Prepared transactions that were coordinated using the SYB2PC protocol are rolled forward or backward depending on the commit status of the master transaction.
During recovery, SAP ASE initiates contact with the commit service to determine the commit status of the master transaction, and commits or rolls back the prepared transaction accordingly. If it cannot contact the commit service, SAP ASE does not bring the database online. However, SAP ASE does proceed to recover other databases in the system.
This recovery method was used for SYB2PC transactions in earlier SAP ASE versions and is unchanged with SAP ASE version 12.5 and later.