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EJB --> Monitoring --> Entity EJBs

Tasks     Related Topics

Overview

The runtime information collected for an entity EJB is substantial and can be very useful for tuning and debugging the EJB. This console screen displays a variety of statistics about the state and performance of entity EJBs. The statistics are discussed in the following sections:

• Pooled Beans Current Count
• Beans in Use Current Count
• Access Total Count
• Miss Total Count
• Cache Access Count
• Cache Hit Count
• Cache Miss Count

Pooled Beans Current Count

Displays the current number of available bean instances in the free pool. This information is useful for tracking demand for your EJB. For example, this can be important when investigating an abnormal pool miss ratio.

Beans in Use Current Count

Displays the number of bean instances currently in use from the free pool. This information is useful for tracking demand for your EJB. For example, this can be important when investigating an abnormal pool miss ratio.

Access Total Count

Displays the total number of times an attempt was made to get an instance from the free pool. This information is useful for giving context to the other free pool counts.

Miss Total Count

Displays the total number of times a failed attempt was made to get an instance from the free pool. An Attempt to get a bean from the pool will fail if there are no available instances in the pool. This information is useful for calculating the pool miss ratio.

Cache Access Count

Displays 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

Displays 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.

Cache Miss Count

Displays the total number of times an attempt to access a bean from the cache failed. This information is useful for determining the effectiveness of the EJB cache.

Tasks

Monitoring Entity EJBs

Related Topics

EJB Runtime Monitoring