749 49.0

  DATA_XDP801 17 766 11 781 5 985 2 538 3 447 19.0

  Mode standby is runnig like

  OPEN_MODE

  --------------------

  READ ONLY TO APPLY

  Some body give an overview on what could be the purpose or specific controls will help

  Thank you

  Soundar.M

  Hello

  You can run sql in below document ASM sqlplus.

  Then, you will come to know which files are files of redundent on ASM diskgroup.

  HOW to map ASM FILES WITH FILES of DATABASE ONLINE (Doc ID 552082.1)

  Delete these additional level of the DSO files, then validate.

  Kind regards
  Loriette

• ASM disk added without scan on the second node

  Hi all

  Oracle Version: 11.2.0.3

  I need a help for a problem with the addition of ASM disks.

  It is a node two CARS and a disk group was filled.

  A drive was available as UNUSED001 and so we renamed it ran scan disk and disk added to the diskgroup on node1.

  But, as we have not run scan disk on the second node, the name is still the poster as UNUSED001 and assigned to diskgroup showing as a MEMBER.

  In addition, the renamed disk shows as a MEMBER but not attributed with any diskgroup.

  Usually, when this heppens we have to restart the node to solve the problem, but would like to get idea if this can be fixed without bouncing nodes.

  I restarted node and that fixed the issue.

  Closing this thread.

  Thank you guys.

• file data and the ASM disks.

  Hi experts,

  We have a situation where one of the data file has been corrupted. Can we find the related ASM disk... no request to find that the drive associated with asm (physical disk) will be useful...

  because for example I need to find the disk related asm for the data file: +disk_group_1/my_dir/my_file.dbf

  Kind regards

  Spengler

  Hi Spengler,

  In ASM we saw exactly the same as database.

  What you do is,

  Your file "+ disk_group_1/my_dir/my_file.dbf" is an alias, so go to this directory through asmcmd and ls - lt and get the original physical file named ..

  + Now check where the distribution of the is distributed for this file.

  To do this, run the command UESA (read-only)

  UESA - diskstring ''-'' dump - noimage

  This will generate a new directory.

  on the inside you will see 2 files.

  + Now open the .map file and find this filenumber, it is like F00000NNN

  Where NNN corresponds to file_number

  + See related disc of the map as N00n file, then look for this file report.txt N00n.

  -This will give you disc associated with this asm file.

  Kind regards
  Loriette