DFSDFxxx members and the IMS catalog in multi-system configurations

In a multi-system environment, you can define one or more IMS catalogs in a DFSDFxxx member.

When only a single IMS catalog is defined in a DFSDFxxx member, the attributes of the IMS catalog are specified in a single section after the section header <SECTION=CATALOG>. All IMS systems that use that DFSDFxxx member use that IMS catalog.

When multiple IMS catalogs are defined in a DFSDFxxx member, each IMS catalog is defined in a separate section. Each section is uniquely identified in the DFSDFxxx member by appending an IMS ID to CATALOG in the section header. For example, <SECTION=CATALOGIMS1>. The IMS ID also determines which IMS system uses the IMS catalog that is defined in that section.