Consegui
(Metalink, note id 66277.1):
As documented in the Oracle9i Database Concepts (9.2.0) manual, page 15-8:
For a function based index to be created, the following must be set.
QUERY_REWRITE_ENABLED = TRUE
QUERY_REWRITE_INTEGRITY=TRUSTED
COMPATIBLE must be 8.1.0.0.0 or greater (recommended to be set to the current
version of the database).
The user creating the index must be granted CREATE
INDEX and QUERY REWRITE, or CREATE ANY INDEX and GLOBAL QUERY REWRITE.
Resumindo tudo: Concedendo a GLOBAL QUERY REWRITE e a QUERY REWRITE funcionou.
Obrigado pela mão Ishii