corrupt redo log block header
Today we had 100% storage in the filesystem of the database and archive logs (to many netapp snapshots). In the alert.log file we got: ORA-00354: corrupt redo log block header ORA-00353: log corruption near block 24184 change 45850151 time 06/03/2007 03:10:12 ORA-00312: online log 2 thread 1: '/cycprd/oraredo2/redo02_2.log' ORA-00312: online log 2 thread 1: '/cycprd/oraredo2/redo02.log' ARC0: All Archive destinations made inactive due to error 354 After freeing this filesystem, the sollution was: alter database clear unarchived logfile group 1; alter database clear unarchived logfile group 2 ; alter database clear unarchived logfile group 3; Checking if it worked: alter system switch logfile; alter system switch logfile; alter system switch logfile; alter system switch logfile;