Standby,RAC,Clone DB

Hiiii All,
Can any body tell me what's the difference between Standby DB,Real Application Clusters and Clone DB???????????

Hi.
Standby DB is a HA solution where one database can have up to nine standby databases. The master database shuffles redo to the standby database where data is applied and the standby database is kept up to date. In case of a problem with the master, the standby can take over. The most importent issue here, regarding your question is that we have to physical databases.
RAC is simply two or more instances that shares a physical database. The database is accessible throug two or more instances which has it own set og SGA/PGA and backgroundprocesses. Using services with RAC, enables you to implement active-active or active-passive. Independent of what you choose, the physical storage is the hotspot, and off course a single point of failure.
Clone DB is simply to take all datafiles from one database, move them to another server or another location and open the database. I think RMAN can clone the database for you or you can clone any database yourself with copy command.
Hopes this clarifies some.
Anyone else??
rgds
Kjell

Similar Messages

RAC to RAC CLONE FROM RMAN Cold Backup

Hi All,
I need your kind assistance in Cloning my Oracle RAC 11.2.0.2 Environment to remote host. Following is Disk layout
DGVOT (ASM Disk group holding OCR and Voting Disk)
DGDATA (ASM Disk Group Holding Data FIles)
DGFRA (ASM Disk Group Holding Fast Recovery FIles)
Remote Host is on different location so cannot use RMAN duplicate with auxiliary channel.
Have luxury of downtime so I want to take RMAN Consistent( Cold Backup)
SAME Disk layout is available to remote hosts.
11.2.0.2 CLusterware (GI) Plus the oracle binaries are already installed.
Can any body tell me the steps to
1) How to take cold backup to disk so that I can tar and copy to remote host
2) clone the database on remote host
3) How i will add the database listener and other resources of this databasee to clusterware.
actually this is my first RAC clone so i am not much aware of detail steps.
I have gone though many metalink notes but no one is matching with my requirements. your expert advice will help me a lot
Regards,

Hi
1) How to take cold backup to disk so that I can tar and copy to remote host.
Use Rman for cold backupIn mount stage execute
RMAN>backup database plus archivelog format '<disk_path>/dbp%U';
RMAN> backup current controlfile format '<disk_path>/ctl%U';
Copy thse backup sets to remote host
2) clone the database on remote host
Create Similar ASM Disk groups as on source
create pfile/spifile, startup instance in nomount mode
catalog backup set
RMAN> catalog start with '<backup_set location>';
Restore controlfile
RMAN>restore controlfile;
RMAN> restore database;
RMAN> recover database;
On successfull recovery
RMAN>sql 'alter database open';
3) How i will add the database listener and other resources of this databasee to clusterware.
User srvctl to add resources
Usage: srvctl <command> <object> [<options>]
commands: enable|disable|start|stop|relocate|status|add|remove|modify|getenv|setenv|unsetenv|config|convert|upgrade
objects: database|instance|service|nodeapps|vip|network|asm|diskgroup|listener|srvpool|server|scan|scan_listener|oc4j|home|filesystem|gns|cvu
For detailed help on each command and object and its options use:
srvctl <command> -h or
srvctl <command> <object> -h
Thanks,
Ajay More

RAC clone from PROD to DEV

HI,
I wanted to know what would be the steps to clone a RAC database instance to another RAC database instance, in this case PROD RAC to DEV RAC? Are there any docs out there?
Thanks in advance

The steps are no different to clone a single instance db.
With Oracle 11g there are 2 nice new feature in Enterprise Edition which makes creation and maintaining of a development system faster and easier:
=> Use RMAN Duplicate to clone a DB without the need of a backup location
=> Use DataGuard Snapshot Standby. This allows you to open the Standby DB for development (e.g. over the day) and resync it with production (e.g. at night). This reduces the need to do the cloning every time again.
See: http://www.oracle.com/technology/deploy/availability/pdf/twp_dataguard_11gr1.pdf
Regarding Pre Oracle 11:
Cloning of the DB can also be done via. RMAN duplicate (see documentation), but you will need additional space to store the backup.
See Oracle® Database Backup and Recovery Advanced User's Guide 10g Release 2 (10.2) under RMAN Duplicate.
Furthermore in GridControl there is a nice GUI to do this.
Hope thats helps a little
Regards
Sebastian

Shared FRA disk between Primary and Standby RAC

Hello all,
I need some clarification. Can a ASM +FRADG shared between RAC 2 nodes 11gR2 Primary and RAC 2 nodes 11gR2 Physical Standby Database in order to use it for backup and recovery on both databases.
Thank you.

Hi,
If you are looking this document:
http://docs.oracle.com/cd/E11882_01/server.112/e18951/asmcon.htm#OSTMG94055
Then I understand it that you can use ASM diskgroups only inside same Oracle Clusterware.
So if you have two separate RAC clusters (two separate Oracle Clusterware) then you cannot share ASM between those.
And I don't think it would be wise even if it would be possible.
This is because if one database will fill up your FRA disks then both RAC databases are hold (if you are putting your archivelogs in the FRA).
Also disk/diskgroup maintenance jobs might be difficult in that kind of configuration.

DG - creating physical standby using clone VMbox

Hi,
I have a VMbox 11.2.0.2 database prebuilt from "Oracle Developer Days".
Then I clone it as "Oracle Developer Days Clone".
Since they are now identical, How can I make the clone as my standby DB?
Can I mount it as standby?
Thanks,
Petra-K

Add to listerner.ora
SID_LIST_LISTENER =
(SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_2)
      (PROGRAM = extproc)
    (SID_DESC =
      (GLOBAL_DBNAME = orcl_stby)
      (ORACLE_HOME =/u01/app/oracle/product/11.2.0/dbhome_2)
      (SID_NAME = orcl_stby)
GLOBAL_DBNAME will service name of standby database.
Regards
Mahir M. Quluzade

RAC clone

Hi,
Does anybody have steps of cloning RAC instnce with oracle apps either 11i or R12.
1. Single node
2. multinode
Appreciate your help.
Regards
H

Hi,
Refer to:
Note: 783188.1 - Certified RAC Scenarios for E-Business Suite Cloning
Note: 799735.1 - Rapid Clone Documentation Resources, Release 11i and 12
Regards,
Hussein

Non RAC to RAC clonning

Hi all.
I have installed EBS in OEL5 OS, and database 10g R2 pachset 3.I have database and apps server in the same machine.
Is it possible using rapid clone to go to RAC?
Is there any doc or a road map for doing this?
Thanks in advance
Soni

Soni,
Use Rapid Clone. For more details, please refer to the following document.
Note: 799735.1 - Rapid Clone Documentation Resources, Release 11i and 12
https://metalink2.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=799735.1
Note: 783188.1 - Certified RAC Scenarios for E-Business Suite Cloning
https://metalink2.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=783188.1
Regards,
Hussein

Add datafile dataguard from physical RAC to standby RAC

Hello we have a 3 node cluster RAC 10g on the primary and RAC 10g on the standby.We use as db storage ASM wich is configured over raw devices and file management omf.The same groups DATA and FRA on both servers.STANDBY_FILE_MANAGEMENT is manual.
We need to add a datafile on the primary safely.Can you offer me some ideeas?
Thank you!

Hello;
Change STANDBY_FILE_MANAGEMENT to "auto" before you add the file and then leave it set to "auto". ( set this to AUTO on both Primary and Standby )
STANDBY_FILE_MANAGEMENT enables or disables automatic standby file management.
If you leave it set to MANUAL you may create unwanted file in $ORACLE_HOME/dbs and cause issues with the MRP process.
Best Regards
mseberg
Edited by: mseberg on Jun 7, 2013 9:02 AM

11gR2 2-node Primary RAC / 2-node Standby RAC setup

My current setup is my Primary is a 2 node RAC, while my standby is a single instance standby. I need to convert the standby to a 2 node RAC. Has anyone have any experience for this? I have completed setting up oracle binaries for ASM/GRID on the supposed 2nd node standby. Any help would be greatly appreciated.
Thanks
Dexter

Check this out:
http://zakkiahmed.wordpress.com/2010/08/04/convert-11gr2-non-rac-database-to-rac -database-using-rconfig/

Start mount 2nd standby RAC instance got controlfile header error

start mount

I created the standby controlfile from the primary database, scp the controlfile to both standby nodes, and modified init file to include those controlfiles.I would recreate the control file and scp it again. But instead of changing your spfile, rename the copies to match your spfile.
If you have to recreate the spfile from a pfile copy.
OERR: ORA 203 using the wrong control files [ID 18288.1]
ALTER DATABASE CREATE STANDBY CONTROLFILE AS '/u01/app/11.2.0/standbycontrolfilename.ctl' REUSE;Cooper

Snapshot standby database in oracle 11g r2 RAC

Folks,
i am just wondering if the process is same for standalone and RAC snapshot standby database.
We have a DR test
1 / I just converted the standalone DR on 11g to snapshot standby database for users to do some testing and reverted back to physical standby after test was done. i folllowed metalink note ID 443720.1
2/ now there is anotherDR test where we have 2 node prod and 2 node DR on oracle 11g rel2 RAC, so not sure we can follow the same process that i used for 11g standalone database. If somebody have done this on RAC, would you please provide the steps ?
Thanks in advance
SQL> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
PL/SQL Release 11.2.0.1.0 - Production
CORE 11.2.0.1.0 Production
TNS for Linux: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
SQL> !uname -a
Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux

I haven't done a Snapshot Standby (RAC or non-RAC). But I see no reason why it shouldn't work with a RAC Standby either.
The command is a Database level command, not an Instance level command.
Hemant K Chitale

How to create a physical RAC standby from a RAC primary on Std Edition 11g

Hi All,
I need to create a physical RAC standby with ASM (2 nodes - Linux) from a RAC primary(2 nodes - linux) with Standard Edition 11g. But I don´t want to use dataguard.
I know that to use dataguard is possible only Enterprise Edition.
Does anybody knows about any documents ID on metalink or any article about this ?
I appreciate if may help me.
Thanks.
Wander(Brazil)

Wander(Brazil) wrote:
Ok, but i need to RAC physical standby with 2 nodes.Yes you can create standby RAC as well and you also can look option of dbvisit which provides high availability even in standard edition with low licensing prices
in detail you can go through with this link http://www.dbvisit.com/products/dbvisit_standby_database_for_oracle_disaster_recovery
>
Wander(Brazil)
     Newbie
Handle:      Wander(Brazil)
Status Level:      Newbie
Registered:      Sep 23, 2005
Total Posts:      116
Total Questions:      21 (20 unresolved)
Name      Wander(BH-Brazil)
Location      BH (Brazil)
Occupation      Database Administrator
>
Please consider closing your old thread as answered.
Edited by: CKPT on May 21, 2013 10:11 AM

Register the RAC standby instances in CRS

Hi All,
Is there any document or artical for how to register the Standby RAC instances in CRS ? we have tried it but after reboot of the server
it mounted the standby instances but not started the media recovery.So can you pls share your ideas ?
Regards
Kamal

Use the srvctl utility to add the database/instances. When you do this, if you tell CRS that the database you are adding is a Standby, then it will start managed recovery automatically on startup. The srvctl commands can be found here:
http://download.oracle.com/docs/cd/E11882_01/rac.112/e16795/srvctladmin.htm#CDCGICIF
To add the database, do something like:
srvctl add database -d db_name -o oracle_home -p spfile_location -c RAC -r PHYSICAL_STANDBY -s MOUNT -t IMMEDIATE
Once the database has been added, add each node's instance similar to the following:
srvctl add instance -d db_name -i instance_name -n node_name
HTH,
Brian

RMAN/Dataguard 32bit RAC on OCFS2 primary to 64bit standby on ASM

Hi,
I would like to know if RMAN backup and dataguard standby can be created/configured for primary RAC db on OCFS2 32bit to standby RAC db on ASM 64bit?
This is for migration purposes as opposed on ongoing to minimize downtime.
Thanks,
Gareth

You have neither an OS nor database version? This is answer for 10g:
http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/standby.htm#i72053
Werner

RAC & DataGuard (Physical Standby)

Hello all,
I'm trying to get a high level overview of how RAC & DataGuard would behave in the following configuration. I've written down my understanding of how things would work. Please correct me if I'm wrong.
1) 2 node RAC (Primary Database) with a single instance physical standby.
a) Same standby related init.ora parameters would have to configured on both primary rac nodes.
b) The redo apply service at the standby would merge the redo from the 2 threads from the primary and apply it to the standby to keep it in sync.
c) During switch over only one primary RAC instance should be up besides the standby instance.
d) During switch back again only one primary RAC instance should be up besides the standby instance.
e) During failover ofcourse both primary instances would be down which warrants the fail over.
2) 2 node RAC (Primary) with a 2 node physical standby
This where it gets complex and I'm not really sure how a,b,c,d,e would be in this scenario. Appreciate if you could shed some light on this and list what
a,b,c,d,e would look like in this scenario.
I'm assuming that only one instance in the standby RAC should be up when the standby is in RAC configuration for the redo apply to work.
Also, if there is a white paper that details step by step procedure for setting up the above 2 scenarios, please let me know. So far I was able to find only the MAA white paper but that was not very helpful. If you can prescribe a good book for RAC & DataGuard that would be great too..
Thanks for your help

>
1) 2 node RAC (Primary Database) with a single instance physical standby.
a) Same standby related init.ora parameters would have to configured on both primary rac nodes.Usually rac nodes share their spfile on a shared diskvolume or through ASM. So they have identical DG parameter anyway
b) The redo apply service at the standby would merge the redo from the 2 threads from the primary and apply it to the standby to keep it in sync.Correct
c) During switch over only one primary RAC instance should be up besides the standby instance.
Sounds logical to me
Edit: In fact during normal operation both RAC nodes are up, so during switchover they are both active too
It is the configuration that matters. As soon as the standby is becoming primary, it might be that it talks only to one RAC node for its log-apply files
d) During switch back again only one primary RAC instance should be up besides the standby instance.That single was the only one running in step c.
e) During failover ofcourse both primary instances would be down which warrants the fail over.Correct. Keep in mind that during a failover the RAC config would be deconfigured from the DG setup and has to be added back again as standby.
You might have to take a look at: http://www.oracle.com/technology/deploy/availability/pdf/MAA_WP_10g_RACPrimarySingleInstancePhysicalStandby.pdf
>
2) 2 node RAC (Primary) with a 2 node physical standby
This where it gets complex and I'm not really sure how a,b,c,d,e would be in this scenario. Appreciate if you could shed some light on this and list what
a,b,c,d,e would look like in this scenario.
I'm assuming that only one instance in the standby RAC should be up when the standby is in RAC configuration for the redo apply to work.
No. RAC primary to RAC Standby would mean both nodes are up on both side. PrimNode1 send its redo logs to StandbyNode1 and the same for PrimNode2 and StandbyNode2
Have a look here: http://www.oracle.com/technology/deploy/availability/pdf/MAA_WP_10g_RACPrimaryRACPhysicalStandby.pdf
HTH,
FJFranken
My Blog: http://managingoracle.blogspot.com
Edited by: fjfranken on 16-jul-2010 1:13

Standby,RAC,Clone DB

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