Spill data space management

IMS Database Recovery Facility reads change accumulation records and holds them in the RSS until the data is needed for the data set restore process.

If there is more data to be held than can fit in the address space, it is spilled into one or more data spaces.

You can control the size of the data spaces that are allocated by setting SPSIZE in the FRXDRFxx member.

Choosing a smaller size can result in additional data spaces being allocated if the data will not fit into the initial data space.

Smaller data space sizes can result in more efficient paging device utilization if the amount of spill-data fits into the initial data space because data space storage requires backing up data on paging devices.