Oracle Message ORA-09952 - scgcmn: lk_open_convert unexpected return: open failed

ERRORscgcmn: lk_open_convert unexpected return: open failed
CAUSEThe distributed lock manager returned an unexpected value
ACTIONCheck for system error message and refer to the distributed lock manager documentation or contact your customer support representative.

480266Problems with the SYSDBA/SYSOPER/INTERNAL connect