I use this script to clean up all the log and trace file from each host.. You can schedule a job in OEM to go and execute this in all hosts you want.
$cat /etc/oratab
ESRTSP:/oracle/app/EPW/rdbms/v10203_ee_suse10:N
ESRTSS:/oracle/app/EPW/rdbms/v10203_ee_suse10:N
RESTST:/oracle/app/EPW/rdbms/v10203_ee_suse10:N
LISTENER_10g:/oracle/app/EPW/rdbms/v10203_ee_suse10:N
AGENT_10g:/oracle/app/EPW/agent/v10203_ee_suse10:N
#!/bin/ksh
export PATH=/usr/bin:$PATH
export USERNAME=`whoami`
export HOSTNAME=`hostname`
#
# 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_${HOSTNAME}_*’ -mtime +3 -exec rm -r {} \;
###############################################
###############################################
## ADD ALL INSTANCES TO THE FOR LOOK LIST ##
###############################################
###############################################
for SID in `cat /etc/oratab|egrep ‘:N|:Y’|grep -v \*|cut -f1 -d’:’|egrep -v ‘LISTENER|AGENT’`
do
find /oracle/EPW/${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 {} \;
done
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