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ORA-01115 ORA-01110 ORA-27091 ORA-27072 Errors occur intermittently (Doc ID 1083269.1)

Last updated on FEBRUARY 02, 2022

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 10.2 to 11.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
HP-UX PA-RISC (64-bit)


  • You can face this issue in either RAC or non RAC environment.
  • The errors reported you are facing match with the following ORA errors:
The block, data file and 'Addional information' will will depend on your database so it will be different than this example.

Notice there is no OS error reported.
  • If you are running a client application you could see the errors in the client application log and not in the alert log file.
  • The error is reported intermittently and it's not easy to reproduce. Also there isn't a corruption associated with this issue.
  • Your OS log file ('syslog') does not show evidence of any problem related to this issue and you or your SA do not find issues with the storage either.
  • Some other important patterns found are that you may be running with RAW files and, this is very important, with ASYNC disabled (disk_async_io = FALSE).


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