Oracle DBA, How To, Error, Cause and Action

ORA-02159: installed DLM does not support releasable locking mode

ORA-02159: installed DLM does not support releasable locking mode




Cause: The parameter file specified gc_* parameters that allow locks to be release by the LCK process when not in use. This mode requires additional support from the DLM that is not available.




Action: Specify configuration parameters that do not require the additional function.