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JMS Server: Monitoring: Active Pooled Connections

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A pooled JMS connection is a session pool used by EJBs and servlets that use a resource-ref element in their EJB or servlet deployment descriptor to define their JMS connection factories (also known as a wrapped connection factory). This tab enables you to monitor JMS connection and session objects, as well some message producer objects that are automatically created when declaring a wrapped JMS connection factory in your EJB or servlet.

Column Display

You can show fewer or additional data points on this page by expanding Customize this table and modifying the Column Display list. Each data point displays in its own table column.

The following table lists all of the data points that you can display in columns on this page.

Name Description
Num Leaked

The number of JMS sessions that were removed from the session pool, but were not returned.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.NumLeaked

Num Failures To Refresh

The number of failed attempts to create a JMS session in the session pool.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.NumFailuresToRefresh

Creation Delay Time

The average amount of time that it takes to create each JMS session in the session pool.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.CreationDelayTime

Num Waiters

The number of threads waiting to retrieve a JMS session from the session pool.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.NumWaiters

Highest Num Waiters

The highest number of threads waiting to retrieve a JMS session in this instance of the session pool since it was instantiated.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.HighestNumWaiters

Highest Wait Seconds

The highest number of seconds that an application waited to retrieve a JMS session in this instance of the session pool since it was instantiated.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.HighestWaitSeconds

Num Reserved

The number of JMS sessions that are currently in use.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.NumReserved

Highest Num Reserved

The highest number of concurrent JMS sessions reserved for this instance of the session pool since it was instantiated.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.HighestNumReserved

Num Available

The number of available JMS sessions in the session pool that are not currently in use.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.NumAvailable

Highest Num Available

The highest number of available JMS sessions in this instance of the session pool since it was instantiated.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.HighestNumAvailable

Num Unavailable

The number of JMS sessions in the session pool that are not currently usable for some reason.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.NumUnavailable

Highest Num Unavailable

The highest number of unusable JMS sessions in this instance of the session pool since it was instantiated.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.HighestNumUnavailable

Total Num Allocated

The total number of JMS sessions allocated by this session pool in this instance of the session pool since it was instantiated.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.TotalNumAllocated

Total Num Destroyed

The total number of JMS sessions that were created and then destroyed in this instance of the session pool since it was instantiated.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.TotalNumDestroyed

Max Capacity

The maximum number of JMS sessions that can be allocated using the session pool.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.MaxCapacity

Curr Capacity

The current capacity of the session pool, which is always less than or equal to the maximum capacity of JMS sessions.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.CurrCapacity

Average Reserved

The average number of JMS sessions that have been in use in this instance of the session pool since it was instantiated. This generally happens when an EJB or servlet is deployed that requires the session pool.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.AverageReserved

Num Connection Objects

The number of JMS connections that back this session pool. This value may be greater than one if different sessions were created using different combinations of a username and password to contact the JMS server.

MBean Attribute:
JMSPooledConnectionRuntimeMBean.NumConnectionObjects

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