export ORACLE_BASE=/oracle/product/11.2
export ORACLE_HOME=/oracle/product/11.2/dbhome_1
export ORA_CRS_HOME=/oracle/product/grid
export ORACLE_SID=snltnfzc1
export PATH=$PATH:$ORACLE_HOME/bin:$ORACLE_HOME/OPatch:$ORA_CRS_HOME/bin
export ORACLE_UNQNAME=rac
datetime=`date  +%Y%m%d%H`

rman target / <<EOF
delete noprompt archivelog until time 'sysdate-4';
exit;
EOF