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CAIENF/DB2 Requirements

CAIENF/DB2 has the following installation requirements:

• CAIENF/DB2 supports all DB2 releases from DB2 R2.3.
• The load module DSNXAUTH cannot be loaded into LPA; if loaded, an ABEND occurs when CAIENF/DB2 is initialized. CAIENF/DB2 requires DSNXAUTH to be loaded into the private area so that subsystem can manage intercepts (not all subsystems require the intercept).
• The primary function of the CAIENF/DB2 interface is to handle release dependencies between different levels of DB2. This anticipates and prevents the need for changes to CA DB2 solutions that are otherwise necessary with each new release of DB2.
• CAIENF/DB2 uses approximately 20 KB of CSA for its own load modules. More storage, for units of work data, is obtained from extended CSA whenever possible. although some work storage is obtained from the individual user private area. The amount of extended CSA used is a function of the size and workload of the individual DB2 system.
• When a DB2 subsystem is started, CAIENF/DB2 gets control and queries the CAIENF-based applications for required exit points. Only the required exit points are installed. If no exit points are required, only the primary CAIENF/DB2 anchor is installed in the system. This anchor is not accessed again until the DB2 subsystem is terminated.

Note: For more information about CAIENF/DB2, see the Administration Guide.

The following lists the minimum storage requirements for each CAIENF/DB2 distribution library. This list does not necessarily represent the actual distribution library allocation that is provided during the installation.