Using the multiple installations

After the new release of the CICS Execution Option has been installed, you need to be able to distinguish between the multiple installations and then invoke them.

There are two ways to identify and run multiple installations of the CICS Execution Option depending on which method you use to invoke the CICS Execution Option.

  • If you invoke the CICS Execution Option through the EXEC CICS START command, Transient Data Queue trigger, or by entering the transaction ID at a terminal
    • use the transaction ID Dnnn (where nnn is the version of the release you have installed) and MERC or DSTX depending on the specific release you currently have installed.
  • If you invoke the CICS Execution Option through the EXEC CICS LINK command
    • use the DTXnnnKI (used with XPLINK) or DTXnnnCI program names (where nnn is the version of the release you have installed) for the new version of the CICS Execution Option and MERCCICS or DSTXCICS depending on the specific release you currently have installed.
      Note: If you do not need to use the multiple CICS Execution Option feature, you can use the alias name, MERCCICS for the program name for backward compatibility.