RAC Instance Fails to Start With Error ORA-27504: IPC error creating OSD context
Last updated on JULY 12, 2018
Applies to:Oracle Database - Enterprise Edition - Version 184.108.40.206 and later
Information in this document applies to any platform.
Attempting to start a RAC instance gives ORA-27504: IPC error creating OSD context.
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Connected to an idle instance.
ORA-27504: IPC error creating OSD context
Other symptoms may include:
- Other errors: Any of the following may apply:
- No other errors are seen
- ORA-603 is seen as well
- "ORA-00439: feature not enabled: Real Application Clusters" is seen
- Alert log: With this issue, any of the errors seen at startup may be recorded in the instance alert log. Or, there may be no errors at all recorded in the instance alert log.
This error may arise after manual install, or after patch apply, or manual relink, or other change to the database home.
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