How to fix the Oracle error ORA-30647: error retrieving access parameters for external table string.string?

In this post, you’ll learn more about the Oracle ErrorORA-30647: error retrieving access parameters for external table string.string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30647: error retrieving access parameters for external table string.string

Reason for the Error ORA-30647: error retrieving access parameters for external table string.string

an error occurred when fetching the access parameters for the specified external table.

How to fix the Error ORA-30647: error retrieving access parameters for external table string.string ?

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

If the access parameter is a query which returns a CLOB, check EXTERNAL_TAB$ to make sure the query is correct.