zSecure CICS Toolkit restart

Normally, after doing all the required updates and definitions for the installation, you must restart the CICS system to activate all the changes. For the initial installation, the restart is required to activate, for example, the SRT definitions. You can combine this activation with the system IPL that is required to pick up the definition of the zSecure CICS Toolkit SVC.

zSecure CICS Toolkit internally uses MVS™ subtasks. Normally, these subtasks are started during CICS initialization by a PLT program. These MVS subtasks are detached again at CICS termination by a second PLT program. Restarting CICS is the preferred method for this part of the installation process.

If all the required definitions are in place, but restarting CICS is not possible, you can use the following alternative method instead.

Attention: If you use this process to do the initial activation of zSecure CICS Toolkit, you must also use this process to deactivate it before you shut down the CICS system. Failure to do so results in A03 abends, probably followed by a system memory dump.

If the zSecure CICS Toolkit SVC is not installed, and the CICS SRT definition is not activated, attempts to install the software subtasks might result in a terminating abend of the CICS Started Task.

Sometimes, an error occurs during execution of the zSecure CICS Toolkit programs. Some of these errors result in the termination of one of the MVS subtasks that are used for zSecure CICS Toolkit processing. Current versions of the zSecure CICS Toolkit provide a transaction for stopping and restarting the MVS subtasks. Previous versions require a manual process. This manual process is described in Manual restart of the zSecure CICS Toolkit subtasks.