General |
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Reduce or turn off CICS® trace |
CICS trace: performance considerations |
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Terminal, VTAM® and SNA |
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Implement VTAM high performance option processing |
Using the MVS high performance option (HPO) with VTAM |
Increase terminal scan delay |
Adjusting the terminal scan delay (ICVTSD) |
Minimize SNA terminal data flows |
Adjusting the number of transmissions in SNA transaction flows (MSGINTEG,
and ONEWTE) |
Reduce SNA chaining |
Using SNA chaining to segment large messages (TYPETERM RECEIVESIZE,
BUILDCHAIN, and SENDSIZE) |
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Task control considerations |
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Adjust maximum tasks (MXT) |
Setting the maximum task specification (MXT) |
Control certain tasks by transaction class |
Using transaction classes (MAXACTIVE) to control transactions |
Define CICS maps with device suffixes |
Using the device-dependent suffix option for BMS map suffixing |
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MRO/ISC considerations |
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Implement MVS™ cross-memory services with MRO |
CICS intercommunication facilities and performance: overview |
Implement MRO fastpath facilities |
CICS intercommunication facilities and performance: overview |
Implement MVS cross-memory services with shared database
programs |
Setting DBCTL minimum threads (MINTHRD) |
Use CICS intercommunication facilities |
CICS intercommunication facilities and performance: overview |
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Database considerations |
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Journaling |
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Increase activity keypoint frequency (AKPFREQ) value |
Setting the activity keypoint frequency (AKPFREQ) |
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Temporary storage and transient data |
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Increase temporary storage queue pointer allocations |
Tuning the use of CICS temporary storage (TS) |
Increase use of main temporary storage |
Tuning the use of CICS temporary storage (TS) |
Review the use of CICS transient data facilities |
Optimizing the performance of the CICS transient data (TD) facility |
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Miscellaneous |
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Use only required CICS monitoring facilities |
CICS monitoring facility: performance considerations |
Review use of required CICS recovery facilities |
CICS recovery: performance considerations |
Review use of required CICS security facilities |
CICS security: performance considerations |
Increase region exit interval |
Tuning the region exit interval (ICV) |
Review use of program storage |
Defining programs as resident, nonresident, or transient |
Prioritize transactions |
Prioritizing tasks |
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