Chapter 1. Overview 13
The address spaces that can participate in the IMSplex are:
Control region address spaces (CTL and DBRC)
CSL address spaces (Operations Manager (OM), Resource Manager (RM), Structured
Call Interface (SCI))
IMS server address spaces (CQS)
Batch and utility regions using DBRC
Automated operator programs and SPOCs
Address spaces that serves as an interface between IMS and a protocol that is not directly
supported by IMS (for example, TCP/IP)
Examples of IMSplexes are:
A set of IMS control regions at the Version 6, 7 or 8 level without a CSL that are sharing
data or sharing message queues
A set of IMS control regions at the Version 8 level with a CSL that are sharing data or
sharing message queues
A single IMS control region at the Version 8 level with a CSL. This still qualifies as an
IMSplex because it is a set of IMS address spaces (IMS control, CQS, SCI, OM, RM)
To support IMSplexes, a number of IMS functions have been enhanced and a number of new
functions have been added.
The Base Primitive Environment (BPE) has been enhanced.
The Common Queue Server (CQS) has been enhanced.
A new component, the Common Service Layer (CSL), is introduced consisting of the
following three new address spaces:
– Operations Manager (OM)
– Resource Manager (RM)
– Structured Call Interface (SCI)
Optional Resource Structure.
A TSO-based single point of control (SPOC) application program and a REXX API is
shipped with IMS Version 8.
The IMS terminal management function of IMS TM has been enhanced.
A new coordinated online change function has been added to coordinate global online
change activities of all the IMSs in the IMSplex.
The following sections briefly describe the enhancements that support the new IMSplexes
and the other systems management enhancements.
1.4.1 BPE enhancements
The Base Primitive Environment (BPE) has been enhanced to support the three new CSL
address spaces. Two new optional exits have been added and a new BPE command,
DISPLAY VERSION, which displays the version number of both the IMS component and the
BPE, is introduced.
Additional information on the Base Primitive Environment enhancements can be found in
Chapter 11, “Base Primitive Environment enhancements” on page 143.