Re: DataGuard Weirdness
Date: Thu, 9 Feb 2012 06:13:32 -0800 (PST)
"we are still missing logs which have not been shipped onto the standby from the Primary."
If this statement holds true, then if you run the following statement on the primary and in the standby,you'll see differences in sequence#
select max(sequence#) from v$archived_log;
select max(sequence#) from v$archived_log where archived='YES';
Also check on the primary for archive log shipping error by running the following sql.
select dest_id,status,error from v$archive_dest where dest_id=2; (if you configure log_archive_dest_2 for the standby or use dest_id accordingly)
From: Robertson Lee - lerobe <Lee.Robertson_at_acxiom.com> To: oracle-l_at_freelists.org
Sent: Thursday, February 9, 2012 8:39 AM Subject: DataGuard Weirdness
Just set up an 11gR2 DG config (one primary/one standby) on Linux and am seeing some strange errors in the standby alert log.....
Every now and again, (its fairly random) the following is happening.
RFS: Selected log 5 for thread 1 sequence 29031 dbid 874073702 branch 764422822
Thu Feb 09 13:02:49 2012
RFS: Selected log 5 for thread 1 sequence 29032 dbid 874073702 branch 764422822
Thu Feb 09 13:02:56 2012
Fetching gap sequence in thread 1, gap sequence 29030-29030
Thu Feb 09 13:03:49 2012
RFS: Selected log 5 for thread 1 sequence 29033 dbid 874073702 branch 764422822
Thu Feb 09 13:04:48 2012
FAL[client]: Failed to request gap sequence
GAP - thread 1 sequence 29030-29030
DBID 874073702 branch 764422822
FAL[client]: All defined FAL servers have been attempted.
Check that the CONTROL_FILE_RECORD_KEEP_TIME initialization
parameter is defined to a value that's sufficiently large
enough to maintain adequate log switch information to resolve
I have googled until I am sick and also been on My Oracle Support . Everything points to a bug (which says has been fixed in 11g) as I have tried all the various select statements from the internal views that have been recommended on various web sites (and MOS) yet they all return no rows which supposedly means all is fine. Despite this we are still missing logs which have not been shipped onto the standby from the Primary.
Any ideas ?
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Received on Thu Feb 09 2012 - 08:13:32 CST