Understanding the requirements of fallback

Before attempting to restore a HALDB database to a non-HALDB database, there are several requirements and considerations you should take into account.

The requirements for fallback include:

You must perform a concurrent fallback of all of the databases that are logically related.
If logical children or secondary indexes exist, prefix resolution and prefix update utilities must be installed on your system.
Before you can use the restored database, you must restore all of the related databases and secondary index databases.

Recommendation: Before you use the database, but after you reload and perform any prefix resolution or prefix updates, you should take an image copy of all data sets, including the primary index, by using one of the image copy utilities. The image copy utilities run DBRC to validate input and record results, which ensures that you have a backup copy of the database that can serve as an effective point of recovery in case of failure.