16.10 - Controlling Memory Usage - IBM CICS Interface for Teradata

IBM CICS Interface for Teradata Reference

Product
IBM CICS Interface for Teradata
Release Number
16.10
Published
May 2017
Language
English (United States)
Last Update
2018-10-12
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The CICS interface provides a mechanism to monitor and control CLI use of memory.

In particular, CICS getmain/freemain overhead can be reduced by using the HSHSPBC and the DMEM command to maintain a number of control blocks and buffers on a free chain to satisfy application requests.

When allocating memory, CLI first attempts to satisfy the request from the free chain.

If the chain is empty, a CICS getmain is used to obtain the memory.

Statistics are maintained and are displayed with DMEM to monitor and control CLI memory usage. Refer to Controlling Memory.