Configuring and Writing REXX › Understanding the Global Variable Environment › What are Nonvolatile Variables?

What are Nonvolatile Variables?

Nonvolatile variables are disk-based. The names of files containing nonvolatile variables have .glv extensions. The following facts apply to nonvolatile variables:

• The CA Automation Point nonvolatile status variables reside in the AXC.GLV file. Those status variables can be identified by a special prefix (such as the built-in AXCDISK_ prefix) or by a user-defined prefix.
• You can specify one or more prefix values. To add or delete user-defined prefixes, go to Configuration Manager, and choose Expert Interface, Automation, and open the Non-Volatile Status Variables dialog.
• CA Automation Point reads the AXC.glv file—and loads its contents into memory—at start-up.
• Nonvolatile GLV variables reside in .glv files, the names of which correspond to variable group names. (For more information about variable groups, see What Is a Variable Group?.)
• You can specify one or more prefix values. To add or delete user-defined prefix values

Note: GLV creates backups of the .glv files in .glb files, the names of which correspond to variable group names.

Multiple REXX programs can access nonvolatile variables regardless of when the programs run. Also, nonvolatile variables are not lost even when CA Automation Point terminates or if you switch your workstation's power off.