Getting started with new and changed system initialization parameters

Here is a simple way of migrating with the changes to system initialization parameters described above:

Use the default system initialization table
The unsuffixed default system initialization table (DFHSIT) is supplied in the CICS® SDFHAUTH library. You can use this to start a CICS region using the default values -- CICS loads DFHSIT by default if there is not a SIT parameter in your JCL.
Override defaults using the SYSIN data set
To override default values, specify system initialization parameters in a permanent member of a SYSIN data set.

You can vary these easily during testing, avoiding the need to reassemble suffixed system initialization tables. Nearly all system initialization parameters entered at run time are used even on a warm start (the exceptions are the FCT and CSD parameters).

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