RMAN Automatic Script : Backup Archivelog

export ORACLE_SID=TEST2
sqlplus /nolog <<EOF
connect / as sysdba
alter system switch logfile;
EXIT
EOF
rman <<EOF
connect target rman/rman_oracledba@test2
connect catalog rman/rman_oracledba@test1
run { allocate channel d1 type disk
format '/data/oracle/BACKUP/rman_ARC_%s_%p_%t.bus';
backup archivelog from time 'sysdate-1/24';
}
EOF
sqlplus /nolog <<EOF
connect / as sysdba
alter system switch logfile;
EXIT
EOF