How to fix the Oracle error ORA-31523: could not find change source string for CDC change set string?

In this post, you’ll learn more about the Oracle ErrorORA-31523: could not find change source string for CDC change set string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-31523: could not find change source string for CDC change set string

Reason for the Error ORA-31523: could not find change source string for CDC change set string

The change source was missing for an imported Change Data Capture change set.

How to fix the Error ORA-31523: could not find change source string for CDC change set string ?

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

Drop the imported change set because it is invalid. Verify that the schema containing the missing change source was included in the original export. If needed, perform the export again, including the schema of the missing change source.