About InfoSphere Classic Change Data Capture for z/OS
IBM® InfoSphere® Classic Change Data Capture for z/OS® (InfoSphere Classic CDC for z/OS) is a replication solution that captures changes to non-relational mainframe data and delivers them to relational databases, producing an accurate relational replica of your mainframe data on supported target databases in near-real time.
With the InfoSphere Classic CDC for z/OS solution, you can replicate changes to a CDC Replication target engine and you can publish changes in a delimited format directly to IBM MQ.
To capture changes to your IBM IMS™ and VSAM data sources, InfoSphere Classic CDC for z/OS reads data from logs that the data source provides that describe the changes to your non-relational mainframe data. The source engine packages the changes as discrete change messages that contain a relational description of the insert, update, and delete operations on the data. It then sends the change messages to a CDC Replication target engine or sends change messages in a delimited format to MQ.
The CDC target engine delivers them in one of the following ways:
- Applies the changes to a supported target database
- Sends the changes to IBM InfoSphere DataStage® for transformation processing
The InfoSphere Classic CDC for z/OS solution requires the following software components:
Component | Function | |
---|---|---|
Source replication engine | InfoSphere Classic CDC for z/OS | The source engine is a Classic data
server that runs in its own z/OS address
space. The data server contains the services and other components
that manage replication and process changes. The data server manages change data capture and refresh processing by coordinating the components and activities that the following sections describe in greater detail:
|
Source replication engine configuration and administration tool | IBM InfoSphere Classic Data Architect | The GUI tool for InfoSphere Classic CDC for z/OS, which connects to the source engine from a client workstation to simplify configuration tasks and create table mappings. |
Target replication engine | InfoSphere Change Data Capture | The target engine receives change messages
from the source engine and applies the changes to the specified target
tables in the correct order. It also performs these additional functions:
|
Target replication engine configuration and administration tools |
|
Management Console configures and monitors
replication from a client workstation. Access Server is a server that Management Console connects to for authentication purposes. Access Manager creates datastores and users, assigns roles and privileges to users, and authenticates and connects users to datastores. |