Re: Strange problem with controlfile

From: Sreejith S Nair <sreejithsna_at_gmail.com>
Date: Thu, 29 Dec 2011 22:35:06 +0530
Message-Id: <D4A7D6B0-FDE8-414C-BE87-3D4CA93490E9_at_gmail.com>

I have mounted the instance using pfile with one good copy o control file. Database is up and running for the users. However, I do not understand why oracle complains for control file when I gave startup no mount. As per my understanding control file is read only when database is mounted. This sounds very strange after all !

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Sreejith
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On Dec 29, 2011, at 8:47 PM, "CRISLER, JON A" <JC1706_at_att.com> wrote:

I don't recall at the moment- are you stuck in such a way that you cannot mount the db because of controlfile issues, and you don't have a way to move the controlfile now ?  Do you have a backup of your spfile ? You can always leave out the problem controlfile description, assuming you have more than one.

-----Original Message-----
From: Sreejith S Nair [mailto:sreejithsna_at_gmail.com] 
Sent: Wednesday, December 28, 2011 8:03 PM
To: CRISLER, JON A
Cc: andy_at_oracledepot.com; Sreejith.Sreekantan_at_ibsplc.com; oracle-l_at_freelists.org
Subject: Re: Strange problem with controlfile

Thank you for the comments. But , will the control file location be read when database is in no mount state? My understanding is that control file is read only when database is in mounted state. 

Sreejith
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Sent from my iPhone

On Dec 28, 2011, at 11:58 PM, "CRISLER, JON A" <JC1706_at_att.com> wrote:

I just wanted to second what Andy says-  use RMAN to move / duplicate your control files.  I have messed around with this using cp but rman works better overall.

-----Original Message-----
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Andy Klock
Sent: Wednesday, December 28, 2011 9:31 AM
To: Sreejith.Sreekantan_at_ibsplc.com
Cc: oracle-l_at_freelists.org
Subject: Re: Strange problem with controlfile

Hi Sreejith,
I have seen this before. It has to do with the way OMF is handled on ASM.
The best way to do this is use RMAN to restore the controlfile to another
location.  See this note for details: *How to duplicate a controlfile when
ASM is involved [ID 345180.1]*
I have found ways to get ASM to recognize files with non omf names, but the
above is the cleanest supported way.

Andy

RMAN-00571: ===========================================================


> RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

> RMAN-00571: ===========================================================

> RMAN-03002: failure of startup command at 12/28/2011 12:22:53

> RMAN-04014: startup failed: ORA-15124: ASM file name

> '+DATA2/FDSTG2/CONTROLFILE/fdstg2_control,

> +DATA1/fdstg2/controlfile/current.260.676234913' contains an invalid alias

> name

> 

> We were planning to use  restore controlfile to

> '+DATA2/FDSTG2/CONTROLFILE/fdstg2_control'  from

> '+ARCH1/fdstg2/controlfile/current.256.676234913';  command to create copy

> of control file to DATA2 disk group. But Instance did not come up. Finally

> we had to start instance using one control file.

> 

> 



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Received on Thu Dec 29 2011 - 11:05:06 CST