Infosphere Data Replication for Db2 Modernization Guide

Infosphere Data Replication for Db2 replicates data between Db2 for z/OS and other databases using Change Data Capture (CDC), Q Replication, SQL Replication, and Data Event Publishing. It consolidates functionality from previous products like InfoSphere Change Data Capture, InfoSphere Replication Server, and InfoSphere Data Event Publisher.

The main replication methods are Change Data Capture (CDC), which captures database changes in real-time; Q Replication, which uses WebSphere MQ for message queuing; SQL Replication, which uses SQL commands; and Data Event Publishing, which publishes database events.

Target databases include Db2 for z/OS, Db2 on other platforms (Linux, Unix, Windows), Oracle Database, and Microsoft SQL Server. This allows for heterogeneous replication scenarios.

Common commands include `dmcreate`, `dmdelete`, `dmshow`, and `dmload` for managing replication subscriptions. Configuration is primarily done through the Management Console and command-line interfaces.

Infosphere Data Replication exposes APIs, including REST APIs for programmatic control and monitoring. Communication protocols include TCP/IP and WebSphere MQ for Q Replication.

Key components include the Capture agent (captures changes), Apply agent (applies changes to the target), and the Management Console (for configuration and monitoring).

The Capture agent captures changes from the Db2 log. The Apply agent applies these changes to the target database. The Management Console provides a GUI for configuration and monitoring.

Replicating data to other platforms allows for offloading reporting and analytics, reducing the load on the production Db2 for z/OS system. It also enables data warehousing and business intelligence scenarios.

By replicating data to a separate system, you can minimize the impact of reporting and analytics queries on the performance of the production Db2 for z/OS database.

Authentication methods include LDAP, Kerberos, and certificate-based authentication. Access control is managed through role-based access control (RBAC).

Data is encrypted in transit using SSL/TLS. Data at rest can be encrypted using Db2's native encryption capabilities.

Audit logging captures user activity and system events. These logs can be used for security monitoring and compliance purposes.

Administrative interfaces include the Management Console (GUI) and command-line tools. User management is handled through the Management Console or through LDAP integration.

Key configuration parameters include connection parameters for source and target databases, replication frequency, and conflict resolution settings.

Monitoring capabilities include real-time monitoring of replication latency, error rates, and data volumes. Logging captures system events and errors.