Output for DEDB Pointer Checker

DEDB Pointer Checker provides analysis information for database administrators and technical support personnel. It provides integrity verification reports, and summary and detailed analysis reports for those in database management, maintenance, and performance tuning.

If invalid pointer chains are encountered, messages are generated to provide the relative byte address (RBA) of the "orphan" segment, the RBA of the segment that contains the pointer that refers to a nonexistent segment, or the RBA of broken pointer chains. Messages are also generated if PCF/PCL/SSP pointer interdependency errors are detected. Messages are generated if invalid FSE chains or other IMS or VSAM control field errors are encountered. Any space utilization discrepancies are reported (that is, if the total of all segment lengths plus FSE and scrap lengths plus VSAM and IMS overhead does not equal CI size).

DEDB Pointer Checker reports can be used for monitoring and tuning DEDBs. For more information, see the topic "DEDB monitoring and tuning guide" in the IMS Fast Path Solution Pack: IMS High Performance Fast Path Utilities User's Guide.