
10 Data Sharing in a Nutshell
subsystem, on-line transactions on a second subsystem, and batch
processing on a third subsystem. Then, during the hours when query and
on-line usage drop, you change buffer pool settings to favor batch on all three
DB2 subsystems. You can do the same at z/OS image level.
You can combine separate DB2 subsystems into a data sharing group to
allow application access to both sets of data, thereby reducing the costs of
managing the data and providing access to the data separately. One example
where this could be helpful might be in the case of an acquisition. Another
example might be where constraints in the past f ...