SQL> connect / as sysdba
Connected to an idle instance.
ORACLE instance started.
Total System Global Area 1987563520 bytes
Fixed Size 2214696 bytes
Variable Size 1040188632 bytes
Database Buffers 939524096 bytes
Redo Buffers 5636096 bytes
ORA-03113: end-of-file on communication channel
Process ID: 5114
Session ID: 191 Serial number: 3
Connect to the RMAN, and delete archive log older than a week.
$rman target /
RMAN> startup mount;
RMAN> delete archivelog until time “sysdate-7”;
RMAN> delete force archivelog all;
RMAN> delete backup completed before “sysdate-3”;