How to restore a control file without having its backup
Hi,
Can any one please suggest me how to restore a control file without having its backup.
Thanks
To add to what SB said, in years past the instructions for re-creating the control file manually were contained in the DBA Administration manual. It used to be and may still be common to be taking and saving a "backup control file to trace" for this purpose.
If you lost only the primary copy of the control file and it is an OS file then while the database is shutdown you can copy the secondary over the primary and then use if to start the database. If the control file is stored in ASM then there should be a way to perform the copy via ASM.
If you use rman for backups then a copy of the control file should be part of the backup process and you can retrieve it from the backup set then perform recovery using the backup control file though I do note the OP said something to the effect no backup exists. Still, I have knows of instances where the DBA did not realize that the backup set contained the control file and the spfile so I think this is worth mentioning just in case.
HTH -- Mark D Powell --
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channel c1: finished piece 1 at 26-OCT-11
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RMAN 06172 ,
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