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SNAPSHOT UPGRADE FEATURE for IMS 6.2 ... Using Using snapshot processing How the DBMS type affects snapshot processing VSAM snapshots

VSAM SHROPTS requirements

Before targeting VSAM data sets for Snapshot Copy, ensure that the VSAM share options specified for each data set allow snapshot processing to occur.

XBM provides snapshot processing for targeted data sets with share options (3,3) or (2,3). Share options (3,3) allow multiple updates to targeted data sets during snapshot processing. Share options (2,3) allow a single update to targeted data sets during snapshot processing.

Although share options (1,3) allow snapshot processing to occur for targeted data sets, these share options allow no updates to run against the data sets during snapshot processing. Because no updates can occur, you gain none of the data availability benefit of snapshot processing.

Related topic

VSAM snapshots


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Last modified by Jyoti Birajdar on Jun 30, 2020
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Understanding the XBM utility program
Specifying VSAM options
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