How to fix the Oracle error ORA-26840: Combined capture and apply optimization is disabled because string is unable to identify an apply for the source database “string”.?

In this post, you’ll learn more about the Oracle ErrorORA-26840: Combined capture and apply optimization is disabled because string is unable to identify an apply for the source database “string”. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-26840: Combined capture and apply optimization is disabled because string is unable to identify an apply for the source database “string”.

Reason for the Error ORA-26840: Combined capture and apply optimization is disabled because string is unable to identify an apply for the source database “string”.

There were multiple Streams apply processes using the same queue which made combined capture and apply (CCA) optimization not possible.

How to fix the Error ORA-26840: Combined capture and apply optimization is disabled because string is unable to identify an apply for the source database “string”. ?

You can fix this error in Oracle by following the below steps

If Streams performance is an issue, check the “Combined Capture and Apply Optimization” chapter in the “Oracle Streams Concepts and Administration” book. Then reconfigure the Streams processes to meet this optimization’s requirements.