Hi John,
Keeping things simple sometimes complicates things when they go haywire. I thought about the simple shotgun approach but wanted something a little more robust and I didn't want to risk deleting an archive log that hadn't been applied and then having to go through the hassle of finding in on tape. (We use RMAN on production server and "archivelog all delete input" every night.) A lot of logs could be zapped if the standby got hosed just before a 3-4 day weekend. I want to avoid having to rebuild the standby but I don't want to keep multiple days worth of logs around either. I just want to remove the logs that are no longer needed and the archive info is in the data dictionary views so why not use it?
Well after waiting on the list a while nobody did my job for me so I got busy and rolled my own... :-)
----------------------------------------------------------------------
#!/usr/bin/ksh
# File: sb_log_maint.sh ... Steve Orr, 12/12/2002
# Purpose: Purge standby database archive logs which have been applied.
ORAUBIN="/u01/app/oracle/bin"
SEQ_FILE="$ORAUBIN/last_purged_seqno.txt"
LAST_PURGED_SEQ=`cat ${SEQ_FILE}`
getAppliedLogs()
{
sqlplus -s "/ as sysdba" @$ORAUBIN/login.sql <<EOSQL
set feed off pages 0 echo off wra off
select sequence#, trim(name) from v\$archived_log
where sequence# > $LAST_PURGED_SEQ
and archived='YES'
order by sequence# ;
exit
EOSQL
}
getAppliedLogs | while read SEQNO FNAME
do
echo "Removing file $FNAME"
echo $SEQNO > $SEQ_FILE
if [ -f $FNAME ]; then
rm $FNAME
fi
done
----------------------------------------------------------------------
...it seems to work and I wasn't in a PERLescent mood.
Steve Orr
Bozeman, Montana
-----Original Message-----
From: John Carlson [mailto:[EMAIL PROTECTED]]
Sent: Thursday, December 12, 2002 10:19 AM
To: Multiple recipients of list ORACLE-L
Subject: Re: Purging Managed Standby Database Archive Logs
Keep it simple. If you are on unix put this in your crontab.
30 * * * * find /archive/oradata/YOURSID -type f -name "1_*.arc"
-mtime +0 -exec rm -f {} \;
This will run every hour on the half hour and purge everything over 24
hours old.
Modify as you like. (-mtime +1 gives you 48 hours) Yes, I know this
could delete files that haven't been applied but I figure if your
standby is 24 hours behind, it will need to be re-established anyway.
HTH,
John
>>> [EMAIL PROTECTED] 12/12/02 08:04AM >>>
Any one have a ready-made routine to purge the unneeded archives which
have
been automagically applied to a managed standby database?
I figure it needs to:
1. Query v$archived_log and v$log_history to get a list of the archive
logs
(v$archived_log.name) where sequence# > [the max number you purged the
last
time];
2. Cycle through the above list and remove the files;
3. Record the max(sequence#) from v$log_history for the next purge.
Any other ideas/suggestions?
AtDhVaAnNkCsE!!!
Steve Orr
Standing by in Bozeman, Montana
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: John Carlson
INET: [EMAIL PROTECTED]
