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Stateful EJB Runtime

You can monitor stateful session EJBs using the following statistics:

Statistic | Description
--- | ---
Cached Beans Current Count | Reports the total number of beans from this EJB Home currently in the EJB cache. Use this information to calculate the current percentage of the configured cache capacity being used.
Cache Access Count | Reports the total number of attempts to access a bean from the cache. This information is useful for giving context to other counts such as cache hits.
Cache Hit Count | Reports the total number of times an attempt to access a bean from the cache succeeded. This information is useful for determining the effectiveness of the EJB cache.
Activation Count | Reports the total number of beans from this EJB Home that have been activated.
Passivation Count | Reports the total number of beans from this EJB Home that have been passivated.
Lock Entries Current Count | Reports the current number of lock entries in the lock manager. This information may be helpful in detecting stale lock entries.
Lock Manager Access Count | Reports the total number of attempts to obtain a lock on a bean. This includes attempts to obtain a lock on a bean that is already locked on behalf of the client. This information is useful for giving context to the waiter and timeout total counts.
Waiter Total Count | Reports the number of times a thread requested and had to wait for a bean from the free pool.
Timeout Total Count | Reports the total number of transactions that have timed out. Every EJB request uses valuable server resources such as threads and bean instances. A timed out transaction means that server resources were tied up in vain, suggesting a problem with the application.

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