DBRC

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         .-IMS-.   
>>-DBRC=-+-Y---+-----------------------------------------------><
         '-N---'   

DBRC
Specifies whether or not ZDT/IMS functions use Database Recovery Control (DBRC) when running in DLI mode.
IMS™
DBRC is used if the IMSCTRL macro statement specifies DBRC=YES or DBRC=FORCE. Otherwise, DBRC is not used.
Y
DBRC is used.
N
DBRC is not used, unless the IMSCTRL macro specifies DBRC=FORCE.

This parameter is optional. If it is not specified on the HFM1POPI macro statement, ZDT/IMS uses either the value specified on the HFM1POPD macro statement (if specified on that statement), or IMS (otherwise).

If you do not want the user to override the value you specify for this parameter, set UDBRC=N.