How to fix the Oracle error ORA-25957: join index where clause cannot contain cycles?

In this post, you’ll learn more about the Oracle ErrorORA-25957: join index where clause cannot contain cycles with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-25957: join index where clause cannot contain cycles

Reason for the Error ORA-25957: join index where clause cannot contain cycles

An attempt to create a join index was made, which failed because the where clause contains a cycle.

How to fix the Error ORA-25957: join index where clause cannot contain cycles ?

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

Ensure that the where clause is in the form of a star or snowflake schema.