High Available Architectures and Capacity Planning with WebSphere Remote Server V6

Chapter 9. Tuning the existing environment for better performance 307

In the Administrative console, select Security → Global Security. The Enabled

and Enforce Java 2 Security check boxes control global security settings. By

default, security is not enabled.

Fine-tuning the security cache timeout for the environment

If WebSphere Application Server security is enabled, the security cache timeout

influences performance. The timeout parameter specifies how often you should

refresh the security-related caches.

Security information pertaining to beans, permissions, and credentials is cached.

When the cache timeout expires, all cached information become invalid.

Subsequent requests for the information result in a database lookup. Sometimes,

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