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Oracle® Database 11g / 12c / 18c error codes ORA-00239: timeout waiting for control file enqueue: held by [string] for more than string seconds
ORA-00239: timeout waiting for control file enqueue: held by [string] for more than string seconds
Oracle Error Code: ORA-00239
Cause: The specified process waited the maximum allowed time for the control file enqueue.
Action: Restart the blocking instance indicated in the incident trace file or reboot the blocking node.