Changes to control tables

This section summarizes the changes to CICS® control tables across supported CICS TS releases. For each CICS release, you must reassemble all tables by using the latest macros, even if there are no changes to the macros. From CICS TS 5.3 onwards, CICS checks during initialization whether the macro tables that it is loading have been reassembled, and if they have not been reassembled, message DFHLD0110 is issued and CICS terminates.

If you are upgrading from an end-of-service release, you can find information about the changes that are relevant to those releases in Summary of changes from end-of-service releases.

Highlights of changes across supported releases of CICS TS

Table 1 lists changed control tables in each supported CICS TS release. The links provided take you to the relevant tables below where brief descriptions of the changes are provided.

Table 1. Changed control tables in each supported CICS TS releases
5.6 6.1 6.2 CICS TS 6.3
     

Changes to control tables by release of CICS TS

View changes by control table:

DFHXCOPT

5.6 6.1 6.2 CICS TS 6.3
CHANGED:
  • The EXCI SURROGCHK parameter is removed. Surrogate checking is always done. Specifying SURROGCHK=YES in the EXCI options table, DFHXCOPT, is accepted for compatibility.
  • The default for the CONFDATA parameter is changed to HIDE. The HIDE option replaces HIDETC, which means that all transport data is subject to CONFDATA. If the deprecated CONFDATA=HIDETC is specified in DFHXCOPT, CONFDATA=HIDE is assumed and no message is issued.
    

Related information

For information about SIT parameters, see Changes to SIT parameters.