Exhaustion of DEDB DASD space
An out-of-space condition (with consequent stoppage of the DEDB area) can occur in the root addressable and sequential dependent portions of an area. Such situations affect the operation of the system as a whole and can necessitate lengthy recovery procedures.
The number of out-of-space conditions can be decreased by:
- Attempting to restrict the number of uses of independent overflow CIs through randomizing algorithm design or regular reorganization
- Deleting sequential dependent CIs on a regular basis
- Using display commands or DEDB POS calls to track space usage
An out-of-space condition can be relieved without bringing IMS down by following the procedures in Extending DEDB independent overflow online.