Tuesday, August 9, 2011

I am a real DBA now!

Once I've been told is that to be a real DBA you need to do at least one restore a production system from RMAN backup...I think, I came close to that :-) - yesterday night I was able to create a duplicate instance from our production Level-0 (around 200 GB of data restored from tape over the weekend). Although, it was a very long night!

For all my sins (and because our real DBA is on vacations) this task landed on my laps last week - and since then I started to truly appreciate the work of honest-to-god administrators, non semi-architects/semi-developers like me.

OK, I will stop ranting... A couple of useful remarks:
- Arup/Sam/Darl, I owe you at least one round of good drinks! Your book "RMAN Recipes for Oracle Database 11G" helped me a lot!
- As usual, around midnight I've hit an brick wall. RMAN was complaining about a space "somewhere", I've spent another hour trying to figure what it was about. And eventually I discovered the solution in the bug-list (#8631293):

 * RMAN Duplicate command signals RMAN-06561 (available space must be larger than NNN kb) when the recovery area parameter is set.
* The workaround is not to set db_recovery_file_dest and db_recovery_file_dest_size parameters in the init.ora

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