Question : Grant all to a user doesn't grant create index privilege

I did this: grant all on my_table to my_user.  But, my_user still cannot create an index on my_table.  Why?  I thought grant all include index privilege.  Thanks.

GRANT ALTER, DELETE, INDEX, INSERT, REFERENCES, SELECT, UPDATE, ON COMMIT REFRESH, QUERY REWRITE, DEBUG, FLASHBACK ON ,my_table TO my_user;

Answer : Grant all to a user doesn't grant create index privilege

They will also require the CREATE ANY INDEX privilege.

I assume they already have the CREATE ANY TABLE privilege to allow them to create tables in a schema other than their own.