PDIRs

A directory of program specification blocks (PDIR) is a list of program specification blocks (PSBs) that define, for DL/I, the use of databases by application programs.

Your CICS® region needs a PDIR to access a database owned by a remote CICS region (remote DL/I support). Your CICS region does not need a PDIR to access a DL/I database owned by DBCTL. For information about accessing DL/I databases owned by DBCTL, see the "Performance benefits of DBCTL" topic in the CICS IMS™ Database Control Guide .

The modules providing remote DL/I support are automatically loaded by CICS during startup when a DL/I PSB directory is specified via the PDIR= system initialization parameter. A PDIR is mandatory for remote DL/I support, but not required for database control support.

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