How to fix the Oracle error ORA-54521: inner ring is not inside or is touching outer ring more than once?

In this post, you’ll learn more about the Oracle ErrorORA-54521: inner ring is not inside or is touching outer ring more than once with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-54521: inner ring is not inside or is touching outer ring more than once

Reason for the Error ORA-54521: inner ring is not inside or is touching outer ring more than once

An inner ring either was not inside its outer ring or touched its outer ring more than once.

How to fix the Error ORA-54521: inner ring is not inside or is touching outer ring more than once ?

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

Ensure that the inner ring is inside its outer ring and does not touch the outer ring more than once. If an inner ring touches its outer ring more than once, then the outer ring is no longer a topologically simple or singly connected polygon (ring).