TMF Glossary (G06.26+)

TMF Glossary

HP NonStop TMF Glossary—522415-003

Glossary-9

gateway

gateway. A process or set of processes that supports distributed transaction processing by

providing communication between different transaction-processing environments. In a

NonStop Kernel operating system environment, a gateway supports communication

between TMF and a foreign transaction manager.

gateway process. In heterogeneous transaction processing, an individual process that

executes a resource manager routine to export a transaction branch from TMF to a

foreign transaction management system, import a transaction branch from a foreign

transaction management system to TMF, and participate in the closing agreement

protocol between the two transaction management systems.

generation. A file or group of files in an online dump that are dumped at a certain time.

Each generation provides a starting point for the file recovery process. Earlier

generations of online dumps provide earlier starting points. Each generation of a file on

tape has a different serial number; each file in an online dump generation has the

same serial number.

group commit. A mechanism for writing audit records for many transactions with one

physical access.

heterogeneous transaction. A transaction that is processed by different types of

transaction managers operating on multiple platforms. In heterogeneous transaction

processing TMF can start a transaction and then subcontract parts of it to one or more

foreign transaction management systems operating on platforms other than the

NonStop system. Alternatively, a foreign transaction management system can begin a

transaction and then subcontract parts of it to TMF.

home node. The system (node) where a BEGINTRANSACTION statement for a distributed

transaction is executed. Contrast with remote node.

homogeneous transaction. A distributed transaction that is processed by the same type of

transaction manager operating on the same platform.

hung transaction. A transaction that cannot be successfully aborted. The backout process

has attempted, but failed, to abort it.