Compaq Reliable Transaction Router Common classes, Concurrent server, Data marshalling, Deadlock

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common classes

C++ foundation classes that can be used in both client and server applications.

concurrent server

A server process identical to other server processes running on the same node.

CPU

Central processing unit.

data marshalling

The capability of using systems of different architectures (big endian, little endian) within one application.

data object

See RTRData object.

deadlock

Deadly embrace, a situation that occurs when two transactions or parts of transactions conflict with each other, which could violate the consistency ACID property when committing them to the database.

disk shadowing

A process by which identical data are written to multiple disks to increase data availability in the event of a disk failure. Used in a cluster environment to replicate entire disks or disk volumes. See also transactional shadowing.

dispatch

A method in the C++ API RTRData class which, when called, interprets the contents on the RTRData object and calls an appropriate handler to process the data. The handler chosen to process the data is the handler registered with the transaction controller. This method is used with the event-driven receive model.

DTC

Microsoft Distributed Transaction Coordinator.

Glossary–3

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Contents Reliable Transaction Router Getting Started Page Contents Reliability Features Figures Page Preface Purpose of this DocumentDocument Structure For all users Related DocumentationReaders Comments Reading PathSystem Manager Application Programmer If V2 to= Tutorial Reliable Transaction Router IntroductionRTR 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 Database Server Application PresentationBusiness Logic Odbc Model RTR Frontend PC BrowserJournal Browser11 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 Server1 Server2 Server3 Server4 17 Concurrent ServersPartition a Transaction19 Bank Partitioning Example Standby Server Configurations Anonymous clients Tunnel RTR Networking Capabilities RTR Networking CapabilitiesPage Three-Layer Model Architectural ConceptsThree Layer Model Three-Layer ModelBroadcasts RTR Facilities Bridge the GapFlexibility and Growth RTR Facilities Bridge the GapFlexibility and Growth Transaction IntegrityPartitioned Data Model Object-Oriented ProgrammingPartitioned Data Model Partitioned Data Model Object-Oriented ProgrammingFunctional and Object-Oriented Programming Compared ObjectsExample 2-1 Objects-Defined Sample Messages Class RelationshipsPolymorphism Object Implementation Benefits XA Support XA SupportServers Reliability FeaturesFailover and Recovery Recovery ScenariosFailover and Recovery Recovery Scenarios Backend Recovery Router Recovery Frontend RecoveryPage RTR Interfaces RTR Management Station RTR Management Station RTR Create Facility DESIGN/ALLROLES=NODEA RTR RTRRECEIVEMESSAGE/TIME=0 RTR RTRSTARTTX/CHAN=C Interface Application Programming InterfacesRTR Browser Interface Application Programming InterfacesRTR C Example of an open channel call in an RTR client program RTR System Management Environment RTR EnvironmentRtrcomserv RTR System Management EnvironmentManagement Station Running Browser Software RTR System Management EnvironmentMonitoring RTR RTR Runtime Environment RTR Runtime Environment Client ApplicationOptional External Applet Not Running Whats Next? Whats Next?Page Glossary Broadcast BranchCallout server ChannelConcurrent server Common classesData marshalling Data objectEndian Fault tolerantEvent Event drivenInquorate FrontendJournal Key rangeMessage handler MessageMultichannel MultithreadedProcess PrimaryProperties Property classesRouter RollbackRTR configuration RTR environmentStandby ShadowTransaction Transaction controllerTwo-phase commit Transactional messageTransactional shadowing Index-1 IndexIndex-2