SOA + Fusion + Weblogic + Oracle 11g - STUCK threads
Should be addressed by patch 12573835.  Hopefully fixed for good in 12.x.

Edit - patch 12573835 is moderated &amp; password-protected on support.oracle.com.  Its recommended only for BPM customers, which we are not, so no support has been given.  We have applied the January SOA critical patch and are still seeing the issue under load ("load" meaning 2 requests per minute, not much of a load but whatever, we can disagree).  So, there is no acceptable solution at the moment.