How to fix the Oracle error ORA-18161: FTST0002 – FTUnaryNot operator not supported?

In this post, you’ll learn more about the Oracle ErrorORA-18161: FTST0002 – FTUnaryNot operator not supported with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-18161: FTST0002 – FTUnaryNot operator not supported

Reason for the Error ORA-18161: FTST0002 – FTUnaryNot operator not supported

An implementation that enforces one of the restrictions on FTUnaryNot must raise a static error if a full-text query does not obey the restriction.

How to fix the Error ORA-18161: FTST0002 – FTUnaryNot operator not supported ?

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

Do not use the FTUnaryNot full-text query operator.