The Multifunctioning DBA

Sep 23 2009   4:52PM GMT

Oracle Dataguard Replication Scare

Colin Smith Colin Smith Profile: Colin Smith

I had to bring down the standby server for the power outage in our DR location a few nights agon. No big deal, shut off replication from the primary, go to the standby and do a shutdown imediate, since you can not do a shutdown on the standby server. When things cam up I go to the secondary and do a startup nomount; and then alter database mount standby database; Well I thougt that was all I needed. About 10 minutes later I get some pages about the primary not being able to connect to the standby… DUH I forgot to start the listener on the standby. No Problem. I run lsnrctl start on the standby host and I am in business now. No more pages all is good. Well I thought so until after the cold backup that we run overnight from the standby database. Now I get a page saying that recover managed standby database cancel can not execute since this is not a managed standby database. I think that is odd and I check to see if archive logs are being applied and they are not and have not been for over 13 huors now. I find that I forgot to run alter database recover managed standby database; I run that command and look at that. Now my Archive logs are being applied. It took about 4 hours to get caught up but it did. So when bringing up the standby just do the following:




If you have enabled the primary to send archive logs then you are all set.

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