Appendix D: Changing Size Limits for Oracle WebLogic Server

To change the size limits for Oracle WebLogic Server, following the steps below:

  1. Configure the System Property -Dweblogic.MaxMessageSize

    2. This setting applies to all WebLogic Server network packets delivered to the client, not just JMS related packets.

  2. Using the WLS console for the admin and all the managed server, increase the value of the Maximum Message Size field found under the Protocols > General tab for the server.

    3. Default size is 10 MB and is configured on a per WebLogic Server instance basis using the console.

  3. Using the WLS console for the admin and all the managed server, increase the value of the Maximum Message Size field found under the Configuration > Thresholds and Quotas tab for the queue.

    4. The default value is quite high, as high as 2,147,483,647 bytes (around 2 GB).

Even after setting all the values, the message for the user posts may not be up to the maximum size limit, as it may be limited by the physical limitation of memory for the WebLogic Server.