Restoring a non-HALDB database after conversion
The process of restoring HDAM or HIDAM databases that were migrated to PHDAM or PHIDAM is referred to as fallback.
Fallback supports the conversion of the following types of logical relationships:
- Unidirectional HALDB databases to unidirectional non-HALDB databases
- Physically paired HALDB databases to physically paired non-HALDB databases
Fallback from HALDB maintains the order of physical twin segments, including segments that are non-keyed and those that have a non-unique key.
Primary indexes are re-created, not unloaded. Secondary indexes are re-created by the reload utility process. User data is not preserved.