A recovery utility apparatus for expediting recovery time during failure of one
or more database data sets is provided. A backup copy restore utility is configured
to read and restore a backup copy of the database data set. A change accumulation
manager is configured to read detail records in an incomplete change accumulation
data set. A log manager is configured to read a log to derive updates subsequent
to a merge end point, wherein the updates are reflective of spill records. An image
copy restore utility is configured to apply the detail records to the backup copy
to thereby create a restored database data set. A database update manager is configured
to apply the updates to the restored database data set.