How to fix the Oracle error KUP-04081: field string used in concatenation for column string is not a character type?

In this post, you’ll learn more about the Oracle ErrorKUP-04081: field string used in concatenation for column string is not a character type with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

KUP-04081: field string used in concatenation for column string is not a character type

Reason for the Error KUP-04081: field string used in concatenation for column string is not a character type

The specified field was part of a concatenation of strings used to create the value for the names column. However, the field was not of a character datatype. Only character fields may be used as part of concatenating fields.

How to fix the Error KUP-04081: field string used in concatenation for column string is not a character type ?

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

Verify the correct field was used in the CONCAT clause. Also verify that the correct datatype is specified for the field in the field list.