How to fix the Oracle error ORA-13798: Parameter string cannot be NULL.?

In this post, you’ll learn more about the Oracle ErrorORA-13798: Parameter string cannot be NULL. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-13798: Parameter string cannot be NULL.

Reason for the Error ORA-13798: Parameter string cannot be NULL.

A call to GET_THRESHOLD procedure was made without a required parameter.

How to fix the Error ORA-13798: Parameter string cannot be NULL. ?

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

Specify a valid value for this parameter.

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