transactional message
A message containing transactional data.
transactional shadowing
A process by which identical transactional data are written to separate disks often at separate sites to increase data availability in the event of site failure. See also disk shadowing.
two-phase commit
A database commit/rollback concept that works in two steps: 1. The coordinator asks each local recovery manager if it is able to commit the transaction. 2. If and only if all local recovery managers agree that they can commit the transaction, the coordinator commits the transaction. If one or more recovery managers cannot commit the transaction, then all are told to roll back the transaction. Two- phase commit is an