How to fix the Oracle error ORA-29539: Java system classes already installed?

In this post, you’ll learn more about the Oracle ErrorORA-29539: Java system classes already installed with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-29539: Java system classes already installed

Reason for the Error ORA-29539: Java system classes already installed

An attempt was made to use the CREATE JAVA SYSTEM command in a database where the Java system classes already are installed.

How to fix the Error ORA-29539: Java system classes already installed ?

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

Use CREATE OR REPLACE JAVA SYSTEM.