How to fix the error ORA-00056: DDL lock on object ‘string.string’ is already held in an incompatible mode?

In this post, you’ll learn more about the Oracle ErrorORA-00056: DDL lock on object ‘string.string’ is already held in an incompatible mode with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-00056: DDL lock on object ‘string.string’ is already held in an incompatible mode

Reason for the Error ORA-00056: DDL lock on object ‘string.string’ is already held in an incompatible mode

An attempt was made to acquire a DDL lock that is already locked.

How to fix the Error ORA-00056: DDL lock on object ‘string.string’ is already held in an incompatible mode ?

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

This happens if you attempt to drop a table that has parse locks on it.