Hi Praveen,
SAVEPOINT in HANA refers to an event in the persistency layer (writing out changed data to the disk - something similar to e.g. the CHECKPOINT in Oracle DBMS).
What you seem to mean by SAVEPOINT is sub-transaction control, where you can rollback to a specific point in your open transaction.
This is currently not possible with HANA.
You either commit your transaction or you rollback.
- Lars