Oracle Message ORA-00368 - checksum error in redo log block

ERRORchecksum error in redo log block
CAUSEThe redo block indicated by the accompanying error, is not vaild. It has a checksum that does not match the block contents.
ACTIONRestore correct file or reset logs.

394018Oracle & Direct IO on Tru64 UNIX V5.X
694155Error due to corrupt redo logs