System configuration

CDC for Db2® for z/OS® is installed on a z/OS source or target system. On a z/OS system, commands are submitted from the operator console, and appropriate messages are returned by CDC Replication to the operator console. This section describes the commands that can be issued from the console in source and target environments.

Management Console allows you to specify the tables to replicate and which target servers will receive the replicated data. In addition, you can identify the tables on the target server that will receive replicated data and the type of data transformations that you want to apply to the data. You can also use Management Console to monitor data replication activities. Although it is not shown in the figure below, Management Console can be installed on multiple workstations, and each session can interact with a z/OS system at the same time.

To initialize the replication environment on a z/OS system, the START command must be issued through the operator console. This initialization step can also be achieved by submitting a specific JCL batch job through the console or from a user terminal (to submit the job from a user terminal, the user that is logged on to the server must have been granted sufficient privileges).

Based on the tables and subscriptions that you have identified in Management Console, data residing on the source server can be replicated to different target servers. Appropriate CDC Replication software must be installed on each of these target servers so that replicated data can be directed to target tables and data transformations can be performed.

The figure below illustrates the connections between different systems in a replication configuration, and the flow of data from source to target environments.