What version of Enterprise Server are you using? What operating system and version? What JDK version?
What resources does your system have, such as memory, disk, and swap space? If system memory is an issue, look for ways to optimize your configuration and consider taking other actions such as adding memory or decreasing system load.
Have any patches been applied? If so, what are the product and operating system patch numbers?
What other products and technologies are installed and being used in the installation?
How many application servers, web servers, and directory servers are installed? What are the products and versions?
How is the web server connected to Enterprise Server? On the same system?
How is Enterprise Server connected to the directory server?
What JDBC driver is being used to access the database?