Supporting CCTL users with DBCTL databases

DBCTL is an IMS facility that allows access to DL/I full-function databases, HALDB, and data entry databases (DEDBs) from a subsystem called a coordinator controller subsystem (CCTL).

A CCTL is the transaction management subsystem that communicates with DBCTL using the database resource adapter (DRA).

Preparing a CCTL describes the installation tasks required of the CCTL to enable the DRA.

Related reading: See IMS Version 15.3 Communications and Connections for information about CCTL programming requirements for using the DRA interface and installation concerns related to IBM® CICS® Transaction Server for z/OS® as a CCTL.

Figure 1 illustrates the relationship of the DRA interface, CCTL, and DBCTL.

Figure 1. DRA interface to DBCTL
There is no additional descriptive information for this figure.

As part of the DBCTL definition process, you should consider CCTL requirements such as database, PSB, or buffer pools. For sample input for DBCTL stage 1 definition, see IMS DBCTL environment.

For a CCTL that is connected to DBCTL, LSO=S must be specified on the IMS procedure so that the DL/I separate address space (DLISAS) is used.