PowerExchange requires modification to DBRC to allow the IMS synchronous ECCR to operate. This modification consists of including PowerExchange modules into the IMS RESLIB. The PowerExchange modules perform capture registration checks from the IMS DBRC address space.

If the BMC Software product BMC AMI Database Integrity for IMS is not installed, you must install the PowerExchange modification to DBRC. The PowerExchange modification creates a new load module by including load module DBICRX

vr

with IMS DBRC load module DSPCRTR0. The new load module, DBICRY

vr

, resides in the IMS RESLIB (SDFSRESL). The variable

vr

represents the version and release of the IMS system. In addition, load module DBICRT00 replaces DSPCRTR0 in the IMS RESLIB.

The following table lists the

hlq

.CRG.LOAD load module for each IMS version that is included with load module DSPCRTR0 to create the DBICRY

vr

load module:

Informatica strongly recommends using SMP/E to install the DBRC modifications. Using SMP/E instead of manual link-edits ensures that the appropriate modules are included when you apply IMS maintenance and prevents any interruption in change data capture operation.

PowerExchange provides a sample job to use SMP/E called CRGUMOD in

hlq

.SAMPLIB. This sample job contains two SMP/E USERMODs:

PowerExchange provides member CRGCLINK in

hlq

.SAMPLIB, which can be used instead of the SMP/E USERMODs. This sample JCL manually link-edits the DBICRX

vr

and the DBICRT00 modules to create the necessary combination load modules. The job places the resulting load modules in

hlq

.CRG.LOAD.