Availability Guide for Application Design

Improving Availability on the Internet
Availability Guide for Application Design—525637-004
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Specific Enhancements
balancing and configuration options. The WS Plug-in also supports web
applications that utilize session-based dialogs.
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Avitek Medical Records (or MedRec) sample application suite that works with the
WebLogic Server.
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Documentation for supporting various software pieces that form the NonStop
Server Toolkit.
Specific Enhancements
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WebLogic Server clusters use UDP multicast-based communications for cluster
heartbeat monitoring and propagation of the Java Naming and Directory Interface
(JNDI) tree to the members of a cluster.
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The WebLogic Server transaction manager coordinates global transactions with
branches contracted to TMF through the Java XA resource object. As the
WebLogic Server usually accesses only TMF protected resources on the NonStop
server, the WebLogic Server transaction manager’s logging and recovery activities
must be efficient. To this end, the TMF product has been enhanced to support one-
phase commit optimization for imported branches.
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SQL/MX SPR 2.0 is HP’s next generation relational database management system
designed for business-critical applications. SQL/MX software brings traditional
NonStop fundamentals—high availability, scalability, reliability, and parallel
processing—to a distributed database.
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The WebLogic Server 8.1 Service Pack 3 is available for the NonStop server. This
version of the WebLogic Server depends on Java 2 Standard Edition Version
1.4.2_04. The NonStop Server for Java 4 has been updated to conform to this.
Refer to Java documentation for more information.
Note. Applications using WebLogic Server must use SQL/MX to access NonStop SQL tables.
Access to these tables is not supported for programs using HP NonStop SQL/MP (SQL/MP).
For information about the differences between SQL/MX and SQL/MP, see SQL/MX
Comparison Guide for SQL/MP Users.