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Multiple System Sharing of PDSEs z/OS DFSMS Using Data Sets SC23-6855-00 |
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Multiple systems in a sysplex that is running extended sharing
can concurrently access PDSE members for input and output, but not
for update-in-place. That is, multiple users on multiple systems can
simultaneously share the same PDSE for input, output, and update-in-place,
with the restriction that any particular member while being updated-in-place
can only be accessed by a single user.
Note: PDSE sharing between sysplexes is not supported.
A shared-access user of a PDSE can read existing members and create new members or new copies of existing members concurrently with other shared-access users on the same system and on other systems. Shared access to a PDSE during an update-in-place of a member is restricted to a single system. Programs on other systems cannot open the data set. Figure 1 shows the results of OPEN for UPDAT. Figure 1. OPEN
Success/Failure
Figure 2 shows the results of OPEN for UPDAT with positioning in a decision table. Figure 2. OPEN for UPDAT and Positioning to a Member Decision Table
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Copyright IBM Corporation 1990, 2014
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