How to fix the Oracle error ORA-19265: XQST0045 – invalid or unknown prefix string in function declaration?

In this post, you’ll learn more about the Oracle ErrorORA-19265: XQST0045 – invalid or unknown prefix string in function declaration with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-19265: XQST0045 – invalid or unknown prefix string in function declaration

Reason for the Error ORA-19265: XQST0045 – invalid or unknown prefix string in function declaration

The declared function name in a function declaration had no namespace prefix or had one of the predefined namespace prefixes other than local.

How to fix the Error ORA-19265: XQST0045 – invalid or unknown prefix string in function declaration ?

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

Fix the function declaration to have the correct prefix.