Exit routine modifications and HALDB databases

For most exit routines that you can use with HALDB databases, the methods for modifying them are no different from modifying exit routines for a non-partitioned database.

You make most specifications for HALDB exit routines in the database definition statements and not in the RECON data set. Exceptions to this rule are modifications to a partition selection exit routine or the PHDAM randomizing modules, which you can specify in both the DBD and in the RECON data set. Specifications in the RECON data set override any specifications made in the database definition.

With the exception of PHDAM randomizing routines, any changes you make to database exit routines apply to the whole HALDB database and all of its partitions.

After you make changes to some exit routines, such as PHDAM Randomizing routines or partition selection exit routine, consider reorganizing your database.

The exit routines that are commonly used with HALDB databases include:

  • HALDB Partition Selection exit routine
  • Data Capture exit routine
  • Data Conversion User exit routine
  • Segment Edit/Compression exit routines
  • Secondary Index Database Maintenance exit routine
  • HDAM and PHDAM Randomizing routines