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# EJB: Monitoring: Message Driven EJBs

Column Display Related Tasks Related Topics

This page displays a variety of statistics about the performance of the message-driven EJB. Use the runtime information for tuning and debugging the EJB.

#### 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
--- | ---
Machine | The WebLogic Server host computer (machine) on which this server is meant to run. If you want to use a Node Manager to start this server, you must assign the server to a machine and you must configure the machine for the Node Manager. You cannot change this value if a server instance is already running. MBean Attribute: `ServerMBean.Machine` Changes take effect after you redeploy the module or restart the server.
Server | An alphanumeric name for this server instance. (Spaces are not valid.) The name must be unique for all configuration objects in the domain. Within a domain, each server, machine, cluster, JDBC connection pool, virtual host, and any other resource type must be named uniquely and must not use the same name as the domain. The server name is not used as part of the URL for applications that are deployed on the server. It is for your identification purposes only. The server name displays in the Administration Console, and if you use WebLogic Server command-line utilities or APIs, you use this name to identify the server. After you have created a server, you cannot change its name. Instead, clone the server and provide a new name for the clone. MBean Attribute: `ServerMBean.Name` Changes take effect after you redeploy the module or restart the server.
Name | The name of this configuration. WebLogic Server uses an MBean to implement and persist the configuration. MBean Attribute: `MessageDrivenEJBRuntimeMBean.Name`
EJB Name | Provides the ejb-name for this EJB as defined in the ejb-jar.xml deployment descriptor. MBean Attribute: `MessageDrivenEJBRuntimeMBean.EJBName`
Application Name | The name of the Enterprise application. MBean Attribute: `ApplicationRuntimeMBean.ApplicationName`
Pooled Beans Current Count | Provides a count of the current number of available bean instances in the free pool. MBean Attribute: `EjbPoolRuntimeMBean.PooledBeansCurrentCount`
Beans In Use Count | Provides a count of the number of bean instances currently being used from the free pool. MBean Attribute: `EjbPoolRuntimeMBean.BeansInUseCurrentCount`
Waiter Current Count | Provides a count of the number of Threads currently waiting for an available bean instance from the free pool. MBean Attribute: `EjbPoolRuntimeMBean.WaiterCurrentCount`
Timeout Total Count | Provides a count of the total number of Threads that have timed out waiting for an available bean instance from the free pool. MBean Attribute: `EjbPoolRuntimeMBean.TimeoutTotalCount`
Access Total Count | Provides a count of the total number of times an attempt was made to get an instance from the free pool. MBean Attribute: `EjbPoolRuntimeMBean.AccessTotalCount`
Miss Total Count | Provides a count of 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. MBean Attribute: `EjbPoolRuntimeMBean.MissTotalCount`
Destroyed Total Count | Provides a count of the total number of times a bean instance from this pool was destroyed due to a non-application Exception being thrown from it. MBean Attribute: `EjbPoolRuntimeMBean.DestroyedTotalCount`
Connection Status | Provides the connection status for the Message Driven Bean. ConnectionStatus can be Connected or Reconnecting. MBean Attribute: `MessageDrivenEJBRuntimeMBean.ConnectionStatus`
Processed Message Count | Provides a count of the total number of messages processed by this Message Driven Bean. MBean Attribute: `MessageDrivenEJBRuntimeMBean.ProcessedMessageCount`
Suspend Count | Provides a count of the total number of times this MDB is suspended by the user or the EJB container. MBean Attribute: `MessageDrivenEJBRuntimeMBean.SuspendCount`
Transactions Committed Total Count | Provides a count of the total number of transactions that have been committed for this EJB. MBean Attribute: `EjbTransactionRuntimeMBean.TransactionsCommittedTotalCount`
Transactions Rolled Back Total Count | Provides a count of the total number of transactions that have been rolled back for this EJB. MBean Attribute: `EjbTransactionRuntimeMBean.TransactionsRolledBackTotalCount`
Transactions Timed Out Total Count | Provides a count of the total number of transactions that have timed out for this EJB. MBean Attribute: `EjbTransactionRuntimeMBean.TransactionsTimedOutTotalCount`
Destination | Provides a count of the Message Driven Bean destination MBean Attribute: `MessageDrivenEJBRuntimeMBean.Destination`
JMS Client ID | Provides a count of the Message Driven Bean jmsClientID MBean Attribute: `MessageDrivenEJBRuntimeMBean.JmsClientID`
Connection Alive | Provides information about whether the Message Driven Bean is currently connected to the JMS destination it is mapped to. Returns whether the Message Driven Bean is currently connected to the JMS destination it is mapped to. MBean Attribute: `MessageDrivenEJBRuntimeMBean.JMSConnectionAlive`
Status | Provides the Message Driven Bean status. MDBStatus is used after the MDB is connected to the destination. MDBStatus can be Running or Suspended. MBean Attribute: `MessageDrivenEJBRuntimeMBean.MDBStatus`
Last Exception | Provides the last exception as String this MDB encountered MBean Attribute: `MessageDrivenEJBRuntimeMBean.LastExceptionAsString`
Timeout Count | Provides the total number of successful timeout notifications that have been made for this EJB. MBean Attribute: `EjbTimerRuntimeMBean.TimeoutCount`
Cancelled Timer Count | Provides the total number of timers that have been explicitly cancelled for this EJB. MBean Attribute: `EjbTimerRuntimeMBean.CancelledTimerCount`
Active Timer Count | Provides the current number of active timers for this EJB MBean Attribute: `EjbTimerRuntimeMBean.ActiveTimerCount`
Disabled Timer Count | Provides the current number of timers temporarily disabled for this EJB MBean Attribute: `EjbTimerRuntimeMBean.DisabledTimerCount`

Related Tasks

- Configure EJBs
- View deployment status of EJBs
- Set EJB target servers and clusters
- Stop EJBs

Related Topics

- Programming WebLogic Enterprise JavaBeans
- Deploying Applications to WebLogic Server
- Developing Applications for WebLogic Server