PMI for external monitoring
If you decide to use third-party tools to monitor WAS, then the following list will serve as a quick guide to the PMI you should be monitoring to ensure the health of your system:
Average response time: Response time statistics indicate how much time is spent in various sections of WebSphere Application Server and might quickly indicate where the problem is.
Number of requests (transactions): Enables you to look at how much traffic is processed by the WebSphere Application Server, helping you to determine the capacity that you have to manage.
Number of HTTP sessions: The number of live HTTP sessions reflects the concurrent usage of your site.
Web server and EJB thread pools: Thread pools might constrain performance due to their size.
Database and connection pool size: The thread pools setting can be too small or too large, therefore, causing performance problems.
Java Virtual Memory (JVM): Use the JVM metric to understand the JVM heap dynamics, including the frequency...
