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Oracle® SuperCluster M8 and SuperCluster M7 Administration Guide

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Updated: June 2020

Create a Grid Link Data Source on Dept1_Cluster1

Create a grid link data source for each of the Oracle database instances during the process of setting up the multidata source, both for these data sources and the global leasing multidata source.

  1. Prepare to create the data source.
    1. Ensure that this is a non-xa data source.
    2. Target these data sources to the Dept1_Cluster1 cluster.
    3. Set the data sources connection pool initial capacity to 0.
      1. In the Oracle WebLogic Server Administration Console, select Services, JDBC, and then Datasources.
      2. In the Datasources screen, click the Datasource Name, then click the Connection Pool tab, and enter 0 in the Initial capacity field.
    4. Ensure that an ONS daemon is running on your database servers at all times. Start the ONS daemon on a database server by running the onsctl command.


  2. Log in to the Oracle WebLogic Server Administration Console.
  3. If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit.
  4. In the Domain Structure tree, expand Services, then select Data Sources.
  5. On the Summary of Data Sources page, click New and select GridLink Data Source.
  6. Enter the following information, then click Next.
    • Logical name for the datasource in the Name field. For example, gridlink.

    • Name for JNDI. For example, jdbc/gridlink.

  7. In the Transaction Options page, deselect Supports Global Transactions, and click Next.
  8. Select Enter individual listener information and click Next.
  9. Enter the following connection properties:
    • Service Name – Enter the name of the RAC service in the Service Name field. For example, enter myService in Service Name.

      Note -  The Oracle RAC service name is defined on the database, and it is not a fixed name.
    • Host Name – Enter the DNS name or IP address of the server that hosts the database. For an Oracle GridLink service-instance connection, this must be the same for each data source in a given multi data source.

    • Port – Enter the port on which the database server listens for connections requests.

    • Database User Name – Enter the database user name. For example, myDataBase.

    • Password – Enter the password. For example, myPassword1.

      Confirm the password and click Next.

    Tip  -  For more information, refer to the Oracle Fusion Middleware Oracle WebLogic Server Administration Console Online Help.

    The console automatically generates the complete JDBC URL. For example:


  10. On the Test GridLink Database Connection page, review the connection parameters and click Test All Listeners.

    Oracle WebLogic attempts to create a connection from the administration server to the database. Results from the connection test are displayed at the top of the page. If the test is unsuccessful, you should correct any configuration errors and retry the test.

    Click Next.

  11. In the ONS Client Configuration page, set up FAN notifications.
    1. Select Fan Enabled to subscribe to and process FAN events.
    2. In the ONS host and port fields, enter a comma-separated list of ONS daemon listen addresses and ports for receiving ONS-based FAN events.

      You can use SCAN addresses to access FAN notifications.

    3. Click Next.
  12. On the Test ONS Client Configuration page, review the connection parameters and click Test All ONS Nodes.

    Click Next.

  13. In the Select Targets page, select Dept1_Cluster1 as the target and All Servers in the cluster.
  14. Click Finish.
  15. Click Activate Changes.
  16. Configure SDP-enabled JDBC drivers for the cluster.

    For instructions, see Configuring SDP-Enabled JDBC Drivers for Dept1_Cluster1.

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