Java Application "java.lang.OutOfMemoryError: Direct buffer memory"

Solution Unverified - Updated -

Issue

  • "java.lang.OutOfMemoryError: Direct buffer memory" in the JBoss server log
  • One of the slave machines gets disconnected from the Domain Controller and starts throwing this error:
[Host Controller] 16:36:41,136 ERROR [org.xnio.listener] (management I/O-2) XNIO001007: A channel event listener threw an exception: java.lang.OutOfMemoryError: Direct buffer memory

Environment

  • Java
    • OpenJDK
    • Oracle JDK

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