IBM 000-8697 Manual Do Utilizador
9-48
IBM Informix OnLine Database Server Administrator’s Guide
Two-Phase Commit and Logical Log Records
Heuristic Rollback Records
a heuristic rollback. (Refer to
rollback.) Since a heuristic rollback only occurs after the participant sends a
message that it can commit, and the coordinator sends a message to commit,
the first phase of this protocol is the same as that shown in
message that it can commit, and the coordinator sends a message to commit,
the first phase of this protocol is the same as that shown in
, the heuristic rollback is assumed to be the consequence of a long-
transaction condition that occurs at the Participant One (P1) OnLine database
server. Only the interactions between the coordinator and the P1 participant
are shown.
server. Only the interactions between the coordinator and the P1 participant
are shown.