RE: Interesting RMAN duplicate problem.

  • From: "Dunbar, Norman" <norman.dunbar@xxxxxxxxxxxxxxxxxxxxxxxxx>
  • To: "Robert Freeman" <robertgfreeman@xxxxxxxxx>
  • Date: Thu, 28 Jan 2010 08:47:53 -0000

Morning Robert,

>> ...

>> 1. Do the duplicate. It would fail as you describe. 
>> 2. Start a manual recovery using the SQL*Plus recover 
>> database until cancel command. You can use until time, etc.
>> 3. Manually extract archived redo logs from the source 
>> system as required for the recovery on the duplicate.

It was going so well. The problem is a chunk of missing archived logs,
so I'm unable to apply them. :-(

>> 4. Once I'm at the point I want to open the database, I 
>> would open the database using resetlogs.

Which is, unfortunately, the point I can't get to. System data file
needs additional recovery.


>> The problem often involved a case where the recovery 
>> point-in-time was contained in an online redo log that was 
>> not archived yet (the current online redo log). You can, of 
>> course, use the V$ views (ie: V$RECOVER_FILE, V$DATAFILE, 
>> etc...) to determine the state of the data files, and their 
>> consistency. 

All files are online at the same SCN, date & Time according to
v$datafile_header. All files are still in "RECOVERY" status according to
V$RECOVER_FILE.

I have the rman backup and the backup of all the archived logs from
before, through and just after  the backup of the datafiles. 

Well, I did have. I've blown them all away now and restarted the rman
backup. Better luck this time I hope!



Cheers,
Norman.


Norman Dunbar
Contract Oracle DBA
CIS Engineering Services
Internal : 7 28 2051
External : 0113 231 2051


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