Purging ADR log and trace files automatically

The following script was put by David Sutton, and shows a way to create a script to tidy up the logs and trace files generated in 11G. Note that the purge time is in seconds and this keep s 30 days online. This is probably too many on some of our systems and this is likely to be reduced to 14 days although we will keep incident history for longer
This is called each day from cron (or it could be run from dbms_scheduler, either directly or via an OEM job)
#!/usr/bin/ksh
#
#
#
# Description
# Shell script to interact with the ADR through ADRCI and purge ADR contents
#
# Tunables
###
LOCKFILE=/tmp/mor_adrci_purge_.lck
###
######
# Start Of Functions
#
# tidyup – common fuction called if error has occured
tidyup () {
        rm -f ${LOCKFILE}
        echo “ERROR: Purge aborted at `date` with exit code ${ERR}”
        exit ${ERR}
}
######
# End Of Functions
### Main Program
# Check user is oracle
USERID=`/usr/bin/id -u -nr`
if [ $? -ne 0 ]
then
        echo “ERROR: unable to determine uid”
        exit 99
fi
if [ "${USERID}" != "oracle" ]
then
        echo “ERROR: This script must be run as oracle”
        exit 98
fi
echo “INFO: Purge started at `date`”
# Check if lockfile exists
if [ -f ${LOCKFILE} ]
then
        echo “ERROR: Lock file already exists”
        echo “       Purge already active or incorrectly terminated”
        echo “       If you are sure tidy isn’t active, please remove “
        echo “       ${LOCKFILE}”
        exit 97
fi
# Create lock file
touch ${LOCKFILE} 2>/dev/null
if [ $? -ne 0 ]
then
        echo “ERROR: Unable to create lock file”
        exit 96
fi
# Purge ADR contents
echo “INFO: adrci purge started at `date`”
/app/oracle/product/11.1.0/db_1/bin/adrci exec=”show homes”|grep -v : | while read file_line
do
  echo “INFO: adrci purging diagnostic destination ” $file_line
  echo “INFO: purging ALERT older than 90 days ….”
  /app/oracle/product/11.1.0/db_1/bin/adrci exec=”set homepath $file_line;purge -age 129600 -type ALERT”
  echo “INFO: purging INCIDENT older than 30 days ….”
  /app/oracle/product/11.1.0/db_1/bin/adrci exec=”set homepath $file_line;purge -age 43200 -type INCIDENT”
  echo “INFO: purging TRACE older than 30 days ….”
  /app/oracle/product/11.1.0/db_1/bin/adrci exec=”set homepath $file_line;purge -age 43200 -type TRACE”
  echo “INFO: purging CDUMP older than 30 days ….”
  /app/oracle/product/11.1.0/db_1/bin/adrci exec=”set homepath $file_line;purge -age 43200 -type CDUMP”
  echo “INFO: purging HM older than 30 days ….”
  /app/oracle/product/11.1.0/db_1/bin/adrci exec=”set homepath $file_line;purge -age 43200 -type HM”
  echo “”
  echo “”
done
echo
echo “INFO: adrci purge finished at `date`”
# All completed
rm -f ${LOCKFILE}
echo “SUCC: Purge completed successfully at `date`”
exit 0