DB2 commands—DSNCRCT TYPE=COMD

The TYPE=COMD form of the macro is used to describe DB2® command threads used for processing DB2 commands only. Requests for a DB2 command thread are diverted to the pool if a DB2 command thread is not available.

If you code the DSNCRCT TYPE=COMD macro, you must place it immediately following the TYPE=INIT macro and before the TYPE=POOL macro.
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>>-DSNCRCT--TYPE=COMD--+------------------------+--------------->
                       |         .-USERID-----. |   
                       '-,AUTH=--+------------+-'   
                                 '-identifier-'     

>--+----------------------+--+----------------------+----------><
   |          .-0-------. |  |          .-0-------. |   
   '-,THRDM=--+---------+-'  '-,THRDA=--+---------+-'   
              '-integer-'               '-integer-'     

The TYPE=COMD form of DSNCRCT is optional; if you do not code it, the RCT automatically generates a TYPE=COMD entry with the following parameters:
         DSNCRCT TYPE=COMD,
                AUTH=USERID,
                THRDM=1,
                THRDA=1,
For a description of the TYPE=COMD parameters, see the same parameters in the description of DSNCRCT TYPE=ENTRY in Entries in resource control table—DSNCRCT TYPE=ENTRY

One reason you might want to change this generated default setting is to change the AUTH parameter to reflect the need to give users different responsibilities in operating the DB2 subsystem.