# JMSDistributedQueueMBean

Overview | Related MBeans | Attributes | Operations

## Overview

This class represents a JMS distributed queue, which is comprised of multiple physical JMS queues as members of a single distributed set of queues that can be served by multiple WebLogic Server instances within a cluster.

Deprecated. 9.0.0.0 Replaced by DistributedQueueBean

Since | 7.0.0.0
Security roles | The following roles have read, write, and invoke permission for all non-encrypted attributes and operations in this MBean: Deployer
Fully Qualified Interface Name | If you use the `getMBeanInfo` operation in MBeanTypeServiceMBean, supply the following value as this MBean's fully qualified interface name: `weblogic.management.configuration.JMSDistributedQueueMBean` For more information, see: UniformDistributedQueueBean}
Factory Methods | No factory methods. Instances of this MBean are created automatically.
Access Points Inherited from DeploymentMBean | Because this MBean extends or implements DeploymentMBean, you can also access this MBean by retrieving DeploymentMBeans. The following attributes contain DeploymentMBeans and its subtypes:
DomainMBean.Deployments |
Deprecated Factory Methods and Access Points |
JMSDistributedDestinationMBean JMSVirtualDestinationMBean |

## Related MBeans

This section describes attributes that provide access to other MBeans. For more information about the MBean hierarchy, refer to WebLogic Server MBean Data Model.

Targets Template |

### Targets

You must select a target on which an MBean will be deployed from this list of the targets in the current domain on which this item can be deployed. Targets must be either servers or clusters. The deployment will only occur once if deployments overlap.

Privileges | Read/Write
Type | TargetMBean[]
Relationship type: | Reference.

### Template

The JMS template from which the distributed destination is derived.

Privileges | Read/Write
Type | JMSTemplateMBean
Relationship type: | Reference.
Redeploy or Restart required | Changes take effect after you redeploy the module or restart the server.

## Attributes

This section describes the following attributes:

DeploymentOrder ForwardDelay JNDIName LoadBalancingPolicy Name | Notes Parent Type

### DeploymentOrder

A priority that the server uses to determine when it deploys an item. The priority is relative to other deployable items of the same type.

For example, the server prioritizes and deploys all EJBs before it prioritizes and deploys startup classes.

Items with the lowest Deployment Order value are deployed first. There is no guarantee on the order of deployments with equal Deployment Order values. There is no guarantee of ordering across clusters.

Privileges | Read/Write
Type | int
Default Value | 1000
Minimum value | 0
Maximum value | 2147483647

### ForwardDelay

The amount of time (in seconds) that a distributed queue member with messages, but no consumers, will wait before forwarding its messages to other queue members that do have consumers. A value of `-1` (the default) indicates that no messages are forwarded to other queue members.

A value of -1 indicates that no messages are forwarded to other queue members.

Privileges | Read/Write
Type | int
Default Value | -1
Secure value | -1

### JNDIName

The JNDI name used to look up a virtual destination within the JNDI namespace. Applications can use the JNDI name to look up the virtual destination. If not specified, then the destination is not bound into the JNDI namespace.

Privileges | Read/Write
Type | java.lang.String

### LoadBalancingPolicy

Defines the load balancing policy for producers sending messages to a distributed destination in order to balance the message load across the members of the distributed set.

- Round-Robin

  - The system maintains an ordering of physical topic members within the set by distributing the messaging load across the topic members one at a time in the order that they are defined in the configuration file. Each WebLogic Server maintains an identical ordering, but may be at a different point within the ordering. If weights are assigned to any of the topic members in the set, then those members appear multiple times in the ordering.

- Random

  - The weight assigned to the topic members is used to compute a weighted distribution for the members of the set. The messaging load is distributed across the topic members by pseudo-randomly accessing the distribution. In the short run, the load will not be directly proportional to the weight. In the long run, the distribution will approach the limit of the distribution. A pure random distribution can be achieved by setting all the weights to the same value, which is typically set to 1.

Privileges | Read/Write
Type | java.lang.String
Default Value | Round-Robin
Legal Values | Round-Robin Random

### Name

The user-specified name of this MBean instance.

This name is included as one of the key properties in the MBean's `javax.management.ObjectName`:
`Name=user-specified-name`

Privileges | Read/Write
Type | java.lang.String

### Notes

Optional information that you can include to describe this configuration.

WebLogic Sever saves this note in the domain's configuration file (`config.xml`) as XML PCDATA. All left angle brackets (<) are converted to the XML entity `&lt;`. Carriage returns/line feeds are preserved.

Note:

  If you create or edit a note from the Administration Console, the Administration Console does not preserve carriage returns/line feeds.

Privileges | Read/Write
Type | java.lang.String

### Parent

Return the immediate parent for this MBean

Privileges | Read/Write
Type |

### Type

Returns the type of the MBean.

Privileges | Read only
Type | java.lang.String
Redeploy or Restart required | Changes take effect after you redeploy the module or restart the server.

## Operations

This section describes the following operations:

addTarget freezeCurrentValue isSet removeTarget | restoreDefaultValue unSet

### addTarget

You can add a target to specify additional servers on which the deployment can be deployed. The targets must be either clusters or servers.

Operation Name | `"addTarget"`
Parameters | `Object [] { target }` where: `target` is an object of type `weblogic.management.configuration.TargetMBean` that specifies: The feature to be added to the Target attribute
Signature | `String [] { "weblogic.management.configuration.TargetMBean" }`
Returns | `boolean`
Exceptions | `javax.management.InvalidAttributeValueException` `weblogic.management.DistributedManagementException`

### freezeCurrentValue

If the specified attribute has not been set explicitly, and if the attribute has a default value, this operation forces the MBean to persist the default value.

Unless you use this operation, the default value is not saved and is subject to change if you update to a newer release of WebLogic Server. Invoking this operation isolates this MBean from the effects of such changes.

Note:

  To insure that you are freezing the default value, invoke the `restoreDefaultValue` operation before you invoke this.

This operation has no effect if you invoke it on an attribute that does not provide a default value or on an attribute for which some other value has been set.

Deprecated. 9.0.0.0

Operation Name | `"freezeCurrentValue"`
Parameters | `Object [] { attributeName }` where: `attributeName` is an object of type `java.lang.String` that specifies: attributeName
Signature | `String [] { "java.lang.String" }`
Returns | `void`
Exceptions | `javax.management.AttributeNotFoundException` `javax.management.MBeanException`

### isSet

Returns true if the specified attribute has been set explicitly in this MBean instance.

Operation Name | `"isSet"`
Parameters | `Object [] { propertyName }` where: `propertyName` is an object of type `java.lang.String` that specifies: property to check
Signature | `String [] { "java.lang.String" }`
Returns | `boolean`

### removeTarget

Removes the value of the addTarget attribute.

For more information, see:

- UniformDistributedQueueBean}

Operation Name | `"removeTarget"`
Parameters | `Object [] { target }` where: `target` is an object of type `weblogic.management.configuration.TargetMBean` that specifies: target
Signature | `String [] { "weblogic.management.configuration.TargetMBean" }`
Returns | `boolean`
Exceptions | `javax.management.InvalidAttributeValueException` `weblogic.management.DistributedManagementException`

### restoreDefaultValue

If the specified attribute has a default value, this operation removes any value that has been set explicitly and causes the attribute to use the default value.

Default values are subject to change if you update to a newer release of WebLogic Server. To prevent the value from changing if you update to a newer release, invoke the `freezeCurrentValue` operation.

This operation has no effect if you invoke it on an attribute that does not provide a default value or on an attribute that is already using the default.

Deprecated. 9.0.0.0

Operation Name | `"restoreDefaultValue"`
Parameters | `Object [] { attributeName }` where: `attributeName` is an object of type `java.lang.String` that specifies: attributeName
Signature | `String [] { "java.lang.String" }`
Returns | `void`
Exceptions | `javax.management.AttributeNotFoundException`

### unSet

Restore the given property to its default value.

Operation Name | `"unSet"`
Parameters | `Object [] { propertyName }` where: `propertyName` is an object of type `java.lang.String` that specifies: property to restore
Signature | `String [] { "java.lang.String" }`
Returns | `void`