CICS VSAM Transparency for z/OS, Version 1.2


Enabling CICS access to a migrated data set

After a data set has been migrated to DB2®, you can enable access from CICS® programs.

The first step is to add an entry for the data set to the CICS VT data set table (DST). Then define the CICS VT drivers and any CICS VT exits to CICS, before running the VTMI CICS transaction to introduce the newly assembled DST. These steps are described in detail in the following section.

Entries in the DST with MSTATUS=INACT are not considered to be migrated to DB2. You use the VTMM transaction to switch the status between INACT and ACT. The status can be changed at any time, and persists while CICS is active. The VTMI RESTART COLD transaction reloads the DST from disk and resets the migration status to its definition in the DST.

Start of change You must add a DB2ENTRY entry for the transactions that access the migrated data set to enable the connection to DB2. This is explained in CICS DB2ENTRY entries. End of change

You should understand the operational aspects concerned with CICS VT migration by reading CICS VT operational and recovery considerations.





Last updated: December 6, 2013 20:43:10

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Timestamp icon Last updated: Friday, 6 December 2013


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