Condensing the accumulated SLDS or RLDS (change accumulation)
The Database Change Accumulation utility offers you a way
of sorting through your accumulated log data sets in advance, merging
and condensing them.
This utility:
Merges updates from different subsystems
Picks out only those log records relating to recovery of databases
Sorts these records by data set within a database
Saves only the most recent state of each changed part of each
data set.
The following figure illustrates how the Database Change Accumulation
utility merges the relevant log data (a, b, and c) from 3 different
SLDSs (A, B, and C), from one IMS system,
into one change accumulation data set record. Figure 1. What change accumulation does with redo data from
divergent data streams
