OPSVIEW Control Option › How to Control Global Variables (Option 4.8)

How to Control Global Variables (Option 4.8)

A global variable is a special compound symbol that is shared by TSO address spaces, servers, batch jobs, and OPS/REXX programs (including AOF rules). CA OPS/MVS supports two types of global variables-standard and temporary.

A standard global variable has these characteristics:

• It is nonvolatile, which means that it is saved across system IPLs and CA OPS/MVS restarts.
• It is implemented as a REXX compound symbol. You can distinguish it from other compound symbols by its stem; the stem will be either GLOBAL or GLOBALx, where x is an alphanumeric character (A-Z, 0-9).

A temporary global variable has these characteristics:

• It is volatile, which means that it is not saved across system IPLs and CA OPS/MVS restarts. When CA OPS/MVS is started, the pool of temporary global variables is always empty.
• It is implemented as a REXX compound symbol. You can distinguish it from other compound symbols by its stem. The stem will be either GLVTEMPx, where x is an alphanumeric character (A-Z, 0-9), GLVEVENT, or GLVJOBID.

Note: A global variable name can be up to 84 bytes long.