Coherence Clusters
Column Display Related Tasks Related Topics
Coherence provides replicated and distributed data management and caching services that you can use to reliably make an application's objects and data available to all servers in a Coherence cluster. To do this, WebLogic Server retains configuration information used to locate and communicate with a Coherence cluster.
This page displays the Coherence cluster configurations that have been created in this domain.
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 Name Name of this Coherence cluster configuration.
Custom Configuration File The name of a custom Coherence operational configuration override file.
MBean Attribute:
WeblogicCoherenceBean.CustomClusterConfigurationFileName
Changes take effect after you redeploy the module or restart the server.
Clustering Mode Specifies a clustering mode of either Unicast or Multicast. If multicast is undesirable or unavailable in an environment, or when an environment is not properly configured to support multicast, then setting up the Well Known Addresses (WKA) feature is required. All cluster multicast communication is disabled if WKA is enabled.
MBean Attribute:
CoherenceClusterParamsBean.ClusteringMode
Changes take effect after you redeploy the module or restart the server.
Transport Specify the underlying transport protocol to use for cluster communication.
MBean Attribute:
CoherenceClusterParamsBean.Transport
Changes take effect after you redeploy the module or restart the server.
Security Framework Enabled Check if security framework is enabled
MBean Attribute:
CoherenceClusterParamsBean.SecurityFrameworkEnabled
Changes take effect after you redeploy the module or restart the server.
Unicast Listen Port The port for the cluster unicast listener. A value of 0 indicates that the unicast listener port value will be derived from the server listen port. This value or the derived value will be used only if the CoherenceMemberConfigMBean unicast listen port is 0.
MBean Attribute:
CoherenceClusterParamsBean.UnicastListenPort
Minimum value:
0
Maximum value:
65535
Changes take effect after you redeploy the module or restart the server.
Unicast Port Auto Adjust Specifies whether the unicast port will be automatically incremented if the port cannot be bound because it is already in use.
MBean Attribute:
CoherenceClusterParamsBean.UnicastPortAutoAdjust
Changes take effect after you redeploy the module or restart the server.
Multicast Listen Address The IP address for the cluster multicast listener.
MBean Attribute:
CoherenceClusterParamsBean.MulticastListenAddress
Changes take effect after you redeploy the module or restart the server.
Multicast Listen Port The port for the cluster multicast listener.
MBean Attribute:
CoherenceClusterParamsBean.MulticastListenPort
Minimum value:
1
Maximum value:
65535
Changes take effect after you redeploy the module or restart the server.
Time To Live Sets the time-to-live (TTL) setting for the multicast message. The TTL setting designates how far multicast UDP/IP packets can travel on a network. The TTL is expressed in terms of how many hops a packet survives; each network interface, router, and managed switch is considered one hop. The TTL value should be set to the lowest integer value that works. Setting the value too high can use unnecessary bandwidth on other LAN segments and can even cause the operating system or network devices to disable multicast traffic.
Typically, setting the TTL value to 1 works on a simple switched backbone. A value of 2 or more may be required on an advanced backbone with intelligent switching. A value of 0 is used for single server clusters that are used for development and testing.
MBean Attribute:
CoherenceClusterParamsBean.TimeToLive
Minimum value:
0
Maximum value:
255
Changes take effect after you redeploy the module or restart the server.
Logging Enabled Specifies whether custom Coherence logging is enabled.
MBean Attribute:
CoherenceLoggingParamsBean.Enabled
Changes take effect after you redeploy the module or restart the server.
Members Servers and clusters on which this Coherence cluster configuration is associated with.