To add the IOA structure entries to your CFRM policy, submit JCL that runs the administrative data utility that updates your policy data set. Include the syntax for the IOA entries in this JCL. A sample of these IOA entries follows. A copy of it can be found in the IOAXAESD member in the INSTWORK library.

Note: Specify structure size for the IOA structures in 1 KB blocks.

Figure 20 Adding IOA Structure entries to a CFRM policy

STRUCTURE NAME(ioaqname_XAELIST) 

       SIZE(size1)               

       INITSIZE(initsize1)       

       PREFLIST(cf01,cf02,cf03)  

       DUPLEX(DISABLED)          

STRUCTURE NAME(ioaqname_XAECACH) 

       SIZE(size2)               

       INITSIZE(initsize2)       

       PREFLIST(cf02,cf03,cf01)  

       EXCLLIST(ioaqname_XAELIST)

       DUPLEX(DISABLED)          

STRUCTURE NAME(ioaqname_XAELOCK) 

       SIZE(size3)               

       INITSIZE(initsize3)       

       PREFLIST(cf03,cf02,cf01)  

       EXCLLIST(ioaqname_XAECACH, ioaqname_XAELIST)

       DUPLEX(DISABLED) 

ioaqname is the value of the IOA QNAME parameter specified during IOA installation.

Note: XES does not accept embedded blanks in structure names. If the value of ioaqname is not eight characters in length, the default value will be the value of ioaqname padded with underscores (_) up to 8 characters. Adapt the structure name in your definitions accordingly.

You specify this name through ICE panels. If you want to use a name for a structure different from the default name, you will need to change the XAELSNM, XAECANM, and XAELKNM parameters in the IOAPLEX member.

For detailed information about the syntax of policy entries and the procedure to use when submitting JCL for policy updates, see the IBM document z/OS V1Rx MVS Setting Up a Sysplex. Your site may have specification conventions different from those shown above.

Consider the following when specifying your policy:

• To change structure size, you must first stop all CONTROLO and CTMCMEM monitors in the IOA installation. Make the appropriate policy change and then restart Control‑O or CMEM on each IOA computer in the Sysplex belonging to this IOA installation.
• It is worthwhile to put the structures in different Coupling Facility units. This allows for a maximum degree of request parallelism among the different tasks and avoids overloading structures.