Oracle Error ORA-38448: Indexing predicates with “string” operator is not supported.

Oracle Error Message

ORA-38448: Indexing predicates with “string” operator is not supported.

Reason for the Error

An unsupported operator was used in the exf$indexoper array.

Solution

Choose the operators from this list : =, , =, !=, is null, is not null, nvl, and between.