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Thursday, January 20, 2011

Copying Archived Logfile from ASM to a file system

Following OTN tread http://forums.oracle.com/forums/thread.jspa?threadID=2154801&tstart=0 about copying archived logfiles from ASM to a UNIX filesystem, I am posting a script we used in the past.
Nowadays we use RMAN to get the files from ASM directly into a TSM diskpool, but back then we used another method for putting the archived logfiles on backup, which resulted in the need for this script:


# Script to copy archived logfiles from ASM to a file system on UNIX
# In this case all archived logfiles found in v$archived_log are copied to a staging mount point /opt/asmprd/ar01
# The username/password used to access the database need to be set before use of this script.
# For sake of security I removed these lines from this script
#
# The script needs to be run as owner of the ASM instance
#
#
export ORACLE_SID=WCSPRD
export FSFULL=FALSE
export ORACLE_BASE=/opt/$LOGNAME/ora
export CRS_HOME=/opt/crsprd/ora/11.1.0
export ORA_CRS_HOME=$CRS_HOME
export ASM_HOME=/opt/asmprd/ora/11.1.0
export ORA_ASM_HOME=$ASM_HOME
export ORACLE_HOME=$ORACLE_BASE/11.1.0
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:$CRS_HOME/lib:$ORACLE_HOME/lib32:$CRS_HOME/lib32
export LIBPATH=$LD_LIBRARY_PATH
export PATH=$ORACLE_HOME/bin:$CRS_HOME/bin:$PATH
export TNS_ADMIN=/opt/oraadmin/network/admin
export ORACLE_SID=+ASM
export HOST=`hostname`
export LOG_FILE=/var/adm/log/StageArchives_${HOST}.log
export A_FILE_COPIED=FALSE
#
# Optionally turn Debug on to see what the script does
export Debug=false
#
# Functions
#
Log() {
echo "`date +%Y/%m/%d` (`date +%H:%M:%S`) : $1" | tee -a $LOG_FILE
} #End Log
#
#
Continue()
{
echo "Continue....? [n]\c"; read ans
case $ans in
y|Y) echo "\n\nContinuing...."
break;;
*) exit 0
break;;
esac
unset ans
}
#
#
GetArchiveList()
{
echo "set termout off heading off pages 9999 lines 70 feedback off" > /tmp/getArchives.$$.sql
echo "column name format A70;" >> /tmp/getArchives.$$.sql
echo "spool /tmp/archivelist.lst;" >> /tmp/getArchives.$$.sql
echo "select trim(name) from v\$archived_log where deleted='NO' and archived='YES';" >> /tmp/getArchives.$$.sql
echo "quit;" >> /tmp/getArchives.$$.sql
$ORACLE_HOME/bin/sqlplus -S ${WCSPRD_SYS}@WCSPRD as sysdba @/tmp/getArchives.$$.sql

if [ "$Debug" = "true" ]
then
cat /tmp/getArchives.$$.sql
Continue
fi
rm -f /tmp/getArchives.$$.sql
}


StoreArchivesInFS()
{
ArchName=$1
ArchShortName=`basename $1`
ArchDest=/opt/asmprd/ar01/${ArchShortName}
AvailFS=`df -gv /opt/asmprd/ar01 | grep -v Free| awk '{print $5}' | cut -d'%' -f1`
Log "Archiving $ArchDest"

if [ "$Debug" = "true" ]
then
echo "AvailFS = $AvailFS"
echo "Commando = $ASM_HOME/bin/asmcmd cp $ArchName $ArchDest"
Continue
fi
if [ $AvailFS -lt 90 ]
then
echo "$ASM_HOME/bin/asmcmd cp $ArchName $ArchDest"
$ASM_HOME/bin/asmcmd cp $ArchName $ArchDest >/dev/null 2>&1

if [ -f "$ArchDest" ]
then
export A_FILE_COPIED=TRUE
$ASM_HOME/bin/asmcmd rm $ArchName >/dev/null 2>&1
Log "$ArchName has been deleted from ASM."
else
echo "ArchDest=$ArchDest"
ls -l $ArchDest
fi
else
export FSFULL=TRUE
fi
}


RmanCrosscheck()
{
# Crosscheck and clean repository
#Log "Crosscheck and clean repository"
$ORACLE_HOME/bin/rman target ${WCSPRD_SYS}@WCSPRD rcvcat ${TSMORA_TSMCAT}@tsmora cmdfile StageArchives.cmd
d
}


# Main Program
PROG_PID=$$
RUNNING=`ps -ef| grep StageArchives.sh | grep -v ${PROG_PID} | grep -v grep | awk '{print $2}'`
if [ -n "$RUNNING" ]
then
Log "Old Running session(s) found with PID(s): $RUNNING "
ps -ef| grep ${RUNNING} | grep -v grep >> $LOG_FILE
for tpid in $RUNNING
{
kill $tpid
}
fi
GetArchiveList
cat /tmp/archivelist.lst | while read ARCHFILE
do
if [ ! "$ARCHFILE" = "" ]
then
StoreArchivesInFS $ARCHFILE
if [ "$FSFULL" = "TRUE" ]
then
#
# Insert some action here to clean up the destination file system
fi
fi
done
#
#
#

#
# Use Rman to update the recovery catalog
RmanCrosscheck

unset FSFULL ARCHFILE
#rm -f /tmp/archivelist.lst


The script contains a call to 'rman' using the command file 'StageArchives.cmd'
This file looks like:

allocate channel for maintenance type disk;
crosscheck archivelog all;
delete noprompt expired archivelog all;
quit;


Please note that I am not able to give any support to anyone who wants to use this script.
You are allowed to copy and use it, but for the remainder you're on your own.


Success!

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