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Region customization parameters are stored in a virtual file system (VFS) data set, which is a virtual storage access method (VSAM) data set and is not easy to update outside of CA NetMaster NM for TCP/IP. However, a RUNSYSIN member can point to an initialization file member in TESTEXEC by using the INIFILE parameter.
An initialization file is a Network Control Language (NCL) procedure that contains the parameter information.
When an initialization file is in use, the region gets the parameter information from the file at startup and updates the VFS data set. Because the region uses the initialization file each time it starts up, any changes you make manually using the /PARMS panel shortcut are not retained. To keep the changes, regenerate the file using the /CUSTOM.G panel path.
Even if you do not use the initialization file for region startup, you can use it as a backup of the parameters in the VFS data set by generating it before updating the parameters using /PARMS.
The initialization file is also useful during rollout to other systems because it is relatively simple to update for different systems. Through the use of product variables and system symbols, the file can be made generic enough for all the regions you plan to deploy.
Note: For more information about how to use a region initialization file, see the Administration Guide.
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