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Oracle9
i
Application Server Performance Guide
Release 2 (9.0.2)
Part Number A95102-02
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Preface
Intended Audience
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Organization
Related Documentation
Conventions
1 Performance Overview
Introduction to Oracle9
i
AS Performance
Performance Terms
What Is Performance Tuning?
Response Time
System Throughput
Wait Time
Critical Resources
Effects of Excessive Demand
Adjustments to Relieve Problems
Performance Targets
User Expectations
Performance Evaluation
Performance Methodology
Factors in Improving Performance
2 Monitoring Oracle9
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AS
Overview of Monitoring Oracle9
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AS
Oracle Enterprise Manager
Oracle9
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AS Built-in Performance Metrics
Native Operating System Performance Commands
Network Performance Monitoring Tools
Using Oracle9
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AS Built-in Performance Metrics
Viewing Performance Metrics Using AggreSpy
AggreSpy URL and Access Control
Viewing Performance Metrics Using dmstool
Access Control for dmstool
Using dmstool to List the Names of All Metrics
Using dmstool to Report Specific Performance Metrics
Using dmstool With the Interval and Count Options
Using dmstool to Report All Metrics with Metric Values
Using dmstool to View Metrics on a Remote Oracle9
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AS System
3 Monitoring Oracle HTTP Server
Monitoring Oracle HTTP Server with Oracle Enterprise Manager
Assessing the Oracle HTTP Server Load with Oracle Enterprise Manager
Status Metrics
Response and Load Metrics
Module Metrics
Investigating Oracle HTTP Server Errors with Oracle Enterprise Manager
Categorizing Oracle HTTP Server Problems with Oracle Enterprise Manager
Categorizing Oracle HTTP Server Problems by Module
Categorizing Oracle HTTP Server Problems by Virtual Host
Categorizing Oracle HTTP Server Problems by Child Server
Monitoring Oracle HTTP Server with Built-in Performance Metrics
Assessing the Oracle HTTP Server Load with Built-in Metrics
Investigating Oracle HTTP Server Errors with Built-in Metrics
Categorizing Oracle HTTP Server Performance Problems with Built-in Metrics
Categorizing Oracle HTTP Server Performance Problems by Module
Categorizing Oracle HTTP Server Performance Problems by Virtual Host
Categorizing Oracle HTTP Server Performance Problems by Child Server
4 Monitoring OC4J
Monitoring OC4J With Oracle Enterprise Manager
Monitoring OC4J Instances With Oracle Enterprise Manager
General
Status
Response for Servlets and JSPs
Response for EJBs
JDBC Usage
Monitoring J2EE Applications with Oracle Enterprise Manager
General
Response for Servlets and JSPs
Response for EJBs
Web Module Table
EJB Modules Table
Monitoring OC4J With Built-in Performance Metrics
5 Optimizing Oracle HTTP Server
TCP Tuning Parameters (for UNIX)
Tuning Linux
Raising Network Limits on Linux Systems for 2.1.100 or greater
Tuning a Running System
Tuning the Default and Maximum Size
Tuning at Compile Time
Setting TCP Parameters
Increasing TCP Connection Table Access Speed
Specifying Retention Time for Connection Table Entries
Increasing the Handshake Queue Length
Changing the Data Transmission Rate
Changing the Data Transfer Window Size
Network Tuning (for Windows)
Configuring Oracle HTTP Server Directives
Configuring the MaxClients Directive
How Persistent Connections Can Reduce httpd Process Availability
Configuring the ThreadsPerChild Parameter (for Windows)
Configuring ThreadsPerChild for Static Page Requests
Logging
Access Logging
Configuring the HostNameLookups Directive
Error logging
Secure Sockets Layer
Oracle HTTP Server Performance Tips
Analyze Static Versus Dynamic Requests
Analyze Time Differences Between Oracle HTTP Server and OC4J Servers
Beware of a Single Data Point Yielding Misleading Results
6 Optimizing J2EE Applications In OC4J
OC4J J2EE Application Performance Quickstart
Improving J2EE Application Performance by Configuring OC4J Instance
Setting Java Options for OC4J Processes
Setting the JVM Heap Size for OC4J Processes
Setting the Server Option for OC4J Processes (for UNIX)
Setting the Stack Size Option for OC4J Processes
Setting the Concurrentio Option for OC4J Processes
Using Oracle Enterprise Manager to Change OC4J JVM Command Line Options
Setting Up Data Sources - Performance Issues
Emulated and Non-Emulated Data Sources
Using the EJB Aware Location Specified in Emulated Data Sources
Setting the Maximum Open Connections in Data Sources
Setting the Minimum Open Connections in Data Sources
Setting the Cached Connection Inactivity Timeout in Data Sources
Setting the Wait for Free Connection Timeout in Data Sources
Setting the Connection Retry Interval in Data Sources
Setting the Maximum Number of Connection Attempts in Data Sources
Using Oracle Enterprise Manager to Change Data Source Configuration Options
Improving Servlet Performance in Oracle9
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AS
Improving Performance by Altering Servlet Configuration Parameters
Loading Servlet Classes at Startup
Servlet Performance Tips
Analyze Servlet Duration
Understand Server Request Load
Find Large Servlets That Require a Long Load Time
Watch for Unused Sessions
Watch for Abnormal Session Usage
Load Servlet Session Security Routines at Startup
Improving JSP Performance in Oracle9
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AS
Improving Performance by Altering JSP Configuration Parameters
Using the main_mode Parameter
Improving Performance by Tuning JSP Code
Impact of Session Management on Performance
Using Static Template Text Instead of out.print for Outputting Text
Performance Issues for Buffering JSPs
Using Static Versus Dynamic Includes
Performance Issues for Including Static Content
Improving EJB Performance in Oracle9
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AS
Setting server.xml Configuration Parameters for EJBs
Setting the Transaction Configuration Timeout
Setting OC4J Specific Configuration Parameters for EJBs
Configuring Parameters that Apply for All EJBs
Configuring Parameters for CMP Entity Beans
Configuring Parameters for BMP Entity Beans
Configuring Parameters for Session Beans
Using Multiple OC4Js and Limiting Connections
Limiting HTTP Connections
Limiting HTTP Connections with Standalone OC4J
Configuring Multiple OC4J Processes
Configuring Multiple OC4J Processes Using Oracle Enterprise Manager
Balancing Applications Across OC4J Instances
Database Monitoring and Tuning
Improving BC4J Performance in Oracle9
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AS
Choose the Right Deployment Configuration
Use Application Module Pooling for Scalability
Perform Global Framework Component Customization Using Custom Subclasses
Use SQL-Only and Forward-Only View Objects when Possible
Do Not Let Your Application Modules Get Too Large
Use the Right Failover Mode
Use View Row Spillover to Lower the Memory to Cache a Large Number of Rows
Choose the Right Style of Bind Parameters
Implement Query Conditions at Design Time if Possible
Use the Right JDBC Fetch Size
Turn off Event Listening in View Objects used in Batch Processes
7 Optimizing Web Cache
Use Two CPUs for Oracle9
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AS Web Cache
Configure Enough Memory for Oracle9
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AS Web Cache
Make Sure You Have Sufficient Network Bandwidth
Set a Reasonable Number of Network Connections
Connections on UNIX Platforms
Connections on Windows NT and Windows 2000
8 Optimizing PL/SQL Performance
PL/SQL Performance in Oracle9
i
AS - Overview
Performance Tuning Issues for mod_plsql
Connection Pooling with mod_plsql
Closing Pooled Database Sessions
What Happens to the mod_plsql Connection Pool when the Database Restarts?
Performance Tuning Areas in mod_plsql
PL/SQL Application
Connection Pooling and Oracle HTTP Server Configuration
Tuning the Number of Database Sessions
Two-Listener Strategy
Overhead Problems
The Describe Overhead
Avoiding the Describe Overhead
The Flexible Parameter Passing (four-parameter) Overhead
Using Caching with PL/SQL Web Applications
Using the Validation Technique
Last-Modified
Entity Tag Method
Using the Validation Technique for mod_plsql
Second Request Using the Validation Technique
Using the Expires Technique
Second Request Using the Expires Technique
System- and User-level Caching with PL/SQL Web Applications
PL/SQL Web Toolkit functions (owa_cache package)
Other Oracle HTTP Server Directives
A Oracle9
i
AS Performance Metrics
Oracle HTTP Server Metrics
Aggregate Module Metrics
HTTP Server Module Metrics
JVM Metrics
JDBC Metrics
JDBC Driver Metrics
JDBC Data Source Metrics
JDBC Driver Specific Connection Metrics
JDBC Data Source Specific Connection Metrics
JDBC Driver Statement Metrics
JDBC Data Source Statement Metrics
J2EE Application Metrics - OC4J Metrics
Web Module Metrics
Web Context Metrics
Servlet Metrics
JSP Metrics
JSP Runtime Metrics
JSP Metrics
EJB Metrics
EJB Bean Metrics
EJB Method Metrics
Portal Metrics
Parallel Page Engine Metrics
JServ Metrics
Overall JServ Metrics
JServ Zone Metrics
JServ Servlet Metrics
JServ JSP Metrics
Index
Copyright © 2002 Oracle Corporation.
All Rights Reserved.
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