How to fix the Oracle error ORA-19161: XPTY0004 – XQuery type mismatch: invalid argument type ‘string’ for function ‘string’?

In this post, you’ll learn more about the Oracle ErrorORA-19161: XPTY0004 – XQuery type mismatch: invalid argument type ‘string’ for function ‘string’ with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-19161: XPTY0004 – XQuery type mismatch: invalid argument type ‘string’ for function ‘string’

Reason for the Error ORA-19161: XPTY0004 – XQuery type mismatch: invalid argument type ‘string’ for function ‘string’

The type of the argument that was passed to the given function was not valid.

How to fix the Error ORA-19161: XPTY0004 – XQuery type mismatch: invalid argument type ‘string’ for function ‘string’ ?

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

Fix the argument to be of a type supported by the given function.