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Status Future consideration
Workspace z/OS
Categories DFSMS VSAM
Created by Guest
Created on May 29, 2018

RELATED IDEAS

Improved support for SMB-related parms via DYNALLOC

We support customers who depend on the use of SMB and, specifically, SMBDFR=N. They have asked us to support continuous availability through the ability to detach & reattach certain VSAM files while the underlying platform (a started task) remains active. What this amounts to programmatically is a close, deallocate, reallocate & open sequence and what we've found is that at reallocate time it's not possible to specify the SMBDFR=N setting. Note that this is initally achieved via JCL thus:

XXCMNPMAST DD DISP=SHR,DSN=CMNDEV.CMNSYSX.&NAME..CMNPMAST,
XX AMP=('STRNO=255,SMBVSP=60M,ACCBIAS=DO,SMBDFR=N,MSG=SMBBIAS')

Note that the shareoptions for the VSAM files in question are 2,3.

The two avenues we investigated were the use of a particular data class and the passing of AMP= parms to dynalloc. What we found was confirmed by the IBM rep in the 72027,082,000 PMR and that is:

"While we agree that adding the AMP parameter to SVC99 would be a good thing, this will not happen quickly. Likewise adding SMBDFR and STRNO to
the data class would be a good thing, but again that will not happen quickly. Both of these additions/changes involve multiple components in
z/OS that would need to be coordinated and would depend on what and when resources are available. "

Idea priority Medium
  • Guest
    Reply
    |     Apr 9, 2020

    .We have a design in progress, but we cannot commit to delivery at this time.

  • Guest
    Reply
    |     Aug 27, 2018

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - z Systems Software
    Product - z/OS
    Component - DFSMS VSAM
    Operating system - IBM z/OS
    Source - ISV (Independent Software Vendor)

    For recording keeping, the previous attributes were:
    Brand - Servers and Systems Software
    Product family - z Systems Software
    Product - z/OS
    Component - SMB File Support
    Operating system - IBM z/OS
    Source - ISV (Independent Software Vendor)

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