The XES AutoEdit facility (XAE) allows you to resolve AutoEdit expressions on a Sysplex‑wide level, based on the utilization of Coupling Facility structures. These structures provide the required data sharing mechanisms among the different monitors participating in the Sysplex. These facilities together are called IOAPLEX.

When the XAE facility is active and running, IOAPLEX communicates and validates shared Variable Database variables (in E/CSA memory) registered as such during Control‑O or CTMCMEM monitor startup.

When deciding whether to utilize IOAPLEX or not, it is important to consider the IOA variable database, IOAVAR, and how it is going to be used. If IOAVAR is shared between more than one LPAR, it must be defined as XAE Type 2, and therefore IOAPLEX must be implemented.

Before implementing the XAE facility, do the following:

1. Understand the different types of AutoEdit XAE databases in order to be able to plan for the size of the required Coupling Facility structures.

   For details, see Types of XAE databases.

2. Plan for the size of the required Coupling Facility structures.

   Use the default values for the first (test) installation. This is described in Step 7.7 – Structure size calculation (optional).

3. Set up the parameters that enable XES processing and XAE processing.

   This is described in Step 7.8 – IOAPLEX parameters (optional).

4. Add the appropriate CMEM or Control‑O (or both) structures to your Coupling Facility resource manager (CFRM) policy.

   This is described in Step 7.10 – Adding IOA structures to the CFRM (optional).

   All monitors that will share Variable Databases must be of the same INCONTROL version.