(1) A decision to force a commit or rollback of a logical unit of work in part of a transaction program network that is using the two-phase commit protocol. A heuristic decision is made when a system or communication failure prevents the logical unit of work from being completed.
(2) An action that is independent of the DB2 transaction manager to commit or roll back a transaction on a DB2 database.
(3) A decision that forces indoubt resolution at a participant by means other than automatic resynchronization between coordinator and participant.