Oracle DBA Daily Experiences

Ksh/Borne/Bash shell
$ ls /usr/bin
….
# when success value is 0
$ echo $?
0
$ ls /usr/bin/blah
ls: 0653-341 The file /usr/bin/blah does not exist
# when failure non-zero status
$ echo $?
1

c/Tcsh
$ ls /usr/bin
….
# when success value is 0
$ echo $status
0
$ ls /usr/bin/blah
ls: 0653-341 The file /usr/bin/blah does not exist
# when failure non-zero status
$ echo $status
1

A simple script to delete trace files and arc logs from remote location, based on oratab instances.

#!/bin/ksh

export PATH=/usr/bin:$PATH
export USERNAME=`whoami`
export HOSTNAME=`hostname`

########################################
#  Copy TNS Names file to local disk   #
########################################
/bin/ksh /work/dba/monora/scripts/update_local_tns.ksh > /tmp/update_local_tns.log 2>&1
#
#      Clean up Oracle Export logs
#
find /work/dba/logs -name ‘*${HOSTNAME}_*’ -mtime +7 -exec rm {} \;
find /tmp -name ‘*${HOSTNAME}_*’ -mtime +7 -exec rm {} \;
find /work/dba/prod/backups -name ‘tmp_ora_${HOSTNAME}_*’ -mtime +3 -exec rm -r {} \;

for SID in `cat /etc/oratab|egrep ‘:N|:Y’|grep -v \*|cut -f1 -d’:'|egrep -v  ‘LISTENER|AGENT’`
do
find /oracle/EPW/${SID}/admin/udump -name ‘*.trc’ -mtime +13 -exec rm {} \;
find /oracle/EPW/${SID}/admin/cdump -name ‘core*’ -mtime +13 -exec rm -r {} \;
find /oracle/EPW/${SID}/admin/bdump -name ‘*.trc’ -mtime +13 -exec rm {} \;
find /oracle/EPW/${SID}/admin/adump -name ‘*.aud’ -mtime +13 -exec rm {} \;

## To delete ach logs from remote online location for dev/test/training env that are in arch log mode
find /oracle/EPW/arch/${SID} -name ‘${SID}*.arc’ -mtime +3 -exec rm {} \;
done