This illustration depicts an example of an in-doubt distributed transaction. In this example:

• SALES.ACME.COM is global coordinator and is in the prepared state.
• WAREHOUSE.ACME.COM is database server and is in the prepared state.
• HQ.ACME.COM is commit point site and has issued the commit request.

The failure occurs during the commit phase when a communication break between HQ.ACME.COM and SALES.ACME.COM disrupts the transaction.