in the restart token must be equal to or less than the current end-of-log SCN
scn
.
The SCN in the restart token is not valid because it indicates a log position that is later than the current end-of-log SCN. This error might be caused by a CDC configuration error or by incorrect edits to the restart token value.
The CDC session ends abnormally.
If you manually edited the restart token, correct the token value. Also, verify that the PowerExchange configuration for the CDC session is correct, including the referenced PowerExchange instance, the CAPI_CONNECTION statement, and the Oracle Express READER parameters. Then start the CDC session again.