Requirements for dynamic resource definition

To use dynamic resource definition (DRD), you must define a Common Service Layer (CSL) with at least Structured Call Interface (SCI) and Operations Manager (OM). If the IMSRSC repository is used, a Resource Manager (RM) is required.

You must also ensure that your system has a type-2 command interface, such as the TSO SPOC application, the Manage Resources application, or another application that interacts with the OM API.

Define one or more resource definition data sets (RDDSs) or an IMSRSC repository in which to save your dynamically defined MODBLKS resource definitions. To save your dynamically defined MSC resource definitions, define and use an IMSRSC repository.

If the IMSRSC repository is used to store resource definitions, DRD requires:
  • A CSL that contains SCI, OM, and RM.
  • A Repository Server (RS) address space.
  • IMSRSC repository data sets and RS catalog repository data sets defined to the RS address space.
  • A type-2 command interface such as the TSO SPOC or other OM interface, for DRD commands.
If RDDSs are used to store MODBLKS resource definitions, DRD requires:
  • A CSL that contains SCI and OM.
  • One or more RDDSs.
  • A type-2 command interface such as the TSO SPOC or other OM interface, for DRD commands.

The INITMOD procedure requires that you define either MODBLKSA or MODBLKSB to initialize the MODSTAT data set, even for an IMS that does not define the MODBLKS data set.

In a DRD for MODBLKS resources environment, the MODBLKS staging, active, and inactive data sets are no longer required. However, the Global Online Change utility (DFSUOLC0) requires that you define either MDBS=A or MDBS=B to initialize the OLCSTAT data set, even for an IMS that does not define the MODBLKS data set.