26029, 0000, "index %s.%s partition %s initially in unusable state"
* Cause: A partition of an index is in IU state prior to the beginning
* of a direct path load, it cannot be maintained by the loader.
* Action: Either rebuild index partition, re-create the index, or use either
* SKIP_UNUSABLE_INDEXES or SKIP_INDEX_MAINTENANCE (Sql*Loader only).