ASM and mirroring

Similar Questions

• Stripping and mirroring in ASM

  Hi all;

  I have a fundamental confusion of ASM.

  Consider that I have an A diskgroup (it contains 3 discs)

  I want to write data of the ABC in A diskgroup.

  Option 1:

  [A]   [B]  [C]| -> stripping happens here.

  Option 2:

  [ABC]   [ABC]  [ABC]-> mirrored two ways that happens here.

  ASM does support stripping and mirroring at the same time?

  Hello

  In the first option that you described, there no mirroring at all. This is the scenario when you define a group of ASM disks with external redundancy (external = do not use ASM mirroring, for example when you configure hardware RAID for redundancy). In this case it will be only interlacing (assuming you have more than 1 asm disk).

  ASM spreads data evenly across all disks in a disk group to optimize the performance and usage. This even distribution of data files eliminates the need for a regular monitoring and optimizing the performance of I/O. You can learn more about interlacing here: https://docs.oracle.com/database/121/OSTMG/GUID-114A8CA6-D757-4A70-9F68-C5133724D7BB.htm

  In the second option, you described a 3 - way mirroring (high redundancy) and 2-way no mirroring (Normal Reundncay) which means you have 3 groups of failure. Read here for more info on the mirror and failure groups implementation: https://docs.oracle.com/cd/B28359_01/server.111/b31107/asmcon.htm#BABHBHIE

  ASM does support stripping and mirroring at the same time?

  The answer is certainly yes. In the image below, for example, you can see an example of asm high redundnacy (3 - way mirroring) disk group, so it has 3 groups of failure.

  Each failure Group 2 discs. ASM spreads data evenly on these discs.

  

• ASM and SCAN listener running of the Oracle user not user network

  Hi all

  Greetings for the day!

  In one of my new customer environment, I see that ASM and SCAN are running oracle user not user network, although the ORACLE_HOME is on the grid software. I read somewhere that we should run ASM and SCAN from grid not Oracle. Please let me know if I'm right and if there are consequences of the performer of the Oracle user.

  OS: Red Hat Enterprise Linux Server 6.5 (Santiago) 64-bit release

  Oracle RDBMS: 11204

  Oracle GI: 11204

  CAR Info: 2 node cluster.

  Thank you very much.

  AbbDBA

  The important word is expected here. It is suggested that 11.2, that the separation of roles, a non-oracle account must be used for the GI. But this is not essential, and certainly not wrong to use Oracle db and IM account as long as you do not use ASM according to security features. So nothing to worry about. You're good.

  Aman...

• We require two headphones. It is listnener of ASM and listnener in oracle DB restart

  Hello

  I have a few question about oracle restart.

  (1) claims we two headphones. It is listnener of ASM and DB listnener If yes why and if no why?

  (2) if we add the OHASD components, we restart services?

  
  

  Thanks a lot for giving me clarity on ASM and auditor of the DB.

• The problem of Script root.sh - ora.asm and ASM and Clusterware battery failed

  People,
  
  Hello. I want to install Oracle 11 g RAC 2 using 2 VMs (rac1 and rac2) whose BONES are Oracle Linux 5.6 in VMPlayer according to the website http://appsdbaworkshop.blogspot.com/2011/10/11gr2-rac-on-linux-56-using-vmware.html
  
  I'm installing network infrastructure. On step 9/10 - run script /u01/app/grid/root.sh for 2 virtual rac1 and rac2 machines.
  
  After running root.sh rac1 successfully. I run root.sh in rac2 and get an error like below:
  
  
  
  [grid root@rac2] #./root.sh
  Run the script root.sh from Oracle 11 g...
  
  The following environment variables are defined as:
  ORACLE_OWNER = ora11g
  ORACLE_HOME = / u01/app/grid
  
  Enter the full path of the local bin directory: [usr/local/bin]: usr
  Copying dbhome to usr...
  Copying oraenv to usr...
  Copying coraenv to usr...
  
  
  Creating/etc/oratab file...
  Entries will be added to the/etc/oratab file according to the needs of
  Assistant configuration database when a database is created
  Finished to turn the generic part of the root.sh script.
  Now root product-specific actions will be performed.
  2012-03-05 16:32:52: analyzing the host name
  2012-03-05 16:32:52: verification of superuser privileges
  2012-03-05 16:32:52: user has superuser privileges
  Using the configuration settings file: / u01/app/grid/src/install/crsconfig_params
  Create the trace directory
  ADD LOCAL MODE
  Creating OCR keys for the user "root", "root"... privgrp
  Successful operation.
  Adding to inittab demon
  CRS-4123: Oracle high availability Services started.
  starts ohasd
  CRS-4402: the CSS daemon has been started in mode exclusive, but found a CSS daemon that is active on node rac1, number 1 and ends
  An active cluster was found at the exclusive start, start to join the cluster
  CRS-2672: attempt to start 'ora.mdnsd' on 'rac2.
  CRS-2676: beginning of "ora.mdnsd", the successful "rac2"
  CRS-2672: attempt to start 'ora.gipcd' on 'rac2.
  CRS-2676: beginning of "ora.gipcd", the successful "rac2"
  CRS-2672: attempt to start 'ora.gpnpd' on 'rac2.
  CRS-2676: beginning of "ora.gpnpd", the successful "rac2"
  CRS-2672: attempt to start 'ora.cssdmonitor' on 'rac2.
  CRS-2676: beginning of "ora.cssdmonitor", the successful "rac2"
  CRS-2672: attempt to start 'ora.cssd' on 'rac2.
  CRS-2672: attempt to start 'ora.diskmon' on 'rac2.
  CRS-2676: beginning of "ora.diskmon", the successful "rac2"
  CRS-2676: beginning of "ora.cssd", the successful "rac2"
  CRS-2672: attempt to start 'ora.ctssd' on 'rac2.
  Start action for octssd abandoned
  CRS-2676: beginning of "ora.ctssd", the successful "rac2"
  CRS-2672: attempt to start 'ora.drivers.acfs' on 'rac2.
  CRS-2672: attempt to start 'ora.asm' on 'rac2.
  CRS-2676: beginning of the 'ora.drivers.acfs' on 'rac2' succeeded
  CRS-2676: beginning of "ora.asm", the successful "rac2"
  CRS-2664: resource 'ora.ctssd' is already running on "rac2.
  CRS-4000: Start command has failed, or completed with errors.
  Return code of 1 (256) of control: / u01/app/grid/bin/crsctl start resource ora.asm - init
  Beginning of the resource ' ora.asm - init ' failed
  Could not start ASM
  The Oracle Clusterware boot failure battery
  [grid root@rac2] #.
  
  
  
  As seen above, the output at the end of the exit
  (1) beginning of resource ora.asm - init failed
  (2) could start ASM
  (3) could start Oracle Clusterware battery
  
  The runInstaller is in the first VM rac1. My question is:
  
  Any folk that understand how to solve the root.sh script in problem rac2 (3 fails to ora.asm, ASM and Clusterware battery as stated above)?
  
  
  Thank you.

  Please check there is no firewall don't exist:

  Try this as:
  root.sh fails on the second node

  Note MOS:

  Grid 11 GR 2: root.sh fails to start the Clusterware on the second node due to the firewall on the private network [981357.1 ID]

  Infrastructure 11.2.0.2 grid or upgrade installation may fail because of the requirement of multicast [1212703.1 ID] (most probabily this problem)

• ASM and DB on another machine

  Hello
  
  Have a question, we are given 2 VM on which ASM and Oracle DB is installed. We are invited to start the two machine in order, after the start-up of the Machine-1, start the Machine-2 and then only DB (orcl) on Machine-2 can be opened.
  
  If we lack sequence he gives are not launched and gives error as:
  
  SQL > startup;
  ORA-01078: failure in the treatment of system settings
  ORA-01565: error in the identification of file "+ DATA/orcl/spfileorcl.ora".
  ORA-17503: ksfdopn:2 could not open the file +DATA/orcl/spfileorcl.ora
  ORA-29701: unable to connect to the Cluster Synchronization Service
  
  The initorcl.ora on Machine-2 has after the entry:
  
  SPFile='+Data/ORCL/spfileorcl.ora'
  
  Please can anyone suggest how this two machines would be set up, what the entries on Machine-2 point to instance ASM to Machine-1.
  
  Please suggest...
  
  Thank you!

  bLaK says:
  Thanks for the reply HTH!

  I'm new on this point and learn ASM. I wanted to know is how and what setting are Machine-2 it refers to the instance of the ASM to Machine-1.
  Where I see that?

  Kind regards!

  What is your basis for data & ASM version?
  Do you use the grid?
  My first explanation of the post is specific to any ASM & RDBMS instance on server.

  Describe how these two servers configured.

  You can check in
  $crsctl check cssd

  Or say how can we say CSS service where the ASM instance is located...

  It will be managed by the CSSD process.

  Read this manual http://www.oracle.com/technetwork/database/asm-10gr2-bestpractices.pdf

  Given that CSS provides the management of cluster and node monitor, it monitors intrinsically ASM and
  its shared storage components (disks and starts). At startup, ASM will record himself and all
  starts, it has mounted, with CSS. This allows CSS on all RAC nodes to keep metadata diskgroup
  synchronized. Everything starts new that is created is also dynamically registered and disseminated to others
  nodes in the cluster.
  As for the database, the internode communication is used to synchronize the activities in the ASM instances. CSS is
  used for heart rate integrity of ASM instances. Internode ASM messages are initiated by structural
  changes that require a synchronization; adding such a disc. Thus, ASM uses the same integrated lock
  management infrastructure that is used by the database for efficient synchronization.

• tests of the device for the time of the ASM and Network Protocol (NTP)

  Hi all.
  I try to install Infratruction grid Oracle 11 g R2 amd oracle Linux OS but
  I got the following error.
  
  tests of the device for the time of the ASM and Network Protocol (NTP)
  can someone guide me what should I do for them?

  in RAC 11 GR 2, the option to synchronize the time between the nodes are ntp or ctss.

  If you want to use ntp add the - x option in/etc/sysconfig/ntpd (for example OPTIONS = "-u ntp:ntp Pei /var/run/ntpd.pid x")

  Hope this helps

• 11G with ASM and RDBMS problem when the server reboot (dependencies)

  Hello
  
  I just install the new version 11G with ASM for the first time. When I restart my server, RDBMS start before the ASM service isn't over to start. It's like when the care services, CSS and EVM have been replaced by the OH dependencies have been lost. The OH service is started but it's as if he is not optional and others start immediately (ASM and RDBMS).
  
  Early restart, I see the OHservice started and the DSO after that (on the road), but when the RDBMS starts the instance handle of stay (inactive and not mount) because unit number logic for the catalog of service is not available yet. I see in the alert.log to RDBMS catalog segment is not found or not existing (/ catalog not nfound).
  
  If I wait about 3 to 5 minutes and restart only the RDMBS all start without problem.
  
  Is there a way I can adjust the stop with the 11g version service or use the crsctl to indicate to the RDBMS service start only when all the ASM service (MON) segment are mount?
  
  Thank you

  Normally the database is started by the clusterware and not by the windows service.

  Thus, there could be 2 ways to do this:
  (a.), try to assign the Windows of the database service to manual. It must be started by clusterware.

  If that doesn't work, try this:

  (b) leaving the service to automatic startup (Windows), but disable the automatic start of the database. This you can normally change in the registry
  -Online-online Oracle-online key HKLM => ORACLE__AUTOSTART
  (not 100% sure on the key, but I'm sure that you'll be able to find it.)

  Unfortunately do not have atm WindowsCluster to try it myself.

  Additional please check if your db instance has the correct dependencies defined in the clusterware.
  Make one

  stat ora res crsctl. .db Pei

  and paste it here.

  So good luck...
  Sebastian

• ASM and table partitioning

  Hi gurus,
  a level of table colleague told me of partitioning is not necessary if the DSO is in place, the ASM can manage etc load balancing
  
  your expert opinion please...
  
  Thanks in advance,
  Charles

  Sorry, it's not true. ASM and partitioning are not related.

  ASM allows to balance the blocks for a table or an index on multiple disks, which can improve the IO.
  Split a table or index into small pieces to reduce the number of blocks that need to be analyzed and partitions allow parallelism.

  Even if you use ASM, you can benefit from partitioning of tables (but this is a design decision based on your data and queries that you run)

• Console ASM and oem

  I just installed an instance asm and database, I use oracle 10g. When I go in the console I see only the tabs tipical (reception, administration, performance, and maintenance). My question is how can I see the asm tab to manage console asm?

  On the Home tab next to the green arrow, there are a few links. One of them should be link to ASM. Until it clicks.

  Bartek

• Distribution of ASM and disk required

  If I use the external RAID 1, the minimum disks required are two. Now
  If I combine the DSO (interleaving) and external RAID 1 (mirroring only), how many records to a minimum is necessary to achieve the purpose of distribution of ASM + RAID 1 mirror writing? OR, another way, implement WITHOUT Raid on disks, instead, let the ASM mirror and strip, in this case, what are the minimum number of disks must be used?
  
  
  Thank you
  
  Scott

  If you want to mirror and scratch using asm, then you must use at least 4 disks.

  Check this: http://url4u.co/15FTGm

• Skype, Apple TV and mirror

  My Apple TV mirroring works very well with everything, except Skype. I see all my contacts on my TV screen, I can still see the call through but as soon as they respond it is de-energized. The Skype connection is still ok on my iPad. I've updated all my software, but nothing seems to work for me. Ive seen this works well for other people, so I know it is compatible. Any help / advice appreciated!

  It does the same thing for me. iPad3 and last updated Apple TV V3.

  Fine mirrors until when the contact accepts the call, then the TV goes back to the Apple TV menu.

  BUT in this case it starts working again. When the appeal was allowed and the TV will go back in the Apple TV menu, then make up the menu of mirroring on the iPad AGAIN and start once AGAIN mirroring. When you do that, you will see your interlocutor on the TV.

  Do not know what is happening. Obviously Skype does not correctly supports good video mode full-screen Apple TV, but why he drop out of the mirroring?

  Let us know if this fix works for you.

  Bob

• a matrix of reversal and mirroring

  Hello everyone,

  even rusty on the good old LabVIEW...

  I need a matrix to mirror and rotation (transpose) he 270' deg...

  OK, the conversion can be solved, but you can help me with mirroring of the matrix?

  concerning

  Edoardo

  Here is a collection of transformation of a recent discussion. Of course, this will work with any data type.

  

• HP OfficeJet Pro 8500 first print and mirror for treadmill mouse and t shirt

  HP OfficeJet Pro 8500 first concerns.  I tried to figure out where the printer setting is for printing in mirror.  It is usually in the Advanced Settings tab.  I called HP and was told by 2 different tech, then supervisor that HP does not include this option in this printer.  I tried to explain how I felt it was hard to believe and I was told that it is most likely was an option that was no longer necessary.  I have his name and the file number.  I asked this bump up the level immediately above, because I felt strongly HP has not intentionaly left this option.  I digress.

  Can anyone suggest anything.

  Thank you

  Joe

  Thank you all

  Got it to work.

  990 has not worked, 5600 had mirror but does not print correctly.

  I went to the HP site and downloaded different drivers until I could get to work.

  Thanks again

  Joe

• I want to reformat my drive D: and mirror then my C: drive. How can I do this?

  My Dell E510 has a mirror of the main C: drive and D: drive backup I want to reformat. How can I do this? Note: Drive D: 'properties' shows only 18 GB of capacity, but physical drive Specifies a size of 80 GB. What's up with that?

  Why are you wish to copy the entire external drive, only the data or files downloaded installation can be transferred to your new PC, the windows folder structure / will be of little use to you and cannot be transferred to your new PC. Niether can clone you your existing installation to your new PC, it won't work.