Mixed mode processing

IMS application programs can run as message processing programs (MPPs), batch message processing programs (BMPs), and Fast Path programs (IFPs).

IFPs can access full function databases. Similarly, MPPs and BMPs can access DEDBs and MSDBs.

Because of differences in sync point processing, there are differences in the way database updates are committed. IFPs that request full function resources, or MPPs (or BMPs) that request DEDB (or MSDB) resources operate in “mixed mode”.