Correcting integrity problems in DEDB areas

A broken DEDB can be found by running DEDB Pointer Checker. In this case, you can repair the broken DEDB area.

Procedure

To repair a broken DEDB area, do the following tasks:

  1. Create an image copy backup of the DEDB area.
  2. Run DEDB Pointer Checker on the broken DEDB area.
  3. Obtain the CI Map/CI Dump report generated by the FABADA1 and FABADA4 steps and the Pointer Chain Reconstruction report generated by the FABADA4 step.
  4. Analyze the results. Verify the CI content and determine the appropriate corrections.
  5. Repair the DEDB area. The IMS Database Repair Facility provides a convenient tool for printing and changing the contents of a CI without modifying the Format 1 DSCB in the VTOC.
  6. Create an image copy backup of the repaired DEDB area.
  7. Rerun DEDB Pointer Checker with image copy input to verify database integrity.