Using GDGs and symbolic variables when multitasking

When the GDG base names do not contain adequate symbolic variables to make the GDG names unique, multitasking might cause cataloging difficulties. With BMC AMI Copy spaces might be copied concurrently in several task areas and the non-unique GDG name can cause this issue.

Related topic

Using-GDGs-and-symbolic-variables-in-data-set-names

BMC AMI Copy handles GDG name processing for the disk. However, controlling tape GDG name assignment is more difficult because tapes are not assigned at allocation time. For tapes, when BMC AMI Copy encounters a poorly constructed GDG name, an informational message is issued that indicates a issue might occur.

Example

Example of a poorly constructed GDG name:

DSNAME INVENTRY.GDG(+1)
Example

Example of a well-constructed GDG name:

DSNAME INVENTRY.&DB.&TS.&TYPE&PART.GDG(+1)

You need the &TYPE variable only when you designate more than one output type (LP, LB, RP, or RB) for the COPYDDN and RECOVERYDDN options.

 

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