Number of Instances Required
- You can have multiple instances of InfoSphere CDC running on the same server, each would have its own copy of storage, metadata, etc.
- A separate InfoSphere CDC instance is required for each database that you want to replicate from, except in the case where a single instance is being used as both a source and a target
Additional instances may be required for the following reasons:
- If you hit the maximum number of subscriptions for a single instance
- If you have extremely large log volume and you need to split the source into multiple instances. For further information on this situation, please refer to the performance tuning presentation