Oracle Waveset 8.1.1 System Administrator's Guide

Before You Begin Tuning

Review all of the information in this section before you start tuning Waveset.

Important Notes

Note –

The tuning methods described in this chapter are only provided as guidelines. You might have to modify some of these tunings for your deployment. In addition, Be sure to validate tunings before applying changes in a production environment.

Before you can tune Waveset, you must:

Be familiar with tuning application servers
Be familiar with Java 5.0 (required for Oracle Waveset 8.1.1)
Understand performance limitations within your deployment environment
Be able to identify areas needing performance improvements
Understand the checklists provided in this chapter

Related Documentation and Web Sites

In addition to the information provided in this chapter, consult the documents and web sites listed in this section for information related to tuning Waveset.

Recommended Reading

See the following documents for information related to performance tuning.

Table 4–1 Related Documentation


Document Title	Description
Java Tuning White Paper	Contains information, techniques, and pointers related to Java performance tuning.
Oracle MetaLink: Note:114671.1: Gathering Statistics for the Cost Based Optimizer	Explains how to use system statistics and Oracle’s Cost-Based Optimizer (CBO). Note: This document is available to Oracle Metalink subscribers. Registration is required.
Solaris Dynamic Tracing Guide	Explains how to use DTrace to observe, debug, and tune your system's behavior.
Sun Java System Application Server Performance Tuning Guide	Describes how to obtain optimal performance from your Sun Java System Application Server. Download the necessary version of this book from the Oracle documentation web site.
Tuning Garbage Collection with the 5.0 Java Virtual Machine	Describes how to tune your garbage collection application by using JVM.
Turbo-charging Java HotSpot Virtual Machine, v1.4.x to Improve the Performance and Scalability of Application Servers	Explains how to download and use the `PrintGCStats` script and how to collect statistics to derive optimal JVM tunings.
Using JConsole to Monitor Applications	Describes how to use JConsole to monitor applications that run on the Java platform.

Useful Web Sites

The following table describes some web sites that you might find useful when trying to tune Waveset performance.

Table 4–2 Useful Web Sites


Web Site URL	Description
`http://sunsolve.sun.com`	Oracle web site containing diagnostic tools, forums, features and articles, security information, and patch contents. Note: The information on this site is divided into three areas: Internal. Available only to Oracle employees Contract. Available only to customers with contract access Public. Available to everyone
`http://forums.sun.com`	Oracle Developer Network (SDN) web site where you can browse forums and post questions.
`http://jrat.sourceforge.net/`	JRat web site that describes how to use the Java Runtime Analysis Toolkit, an open source performance profiler for the Java platform.
`https://metalink.oracle.com/`	Oracle’s internal forum site that contains information about tuning Oracle databases. Note: You must be an Oracle Metalink subscriber to access the information provided on this site.
`http://performance.netbeans.org/howto/jvmswitches/index.html`	NetBeans web site containing information about tuning JVM switches for performance.
`https://sharespace.sun.com/gm/folder-1.11.60181?`	Waveset link on Oracle’s Share Space. Note: This space is only available to Oracle employees and Oracle partners. In addition, these individuals must have a Share Space ID to access the information on this site.
`https://sharespace.sun.com/gm/document-1.26.2296`	Waveset FAQ on Oracle’s Share Space. Note: This space is only available to Oracle employees and Oracle partners. In addition, these individuals must have a Share Space ID to access the information in this FAQ.
`http://www.slamd.com/`	SLAMD Distributed Load Generation Engine web site.
`http://hub.opensolaris.org/bin/view/Community+Group+dtrace/WebHome`	OpenSolaris Community: DTrace web page.
`http://www.solarisinternals.com/` `http://docs.sun.com/app/docs/prod/solaris.10`	Web sites containing information related to tuning the Solaris OS.

Tuning Roadmap

How well your Waveset solution performs can depend on the following deployment-specific settings:

Resource configuration
How many resources are connecting
What type of resources are connecting
How attributes are mapped on the resources
Exact resource version
Network topology
Number (and distribution) of domain controllers
Number of installed Waveset Gateways
Number of concurrent settings
Number of concurrent processes (running workflows)
Number of concurrent users
Number of concurrent Waveset administrators
Total number of users under management

When you are trying to debug performance problems, start by analyzing and describing the problem. Ask yourself the following questions:

Where do you see the performance issue? In reconciliation, workflows, custom workflows, GUI page loading, provisioning, Access Review?
Are you CPU bound, memory bound, resource bound, or network bound?
Have you examined your configuration (hardware, network, parameters, and so forth) for problems?
Have you recently changed anything in your deployment environment?
Have you tried profiling troublesome resources natively to see if the problem is on the resource side and not with Waveset?
What size are the views?
Are you provisioning to several resources?
Are resources on slow networks connecting to Waveset?
Are you running additional applications on the server with Waveset?
Do your organizations have a Rule-Driven Members rule?
Have you run a series of thread dumps to see if there is a consistent pattern?

Note –
Looking at just a single thread dump can be misleading.
Have you recently turned on tracing?
Have you checked your JVM garbage collection?
Have you added organizations that are adding load to memory management?