#!/bin/sh 
export BACK_DATE=`date +%Y%m%d` 
export BACKUP_PATH=/home/oracle/dbbak 
echo `mkdir -p ${BACKUP_PATH}/archivelog/${BACK_DATE}` 
rman msglog=$BACKUP_PATH/archivelog/${BACK_DATE}/arch_0_$BACK_DATE.log << EOF 
connect target /; 
delete expired archivelog all; 
delete noprompt archivelog until time 'sysdate - 1' ; 
exit 
EOF