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Scaling, Distributing, and Tuning Applications
This document explains how to scale, distribute, and tune CORBA, EJB, and RMI applications that run in the WebLogic EnterpriseTM environment. It describes how to build and deploy highly scalable applications using WebLogic Enterprise scalability features, such as handling object state management, load balancing, replicating server processes and server groups, using multithreaded Java servers (Java applications only), using factory-based routing (CORBA applications only), and multiplexing incoming client connections. It also describes how to tune application performance using WebLogic Enterprise and BEA Tuxedo® configuration features.
1. Scaling WebLogic Enterprise Applications
About Scaling WebLogic Enterprise Applications
Application Scalability Requirements
WebLogic Enterprise Scalability Features
Scalability Support for WebLogic Enterprise Applications
Implementing Stateless and Stateful Objects
Replicating Server Processes and Server Groups
About Replicating Server Processes and Server Groups
Using Multithreaded Java Servers (Java only)
About Multithreaded Java Servers
When to Use Multithreaded Java Servers
Configuring a Multithreaded Java Server
Using Factory-based Routing (CORBA only)
Characteristics of Factory-based Routing
How Factory-based Routing Works
Configuring Factory-based Routing in the UBBCONFIG File
Multiplexing Incoming Client Connections
Increasing the Number of ISH Processes
2. Scaling CORBA C++ Server Applications
About Scaling the Production Sample Application
How the Application Has Been Scaled
Using a Stateless Object Model
Scaling by Replicating Server Processes and Server Groups
Replicating Server Processes in the Production Application
Replicating Server Groups in the Production Application
Configuring Replicated Server Processes and Groups in the Production Application
Scaling with Factory-based Routing
About Factory-based Routing in the Production Application
Configuring Factory-based Routing in the UBBCONFIG File
Implementing Factory-based Routing in a Factory
Additional Design Considerations
About the Additional Design Considerations
Instantiating the Registrar and Teller Objects
Ensuring That Student Registration Occurs in the Correct Server Group
Ensuring That the Teller Object Is Instantiated in the Correct Server Group
Scaling the Application Further
3. Scaling CORBA Java Server Applications
About Scaling the JDBC Bankapp Sample Application
How the Application Has Been Scaled
Scaling with Object State Management
Scaling by Replicating Server Processes and Server Groups
Replicating Server Processes in the Bankapp Application
Replicating Server Groups in the Bankapp Application
Configuring Replicated Server Processes and Groups in the Bankapp Application
Scaling with Factory-based Routing
About Factory-based Routing in the Bankapp Application
Configuring Factory-based Routing in the UBBCONFIG File
Implementing Factory-based Routing in a Factory
Additional Design Considerations
About the Additional Design Considerations
Instantiating the Teller Object
Ensuring That Account Updates Occur in the Correct Server Group
Scaling the Application Further
Scaling Tasks for EJB Providers
Minimizing State Information in Stateful Session Beans
Implementing Methods for Bean Persistence
Completing Transactions Efficiently
Implementing the Process-entity Design Pattern
Scaling Tasks for Application Assemblers and Deployers
Configuring the Persistent Storage Location
Specifying the Method to Invoke Before Passivation
Deploying Stateful Session Beans on the IIOP Listener Node
Scaling Tasks for System Administrators
Removing Orphan Files for File-based Persistence
Scaling and Tuning the EJB Cache
Why Distribute an Application?
About Distributing an Application
Benefits of a Distributed Application
Characteristics of Distributing an Application
Using Data-dependent Routing (BEA Tuxedo Servers Only)
Characteristics of Data-dependent Routing
Sample Distributed Application
Configuring the UBBCONFIG File
About the UBBCONFIG File in Distributed Applications
Modifying the SERVICES Section
Example of UBBCONFIG Sections in a Distributed Application
Configuring the factory_finder.ini (CORBA Applications Only)
Modifying the Domain Gateway Configuration File to Support Routing
About the Domain Gateway Configuration File
Parameters in the DM_ROUTING Section of the DMCONFIG File (BEA Tuxedo Only)
Maximizing Application Resources
When to Use MSSQ Sets (BEA Tuxedo Servers Only)
Two Ways to Measure Service Performance Time (BEA Tuxedo Servers Only)
Configuring Replicated Server Processes and Groups
Configuring Multithreaded Java Servers
Setting the OPENINFO Parameter
Configuring the Number of Threads
Configuring the Number of Concurrent Accessors
Assigning Priorities to Interfaces or Services
About Priorities to Interfaces or Services
Characteristics of the PRIO Parameter
Bundling Services into Servers (BEA Tuxedo Servers Only)
Enhancing Efficiency with Application Parameters
Setting the MAXACCESSERS, MAXSERVERS, MAXINTERFACES, and MAXSERVICES Parameters
Setting the MAXGTT, MAXBUFTYPE, and MAXBUFSTYPE Parameters
Setting the SANITYSCAN, BLOCKTIME, BBLQUERY, and DBBLWAIT Parameters
Setting Application Parameters
About System Traffic and Bottlenecks
Example of Detecting a System Bottleneck
Detecting Bottlenecks on Windows NT
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Copyright © 2000 BEA Systems, Inc. All rights reserved.
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