#! /usr/bin/ksh

export ORACLE_SID=$1
[ ! -d "$2" ] && exit 1;
MIREP=$2

if [ ! -z $3 ];then
  RETENTION=$3
else
  RETENTION=1
fi
MIPATH=`dirname $0`
MIDATE=`date +%Y%m%d_%H%M%S`
MILOG="$MIPATH/backup_${ORACLE_SID}_${MIDATE}.log"

rman target / nocatalog <<EOF$ORACLE_SID |tee $MILOG
allocate channel for maintenance type disk;
change archivelog all crosscheck;
release channel;
run  {
allocate channel c1 type disk;
allocate channel c2 type disk;
backup
  incremental level 0 tag db_0
  filesperset 10
  format '$MIREP/db_0_${MIDATE}_%d_s%s_p%p'
  (database include current controlfile);
sql 'alter system archive log current';
backup
 filesperset 50
 format '$MIREP/arch_${MIDATE}_%d_s%s_p%p'
 archivelog all;
release channel c1;
release channel c2;
sql "alter database backup controlfile to
  ''$MIREP/control_sav_${MIDATE}.ctl'' reuse";
}
EOF$ORACLE_SID

NBERR=`grep -c "RMAN-00569" $MILOG`
if [ $NBERR -eq 0 ];then
  for i in `find $MIREP -mtime +$RETENTION`
  do
    [ ! -d $i ] && rm $i
  done
  rman target / nocatalog <<EOF$ORACLE_SID |tee -a $MILOG
allocate channel for maintenance type disk;
crosscheck backup;
delete expired backup;
release channel;
EOF$ORACLE_SID
  echo "Fin normale du backup de $ORACLE_SID" |tee -a $MILOG
else
  echo "erreur(s) detectees lors du backup de $ORACLE_SID" |tee -a $MILOG
fi
exit $NBERR