Sun Java System Application Server Platform Edition 8.1 2005Q2 Update 2 Developer's Guide

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## Configuring Sessions

This section covers the following topics:

- Sessions, Cookies, and URL Rewriting

- Coordinating Session Access

### Sessions, Cookies, and URL Rewriting

To configure whether and how sessions use cookies and URL rewriting, edit the `session-properties` and `cookie-properties` elements in the `sun-web.xml` file for an individual web application. See session-properties and cookie-properties for more about the properties you can configure.

For information about configuring default session properties for the entire web container, see the Sun Java System Application Server Platform Edition 8.1 2005Q2 Update 2 Administration Guide.

### Coordinating Session Access

Make sure that multiple threads don’t simultaneously modify the same session object in conflicting ways.

This is especially likely to occur in web applications that use HTML frames where multiple servlets are executing simultaneously on behalf of the same client. A good solution is to ensure that one of the servlets modifies the session and the others have read-only access.

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