Overview of groups and database ownership
A database group associates related databases, partitions, or areas into a single unit so that actions can be initiated against every item in the group.
You can create a database group that is based on one (or a combination) of the following criteria:
- DBD name
- Change accumulation group name
- Database data set group name
You can qualify these criteria by specifying a partition name for HALDBs or an area name for DEDBs.
You can create database groups during the Auto Configure process when you define an IMS database administration environment. You can also create database groups manually.
A single database can belong to multiple database groups. Depending on the criteria that you specify when you create your database groups, a single database may meet the criteria for several groups. However, only one group can own the database. If parameter changes are made to a group, those changes are not inherited by databases that are owned by a different group.
Database ownership ensures the integrity of parameters that are defined for all database objects and for all objects that are subordinate to databases (partitions, areas, and data sets). Protected parameters include analysis options (such as thresholds and goals) and site values (such as job control information). To customize a parameter for a database that belongs to more than one database group, you must select the database object that is displayed under the owning database group on the tree.