The following functionality is currently not supported, but maybe supported in future:
- XMLType.
- Table cluster related DDL.
- IOTs (index-organized tables).
- Switchover/failover/flashback.
- Non-standard redo log block size (including 4k on 11gR2 on Advanced Format disks).
- Object datatypes (includes ADT, VARRAY, nested tables etc.).
- Only English version is available. Different languages will be supported in the future.