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RAC replication [message #443182]

Sat, 13 February 2010 07:05

caprikar
Messages: 226
Registered: March 2007

Senior Member

Hi,
I have a 10gR2 two node RAC database on HP-Ux. We have replication to a different location using SRDF. On the otherside where we have SRDF, I want to bring up the database as a single node and the hostname will be different. Will CRS complain about having differnet hostname? If that is the case what do i need to do to get around this problem?
Thanks

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Re: RAC replication [message #443187 is a reply to message #443182]

Sat, 13 February 2010 08:54

BlackSwan
Messages: 26766
Registered: January 2009
Location: SoCal

Senior Member

> I want to bring up the database as a single node and the hostname will be different.

Normal & expected configuration.

>Will CRS complain about having differnet hostname?

Please clarify.
Is CRS running on this new/different single node? If so, why?

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Re: RAC replication [message #443223 is a reply to message #443187]

Sat, 13 February 2010 18:21

caprikar
Messages: 226
Registered: March 2007

Senior Member

Hi,
We dont need CRS, but how do I disable it it? using CRSCTL DIABLE? Since the hostname is different, will there be any issue?
Thanks

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Re: RAC replication [message #443235 is a reply to message #443223]

Sat, 13 February 2010 18:44

BlackSwan
Messages: 26766
Registered: January 2009
Location: SoCal

Senior Member

>We dont need CRS, but how do I disable it it? using CRSCTL DIABLE? Since the hostname is different, will there be any issue?

who/why does/did CRS get installed on standalone system in first place?

Don't install CRS on stand alone system, then you don't need to disable it.

ALTER SYSTEM SET CLUSTER_DATABASE=FALSE SCOPE=SPFILE;
just do above before starting the DB

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Re: RAC replication [message #443240 is a reply to message #443182]

Sat, 13 February 2010 21:36

caprikar
Messages: 226
Registered: March 2007

Senior Member

The Oracle home comes as part of replication from the RAC server, thats why cluster is enabled.

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Re: RAC replication [message #443243 is a reply to message #443240]

Sat, 13 February 2010 22:56

entekeralam
Messages: 19
Registered: January 2010

Junior Member

CRS won't start just because there is oracle binaries at CRS_ORACLE_HOME. It is started from /etc/init.d/inittab

So you can login as oracle at DR site , set ORACLE_HOME to database oracle_home and start with sqlplus.

But... at the time of disaster, when you attempt to start database at DR site, oracle has to do crash recovery. So what will happen to redo from thread 2 ? ( Please post your findings when you do a test)

[Updated on: Sat, 13 February 2010 23:25]

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