IBM SC33-1683-02 - Manual (Page 629)

The sample contains an example, as part of a comment, of how to enable and how
to disable a transaction. To use the program, it is necessary for transactions using
DBCTL to be defined in the CSD as DISABLED.
You can code your own CICS–DBCTL interface status program in any of the
languages supported by CICS. For information about the job control statements
necessary to assemble and link-edit user-replaceable programs, refer to
“Assembling and link-editing user-replaceable programs” on page 402.
the CICS–DBCTL interface status program
Chapter 18. Writing a CICS–DBCTL interface status program 597