Apache httpd fails to proxy with "ajp_msg_append_cvt_string(): BufferOverflowException 4 8186" error

Solution Verified - Updated -


  • Some requests are failing to proxy through httpd to JBoss and we see the following error:

    [error] ajp_msg_append_cvt_string(): BufferOverflowException 4 8186


  • Red Hat Enterprise Linux (RHEL)
  • Red Hat JBoss Web Server (JWS)
  • Red Hat JBoss Core Services (JBCS)
  • Red Hat JBoss Enterprise Application Platform (EAP)
  • Apache Web Server (HTTPD)
    • mod_proxy
    • mod_cluster

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