Using a single PROC for Datacom Primary and Shadow MUF
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Using a single PROC for Datacom Primary and Shadow MUF
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Article ID: 129884
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Updated On: 03-10-2023
Products
DatacomDatacom/ADDatacom/DB
Issue/Introduction
Primary/Shadow configuration requires that each MUF region runs with its own PXX dataset, i.e. PXX cannot be shared between the two MUF regions.
How to use a single JCL deck to start both the members of a Primary/Shadow MUF pair?
Environment
Release : all
Component : Datacom/DB
Component : Datacom/AD
Resolution
Here are three possible options:
Eliminate the PXX dataset entirely from the JCL by using the execution parm NO_PXX. This parameter turns off all open and write functions to the PXX file, allowing that DD statement to be removed from the JCL. MUF startup option SYSOUT is required then. To use this, code the EXEC statement like this:
If the MUF STCs are running on the two different LPARs (e.g. TST1 and TST2), then two permanent datasets can be allocated with DSN names like: hlq.TST1.PXX hlq.TST2.PXX and then the PXX in the MUF startup can be referenced using the &SYSNAME variable: //PXX DD DSN=hlq.&SYSNAME..PXX