Possible Oracle corruption when using filesystemio_options=SETALL

Solution Verified - Updated -

Issue

  • Using a combination of a EXT4 filesystem, Oracle RMAN backups set with filesystem_io=SETALL, and compression enabled causes database backups to be corrupted during recovery.
  • This behavior may have been ongoing for some time and was only noticed after validation was enabled during database restores.
  • The last 512 byte block is being overwritten with zeros and this is corrupting the database.
  • The corrupted 512 byte block is consistently 131072, but not always.

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • EXT4
  • Oracle RMAN for database backups/recovery

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