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Re: clean up ocr?

From: herta <herta.vandeneynde_at_gmail.com>
Date: Tue, 26 Jun 2007 14:49:33 -0000
Message-ID: <1182869373.641879.307030@m36g2000hse.googlegroups.com>


On Jun 26, 2:45 pm, Mladen Gogala <mgogala.SPAM_ME...._at_verizon.net> wrote:
> On Tue, 26 Jun 2007 07:27:17 +0000, herta wrote:
> > environment: Oracle EE 10.2.0.3 on SLES10
>
> > I'm setting up Data Guard largely following the instructions in
> >http://www.oracle.com/technology/deploy/availability/pdf/
>
> MAA_WP_10g_RACPrimaryRACPhysicalStandby.pdf
>
>
>
>
>
> > In doing so, I ran into a few issues, due to which I had to start over a
> > couple of times. Data Guard is up and running now, but I'm having
> > problems adding the standby database (back) into the cluster, because it
> > claims the database already exists. Oracle's solution, "choose a
> > different name for the database being created" is not practicable in
> > this case, as it would upset our naming schemes, and hence cause
> > scripting issues.
>
> > Is there a way to clean the entries for this database from the ocr?
>
> > Kind regards,
>
> > Herta
>
> > $ srvctl add database -d pa99nb -o /oracle/base/product/10.2.0/db_1/
> > PRKP-1073 : Cannot create database pa99nb because a database named
> > pa99nb already exists.
>
> > $ srvctl remove database -d pa99nb
> > Remove the database pa99nb? (y/[n]) y $ srvctl add database -d pa99nb
> > -o /oracle/base/product/10.2.0/db_1/ PRKP-1073 : Cannot create database
> > pa99nb because a database named pa99nb already exists.
>
> > $ crs_stat | grep pa99nb ; echo $?
> > 1
>
> > $ ocrdump -stdout | grep -i pa99nb
> > [DATABASE.LOG.pa99nb]
> > [DATABASE.LOG.pa99nb.INSTANCE]
> > [DATABASE.DATABASES.pa99nb]
> > ORATEXT : pa99nb
> > [DATABASE.DATABASES.pa99nb.ORACLE_HOME]
> > [DATABASE.DATABASES.pa99nb.DOMAIN]
> > [DATABASE.DATABASES.pa99nb.SPFILE]
> > [DATABASE.DATABASES.pa99nb.DB_NAME]
> > [DATABASE.DATABASES.pa99nb.ROLE]
> > [DATABASE.DATABASES.pa99nb.START_OPTIONS]
> > [DATABASE.DATABASES.pa99nb.ENABLED]
> > [DATABASE.DATABASES.pa99nb.POLICY]
> > [DATABASE.DATABASES.pa99nb.PRIOR_POLICY]
> > [DATABASE.DATABASES.pa99nb.SERVICE]
> > [DATABASE.DATABASES.pa99nb.CONFIG_VERSION]
> > [DATABASE.DATABASES.pa99nb.ENVIRONMENT]
> > [DATABASE.DATABASES.pa99nb.INSTANCE]
>
> Why would you want to add a single-instance standby to the cluster
> registry? You are aware of the fact that standby database is a single
> instance thing, usually not only outside the cluster but also in separate
> location. In the company that I work for, standby databases are in another
> state.
> Registry and a voting file are data files and the only way
> to clean them up is to copy approximately 64MB of zeros over them, by
> doing something like dd if=/dev/zero of=/dev/rdsk/ocr bs=1024k count=64
> That will make the cluster registry squeaky clean, nothing will survive.
> Unfortunately, oracle doesn't yet have anything like the (in)famous
> "regedit" utility. On the other hand, ORA-0600 and ORA-7445 are Oracle
> versions of BSOD.
>
> --http://www.mladen-gogala.com

You can run standby databases in a cluster, as is explained in both the document I already referred to and in the OracleŽ Data Guard Concepts and Administration manual (cf.
http://download-uk.oracle.com/docs/cd/B19306_01/server.102/b14239/rac_support.htm#sthref2203)

We decided to use a cluster at our disaster recovery site to have high availability there as well. We don't have HW support on the database server systems that we ship there, and having a cluster already up and running should make it easier to add nodes in case we have do a disaster.

And yes, a 'regedit' type tool is what I was hoping for. :-(

Kind regards,

Herta Received on Tue Jun 26 2007 - 09:49:33 CDT

Original text of this message

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