Compaq Reliable Transaction Router manual RTR System Management Environment, Rtrcomserv

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The RTR System Management Environment

•Handles all transactions and recovery

RTRACP handles interprocess communication trafﬁc, network trafﬁc, and is the main repository of runtime information. ACP processes operate across all RTR roles and execute certain commands both locally and at remote nodes. These commands include:

•FACILITY

•SET LINK/NODE

•SET/CREATE PARTITION

•SHOW NODE

•STOP RTR

RTR CLI is the Command Line Interface that:

•Accepts commands entered locally by the system manager

•Sends commands to the Command Server Process

RTRCOMSERV

•Can initiate commands on one node and execute them on another in most cases

Commands executed directly by the CLI include:

•DISPLAY

•DO (to the local operating system)

•MONITOR commands

•RECALL

•SET ENVIRONMENT

•SPAWN

•HELP

RTR COMSERV is the Command Server Process that:

•Receives commands from RTR

•Remains temporarily waiting for another command

•Exits automatically when idle for some time

5–2The RTR Environment

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Contents Reliable Transaction Router Getting Started Page Contents Reliability Features Figures Page Preface Purpose of this DocumentDocument Structure Related Documentation For all usersReading Path Readers CommentsSystem Manager Application Programmer If V2 to= Tutorial 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 Database Server Application PresentationBusiness Logic Odbc Model 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 Object-Oriented ProgrammingPartitioned Data Model 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 Recovery ScenariosFailover and Recovery 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 RTR Runtime Environment Client ApplicationOptional External Applet Not Running 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 controllerTwo-phase commit Transactional messageTransactional shadowing Index Index-1Index-2