Oracle Fusion Middleware Documentation > Oracle WebLogic Server 12.1.3.0 Documentation > Administration Console Online Help > Increasing the Java Heap size for a managed server

Administration Console Online Help

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Increasing the Java Heap size for a managed server


For better performance, you may need to increase the heap size for each Managed Server in your environment. If you use Node Manager to start the Managed Servers, you can specify a heap size as a Java argument on the Server Start tab for each Managed Server.

To change the Java Heap size for a managed server:

  1. If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit (see Use the Change Center).
  2. In the left pane of the console, expand Environment > Servers.
  3. In the Servers table, click the name of the server instance you want to configure.
  4. On the Configuration tab, click Server Start.
  5. In the Arguments field, specify the Java option to increase the heap size. For example: -Xmx1024m
  6. Click Save.
  7. To activate these changes, in the Change Center of the Administration Console, click Activate Changes.
    Not all changes take effect immediately—some require a restart (see Use the Change Center).

After you finish

You must reboot the server to use the new heap values.


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