Reviewing the CICS data sets

Review the list of mandatory and optional data sets to select which ones to create in your CICS regions.

About this task

As you plan which CICS data sets to define, also consider whether to use data set encryption for any data sets for which z/OS® data set encryption is supported. See Planning for data set encryption.

Procedure

  1. You must define the following CICS data sets:
    Data set DDNAME Block or CI size (bytes) Record format Data set organization
    Auxiliary trace (See Setting up and using auxiliary trace data sets) DFHAUXT DFHBUXT 4096 F Sequential
    BTS local request queue. (See Local request queue data set) DFHLRQ 1024 and 2560 VB VSAM KSDS
    Catalogs (See Setting up and using catalog data sets) DFHGCD DFHLCD 8192 & 2048 VB VSAM KSDS
    CSD (See Setting up the CICS system definition data set) DFHCSD 8192 VB VSAM KSDS
    Dump (See Defining dump data sets) DFHDMPA DFHDMPB 32 760 (tape) or 1 track (DASD) V Sequential
    Messages and codes (See Defining the CMAC messages data set) DFHCMACD — V VSAM KSDS
    Temporary storage (See Setting up the temporary storage data set) DFHTEMP See Control interval size of temporary data set N/A VSAM ESDS
    Transient data extrapartition (See Defining extrapartition data sets)  From the DDNAME option in the resource definition From the BLOCKSIZE option in the resource definition From the RECORD FORMAT option in the resource definition Sequential
    Transient data intrapartition (See Defining the intrapartition data set) DFHINTRA See Size of the intrapartition data set N/A VSAM ESDS

    Temporary storage and transient data intrapartition data sets use control interval (CI) processing and therefore the record format is not relevant.

  2. You must define the following CICS data sets if you plan to use the equivalent functions:
    Data set DDNAME More information
    CDBM group command DFHDBFK Defining the CDBM GROUP command data set
    CICSPlex SM WUI server HTML template data set DFHHTML Specifying the WUI customizable view and menu help data set
    Debugging profiles data sets DFHDPFMB, DFHDPFMP, DFHDPFMX Setting up the debugging profiles data sets
    Link3270 bridge DFHBRNSF Defining DFHBRNSF
    Sample file FILEA for sample application programs FILEA The FILEA sample application programs
    WS-AT directory data set DFHPIDIR Defining the WS-AT data set