Please help me on BT/ET and ROLLBACK/ABORT - response (3) by ulrich

Hm,
what you do is
1. Begin a transaction
2. Ins/select - at the end of the Ins/Select the transaction is still open.
3. End the transaction (Insert / Select is commited)
4. Rollback - What do you expect to be rolled back after the ET?
 
Rollback is mainly used within a transaction with some conditional logic.
So whats your intention?