This chapter describes how to monitor Coherence clusters. Oracle Coherence is a component of Oracle Fusion Middleware that enables organizations to predictably scale mission-critical applications by providing fast and reliable access to frequently used data.
By automatically and dynamically partitioning data in memory across multiple servers, Oracle Coherence enables continuous data availability and transactional integrity, even in the event of a server failure. As a shared infrastructure, Oracle Coherence combines data locality with local processing power to perform real-time data analysis, in-memory grid computations, and parallel transaction and event processing.
This chapter includes the following sections:
This section describes how to create managed Coherence clusters and how to add standalone Coherence clusters. Managed Coherence clusters are comprised of managed Coherence servers that are part of a WebLogic domain. Standalone Coherence clusters are comprised of Coherence servers that are not part of a WebLogic domain.
This section includes the following tasks:
To create a new managed Coherence cluster:
From the WebLogic Domain dropdown menu, select Environment, then select Coherence Clusters.
Select Managed.
The Coherence Clusters table displays information about the managed Coherence clusters that are configured in the current domain.
Click Create.
Define the configuration options for your new configured cluster on each of the following pages:
Click Create.
On the Properties page, define the general cluster properties for your new managed Coherence cluster:
Name: enter a unique name for your cluster.
Clustering Mode: if you selected Configure within WebLogic Server, then select either unicast or multicast for the cluster network transmission.
Cluster Listen Port: if you selected Configure within WebLogic Server, then enter the cluster listen port. Coherence cluster members use this port to discover and join, or create, the cluster. The default port is 7574.
Multicast Listen Address: if you selected Configure within WebLogic Server and you are using multicast, enter an IP address for the cluster multicast listener.
Custom Configuration File Name: if you selected Use a Custom Configuration File, enter the location of a Coherence cluster configuration file that defines the cluster properties. You can click Browse to navigate to the file location.
For more information about these fields, see Configuration Options.
On the Members page, you can specify the WebLogic Server clusters or specific managed servers to associate with this managed Coherence cluster.
For more information, see Configuration Options.
On the Review page, review the configuration for your new managed Coherence cluster.
For more information, see Configuration Options.
To add a standalone Coherence cluster:
From the WebLogic Domain dropdown menu, select Environment, then select Coherence Clusters.
Select Standalone.
The Coherence Clusters table displays information about the standalone Coherence clusters that are configured in the current domain.
Click Add.
On the Add Standalone Cluster page, enter the connection properties for an existing standalone Coherence cluster:
Cluster Name: enter the cluster name.
Cluster Port: enter the port that is used for cluster communication.
Notes: enter additional information about the cluster.
In the Credentials section, enter a valid Username and Password if authentication is required on the cluster.
In the Management Node Hosts section, enter the host name of a cluster node where JMX management has been enabled. Click Add to enter additional hosts. To delete a host, select the host and click Delete.
Click Add.
For more information about these fields, see Configuration Options.
This section describes how to edit standalone cluster settings. This section includes the following tasks:
To edit the general settings for a standalone Coherence cluster:
Select each text field and update the value as required.
In the Management Node Hosts section, click Add to enter a new host or select a host and click Delete to remove the host from the list. Use the Notes column to enter additional information about a host.
Click Save to keep the changes. Click Revert to discard the changes.
For more information about these fields, see Configuration Options.
To edit the notes for a standalone Coherence cluster:
In the text field, update the text as required.
Click Save to keep the changes. Click Revert to discard the changes.
For more information about these fields, see Configuration Options.
This section describes how to monitor Coherence clusters.
This section includes the following tasks:
To monitor a Managed Coherence cluster:
From the WebLogic Domain dropdown menu, select Environment, then select Coherence Clusters.
Select Managed.
The Coherence Clusters table displays information about the managed Coherence clusters that have been configured in the current domain. The table provides an overview of how the cluster is configured and the operational status of the cluster.
Name
Status
Logging Enabled
Members
Custom Configuration File
Clustering Mode
Transport
Security Framework Enabled
Unicast Listen Port
Unicast Port Auto Adjust
Multicast Listen Address
Multicast Listen Port
Time To Live
For more information about the columns in the table, see Configuration Options.
Optionally, select View to access the following table options:
Columns: add or remove the columns displayed in the table
Detach: detach the table (viewing option)
Sort: sort the columns in ascending or descending order
Reorder: change the order of the columns displayed
Query by Example
From the table, select a cluster in the Name column to go to the Coherence Cluster Home Page for the selected cluster. The home page provides detailed resource performance monitoring.
To monitor a standalone Coherence cluster:
From the WebLogic Domain dropdown menu, select Environment, then select Coherence Clusters.
Select Standalone.
The Coherence Clusters table displays information about the standalone Coherence clusters that have been configured in the current domain. The table provides an overview of the connection settings and the operational status of the cluster. Use the Target Navigation menu to access the Coherence Cluster Home Page for detailed cluster resource and performance monitoring.
Name
Status
Cluster Port
Management Node Hosts
Notes
For more information about these fields, see Configuration Options.
Optionally, select View to access the following table options:
Columns: add or remove the columns displayed in the table
Detach: detach the table (viewing option)
Sort: sort the columns in ascending or descending order
Reorder: change the order of the columns displayed
Query by Example
From the table, select a cluster in the Name column to the edit the connection settings for the selected cluster.
For details on editing standalone cluster connections settings, see Edit standalone cluster settings.