Customizing data tables using user exits

Three global user exit points are included in data table services. You can supply one or more assembler language programs to be executed at each of these points in order to extend or modify the function provided by CICS®.

Note: This section contains Product-sensitive Programming Interface and Associated Guidance Information.

CICS supplies sample user exit programs in the SDFHSAMP library for the XDTRD, XDTAD, and XDTLC global user exits. These programs, which are reproduced in this documentation, describe with samples of coding and data definition sequences the conventions used in user exit programs that are used with shared data tables. These samples are intended only as general guidance and do not define a programming interface.

Programming information about global user exits and how to use them is given in Global user exit programs.

Note: The EXEC interface user exits XEIIN and XEIOUT, and the file control user exits XFCREQ and XFCREQC, are not started in the file-owning region if a request to access a data table is satisfied by cross-memory services.