Compaq Reliable Transaction Router manual XA Support

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XA Support

XA Support

The XA interface is part of the X/Open DTP (Distributed Transaction Processing) standard. It deﬁnes the interface that transaction managers (TM) and resource managers (RM) use to perform the two-phase commit protocol. (Resource managers are underlying database systems such as ORACLE RDBMS, Microsoft SQL Server, and others.) This interface is not used by the application programs; it is only used by TM-to-RM exchanges to coordinate a transaction.

For details on using XA, see the RTR C Application

Programmer's Reference Manual and the RTR Application

Design Guide.

2–10Architectural Concepts

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Contents Reliable Transaction Router Getting Started Page Contents Reliability Features Figures Page Document Structure PrefacePurpose of this Document Related Documentation For all usersReading Path Readers Comments= Tutorial System Manager Application ProgrammerIf V2 to Introduction Reliable Transaction RouterRTR Continuous Computing Concepts RTR Continuous Computing ConceptsRTR Terminology RTR TerminologyClient Symbol Server Symbol Roles Symbols Components in the RTR Environment Nontransactional messaging Transaction ID Controller Business Logic Odbc Model Database ServerApplication Presentation PC Browser RTR FrontendBrowser Journal11 RTR Deployed on Three Nodes 12 Standby Server Conﬁguration 13 Transactional Shadowing Conﬁguration RTR Server Types RTR Server TypesStandby server Standby in a cluster 15 Standby Servers 16 Shadow Servers 17 Concurrent Servers Server1 Server2 Server3 Server4Transaction Partition a19 Bank Partitioning Example Standby Server Conﬁgurations Anonymous clients Tunnel RTR Networking Capabilities RTR Networking CapabilitiesPage Architectural Concepts Three-Layer ModelThree-Layer Model Three Layer ModelRTR Facilities Bridge the Gap BroadcastsFlexibility and Growth RTR Facilities Bridge the GapTransaction Integrity Flexibility and GrowthPartitioned Data Model Partitioned Data ModelObject-Oriented Programming Object-Oriented Programming Partitioned Data ModelObjects Functional and Object-Oriented Programming ComparedMessages Class Relationships Example 2-1 Objects-Deﬁned SamplePolymorphism Object Implementation Beneﬁts XA Support XA SupportReliability Features ServersFailover and Recovery Failover and RecoveryRecovery Scenarios Backend Recovery Router Recovery Frontend Recovery Recovery ScenariosPage RTR Interfaces RTR Management Station RTR Management Station RTR Create Facility DESIGN/ALLROLES=NODEA RTR RTRRECEIVEMESSAGE/TIME=0 RTR RTRSTARTTX/CHAN=C Application Programming Interfaces InterfaceApplication Programming Interfaces RTR Browser InterfaceRTR C Example of an open channel call in an RTR client program RTR Environment RTR System Management EnvironmentRTR System Management Environment RtrcomservRTR System Management Environment Management Station Running Browser SoftwareMonitoring RTR RTR Runtime Environment Optional External Applet Not Running RTR Runtime EnvironmentClient Application Whats Next? Whats Next?Page Glossary Branch BroadcastCallout server ChannelCommon classes Concurrent serverData marshalling Data objectFault tolerant EndianEvent Event drivenFrontend InquorateJournal Key rangeMessage Message handlerMultichannel MultithreadedPrimary ProcessProperties Property classesRollback RouterRTR conﬁguration RTR environmentShadow StandbyTransaction Transaction controllerTransactional shadowing Two-phase commitTransactional message Index Index-1Index-2