WebLogic Server Performance and Tuning

Top Tuning Recommendations for WebLogic Server

Understand Your Performance Objectives

Tune the Operating System

UNIX Tuning Parameters

Solaris TCP Tuning Parameters

HP-UX Tuning Parameters

AIX Tuning Parameters

Linux Tuning Parameters

Windows Tuning Parameters

Optimize Your Database

General Suggestions

Database-Specific Tuning

Oracle

Microsoft SQL Server

Sybase

Identify the Best JVM Settings

Sun JDK

JRockit JDK

Tune WebLogic Server Performance Parameters

Monitor Disk and CPU Utilization

Monitor Data Transfers Across the Network

Check For Frequent Standard I/O or Logging

Locate Bottlenecks in Your Applications

Tune Your Application

EJBs

JSPs and Servlets

JMS

JDBC

Tuning Hardware, Operating System, and Network Performance

Hardware Tuning

Supported Platforms

Operating System Tuning

Solaris Tuning Parameters

Setting TCP Parameters With the ndd Command

Setting Parameters In the /etc/system File

CE Gigabit Network Card Settings

Linux Tuning Parameters

HP-UX Tuning Parameters

Other Operating System Tuning Information

Network Performance

Determining Network Bandwidth

LAN Infrastructure

Tuning Java Virtual Machines (JVMs)

JVM Tuning Considerations

Which JVM for Your System?

Changing To a Different JVM

JVM Heap Size and Garbage Collection

Choosing a Garbage Collection Scheme

Using Verbose Garbage Collection to Determine Heap Size

Specifying Heap Size Values

Using WebLogic Startup Scripts to Set Heap Size

Java Heap Size Options

Automatically Logging Low Memory Conditions

Manually Requesting Garbage Collection

Setting Java HotSpot VM Options

Standard HotSpot VM Options for Windows, Solaris, and Linux

Non-Standard HotSpot VM Options for Windows, Solaris, and Linux

Tuning WebLogic Server

Setting Java Parameters for Starting WebLogic Server

Setting Performance-Related Configuration Parameters

Development vs. Production Mode Default Tuning Values

Using WebLogic Server "Native IO" Performance Packs

Which Platforms Have Performance Packs?

Enabling Performance Packs

Tuning the Default Execute Queue Threads

Should You Modify the Default Thread Count?

Scenarios for Modifying the Default Thread Count

Modifying the Default Thread Count

Assigning Applications to Execute Queues

Allocating Execute Threads to Act as Socket Readers

Setting the Number of Socket Reader Threads For a Server Instance

Setting the Number of Socket Reader Threads on Client Machines

Tuning Execute Queues for Overflow Conditions

Tuning the Execute Thread Detection Behavior

Tuning Connection Backlog Buffering

How JDBC Connection Pools Enhance Performance

Tuning JDBC Connection Pool Initial Capacity

Tuning JDBC Connection Pool Maximum Capacity

Caching Prepared and Callable Statements

Setting Your Java Compiler

Changing Compilers in the Administration Console

Setting Your Compiler in weblogic.xml

Compiling EJB Container Classes

Compiling on UNIX

Using WebLogic Server Clusters to Improve Performance

Scalability and High Availability

How to Ensure Scalability for WebLogic Clusters

Database Bottlenecks

Session Replication

Invalidation of Entity EJBs

Invalidation of HTTP sessions

JNDI Binding, Unbinding and Rebinding

Performance Considerations When Running Multiple Server Instances on Multi-CPU Machines

Monitoring a WebLogic Server Domain

Tuning WebLogic Server EJBs

Setting Performance-Related weblogic-ejb-jar.xml Parameters

Setting EJB Pool Size for Session and Message-Driven Beans

Using a Free Pool to Improve Stateless Session Bean Performance

Allocating Pool Size for Entity Beans

Tuning Pool Size for Stateless Sessions Beans at Startup

Setting Caching Size for Stateful Session and Entity Beans

Activation and Passivation of Stateful Session EJBs

Deferring Database Locking

Setting Transaction Isolation Level

Setting Performance-Related weblogic-cmp-jar.xml Parameters

Tuning In Response to Monitoring Statistics

Cache Miss Ratio

Lock Waiter Ratio

Lock Timeout Ratio

Pool Miss Ratio

Destroyed Bean Ratio

Pool Timeout Ratio

Transaction Rollback Ratio

Transaction Timeout Ratio

Other Performance Improvement Strategies

Application-Level Caching

Batch Operations

Distributing Transactions Across EJBs in a WebLogic Server Cluster

Indexing with a Version Column

Tuning WebLogic Server Applications

Using Performance Analysis Tools

Using the JProbe Profiler

Using the Optimizeit Profiler

JDBC Application Tuning

JMS Application Tuning

EJB Application Tuning

Web Services Tuning

Managing Sessions

Managing Session Persistence

Minimizing Sessions

Using Execute Queues to Control Thread Usage

Creating Execute Queues

Assigning Servlets and JSPs to Execute Queues

Assigning EJBs and RMI Objects to Execute Queues