How to fix the Oracle error ORA-23629: string.string is not an eligible index on table string.string for comparison?

In this post, you’ll learn more about the Oracle ErrorORA-23629: string.string is not an eligible index on table string.string for comparison with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-23629: string.string is not an eligible index on table string.string for comparison

Reason for the Error ORA-23629: string.string is not an eligible index on table string.string for comparison

The specified index was not an eligible index to use for comparison.

How to fix the Error ORA-23629: string.string is not an eligible index on table string.string for comparison ?

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

For a table to be compared using DBMS_COMPARISON, the table must have an appropriate index. Please specify an eligible index for the table to be compared.