DD statements for CICS data sets
The startup job step, DFHSTART, contains DD statements for the CICS data sets.
The IVP jobs include as comments the required DD statements for the Language Environment libraries.
| DD name | Description |
|---|---|
| SYSIN | SYSIN data set, containing the DFH$SIPn members that specify system initialization parameter overrides. |
| DFHCMACD | Messages data set, required for the CICS messages transaction, CMAC. |
| FILEA | Sample VSAM data set, required by the FILEA sample applications. |
| DFHTEMP | Auxiliary temporary storage data set, required by the FILEA sample applications. |
| DFHINTRA | Transient data intrapartition data set, required by the FILEA sample applications. |
| DFHAUXT
DFHBUXT |
First auxiliary trace (A) data set.
Second auxiliary trace (B) data set. The auxiliary trace data sets, DFHAUXT and DFHBUXT, are required
because the IVP jobs run with auxiliary trace switched on, and the auxiliary trace data set switching facility is set to switch once only. |
| DFHLCD | (Mandatory) CICS local catalog data set (VSAM), used by the CICS domains to save some of their information between CICS runs, and to preserve this information across a cold start. |
| DFHGCD | (Mandatory) CICS global catalog data set (VSAM) has a variety of uses, including: during a CICS run, holding resource definitions that are installed; and, during a controlled shutdown, recording part of the warm keypoint information. |
| DFHCXRF | Transient data extrapartition data set, used by CICS as the target for messages sent to any transient data destination before CICS has completed intrapartition transient data initialization. Use of this DDname is optional, but if it is not used, any messages that are written here are lost. |
| DFHLRQ | The local request queue data set is used to store pending BTS requests; for example, timer requests or requests to run activities. It is recoverable and used to ensure that, if CICS fails, no pending requests are lost. For more information, see Configuring for BTS. |
| LOGUSR | Data set for the extrapartition transient data destination, LOGA, used by the CICS sample programs. |
| MSGUSR | Data set for the extrapartition transient data destination, CSSL, used by a number of CICS services. |
| COUT | Data set for the extrapartition transient data destinations used by C/370 application programs. This data set is the destination for the C/370 output data streams, stdout (CCSO) and, indirectly, stderr (CCSE). |
| DFHDMPA DFHDMPB | First transaction dump (A) data set. Second transaction dump (B) data set. The dump data sets are included because CICS always tries to open a transaction dump data set, and issues a warning message if it is unable to do so for any reason. |
| DFHCSD | (Mandatory) CICS system definition data set (VSAM). |