Sending messages with payloads that are 100 MB or larger in size can exceed JVM heap size limits if not correctly tuned.

For example, when sending large payloads in the event delivery network (EDN) with Oracle advanced queueing (AQ) JMS, ensure that you set the maximum memory value by first testing with a typical message payload size and a maximum potential message size. Using a lesser memory value can result in an ORACLE.JMS.AQJMSEXCEPTION error. For example, to send a payload of 100 MB, it is recommended that you change the JTA time out and maximum memory to 5 GB.

For more information about tuning the JVM heap size, see General Tuning Recommendations and Section "Java HotSpot VM Heap Size Options" of Tuning Performance of Oracle WebLogic Server.