15 Oracle Coherence Clusters

This chapter describes how to monitor Oracle 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.

Note:

If you are logged into a domain partition, navigate from the Domain Partition menu.

This chapter includes the following sections:

Create Oracle Coherence clusters

This section describes how to create managed Oracle Coherence clusters and how to add standalone Oracle Coherence clusters. Managed Oracle Coherence clusters are comprised of managed Oracle Coherence servers that are part of a WebLogic Server domain. Standalone Oracle Coherence clusters are comprised of Oracle Coherence servers that are not part of a WebLogic Server domain.

This section includes the following tasks:

Create managed Oracle Coherence clusters

To create a new managed Oracle Coherence cluster:

  1. From the WebLogic Domain menu, select Environment, then select Coherence Clusters.
  2. Select Managed.

    The Coherence Clusters table displays information about the managed Oracle Coherence clusters that are configured in the current domain.

  3. Click Create.

    Define the configuration options for your new configured cluster on each of the following pages:

  4. Click Create.

Properties

On the Properties page, define the general cluster properties for your new managed Oracle 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. Oracle 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 Oracle 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.

Members

On the Members page, you can specify the WebLogic Server clusters or specific managed servers to associate with this managed Oracle Coherence cluster.

For more information, see Configuration Options.

Review

On the Review page, review the configuration for your new managed Oracle Coherence cluster.

For more information, see Configuration Options.

Add standalone Oracle Coherence clusters

To add a standalone Oracle Coherence cluster:

  1. From the WebLogic Domain menu, select Environment, then select Coherence Clusters.
  2. Select Standalone.

    The Coherence Clusters table displays information about the standalone Oracle Coherence clusters that are configured in the current domain.

  3. Click Add.
  4. On the Add Standalone Cluster page, enter the connection properties for an existing standalone Oracle 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.

  5. Click Add.

For more information about these fields, see Configuration Options.

Edit standalone cluster settings

This section describes how to edit standalone cluster settings. This section includes the following tasks:

Edit standalone Oracle Coherence cluster general settings

To edit the general settings for a standalone Oracle Coherence cluster:

  1. Select each text field and update the value as required.
  2. 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.
  3. Click Save to keep the changes. Click Revert to discard the changes.

For more information about these fields, see Configuration Options.

Edit standalone Oracle Coherence cluster notes

To edit the notes for a standalone Oracle Coherence cluster:

  1. In the text field, update the text as required.
  2. Click Save to keep the changes. Click Revert to discard the changes.

For more information about these fields, see Configuration Options.

Monitor Oracle Coherence clusters

This section describes how to monitor Oracle Coherence clusters.

This section includes the following tasks:

Monitor managed Oracle Coherence clusters

To monitor a Managed Oracle Coherence cluster:

  1. From the WebLogic Domain menu, select Environment, then select Coherence Clusters.
  2. Select Managed.

    The Coherence Clusters table displays information about the managed Oracle 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.

  3. 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

  4. From the table, select a cluster in the Name column to go to the Oracle Coherence Cluster Home Page for the selected cluster. The home page provides detailed resource performance monitoring.

Monitor standalone Oracle Coherence clusters

To monitor a standalone Oracle Coherence cluster:

  1. From the WebLogic Domain menu, select Environment, then select Coherence Clusters.
  2. Select Standalone.

    The Coherence Clusters table displays information about the standalone Oracle 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 Oracle 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.

  3. 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

  4. 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.