Reopening DEDB areas during an emergency restart

You can specify how IMS reopens DEDB areas during an emergency restart by using the FPOPN= keyword in the IMS procedure or DBC procedure.

The following list describes how the FPOPN= keyword affects the reopening of DEDB areas during an emergency restart:

FPOPN=N

During the startup process, IMS opens only those areas that have preopen status. This is the default.

FPOPN=P

After the startup process completes and asynchronous to the resumption of application processing, IMS opens only those areas that have preopen status.

FPOPN=R

After the startup process completes and asynchronous to the resumption of application processing, IMS opens only those areas that were open prior to the abnormal termination. All DEDB areas that were closed at the time of the abnormal termination, including DEDB areas with a preopen status, will remain closed when you restart IMS.

FPOPN=D

Suppresses the preopen process. DEDB areas that have a preopen status are not preopened and remain closed until they are first accessed by an application program or until they are manually opened with a /START AREA command.

FPOPN=D overrides, but does not change, the preopen status of DEDB areas as set by the PREOPEN parameter of the DBRC commands INIT.DBDS and CHANGE.DBDS.