Parameters for Facilities › Global Variable Parameters › GLOBALMAX Parameter

GLOBALMAX Parameter

This parameter determines the maximum number of global variable blocks that CA OPS/MVS can create.

Sizes of global variables vary, with some global variables taking up more than one block. Typically, the number of global variables in use at a site is less than the number of global variable blocks specified by GLOBALMAX.

When determining the value of the GLOBALMAX parameter, be sure to take into account these CA OPS/MVS facilities and the global variables they create:

• AOF-Consider all TOD rules that require catch-up processing. This is important because for each CATCHUPYES or CATCHUPMAN rule, CA OPS/MVS creates a variable with the value of the CATCHUPGLVPREFIX parameter as its stem.

  Note: For a description of the CATCHUPGLVPREFIX parameter, see CATCHUPGLVPREFIX Parameter in this chapter.

• RDF-The CA OPS/MVS RDF and System State Manager features require space for global variables. CA OPS/MVS implements its relational tables as a set of global variables. One global variable stores one row of a relational table, which you access through SQL statements.

Note: If you are using CA OPS/MVS to schedule a backup and restore of your global variable database, make sure you take a new backup immediately after changing the value of the GLOBALMAX parameter. For more information, see the Administration Guide.

Default value

10,000 (variable blocks)

Other possible values

Any number greater than 1, but the value must be higher than the current high used block in the database; if it is not, then CA OPS/MVS issues a warning message (OPS0185W) at startup. To decrease the size of the database:

1. Stop CA OPS/MVS.
2. Delete the global variable DIV data set.
3. Allocate a new global variable data set.
4. Restart CA OPS/MVS and use a smaller GLOBALMAX value.

You can increase the value of GLOBALMAX if the DIV data set contains enough space.

Set or modify this parameter...

At initialization

Example: GLOBALMAX

This function limits CA OPS/MVS to generating 3000 global variable blocks.

OPSPRM('SET','GLOBALMAX','3000')