Threads Blocked in org.jboss.web.tomcat.service.WebCtxLoader$ENCLoader

Issue

• Thread dumps on the application showed that most of the application threads used for the business functionality were blocked by a single lock: BLOCKED on org.jboss.web.tomcat.service.WebCtxLoader$ENCLoader. For example:

"http-localhost-8080-13" - Thread t@280
   java.lang.Thread.State: BLOCKED on org.jboss.web.tomcat.service.WebCtxLoader$ENCLoader@5050c52b owned by: http-host1.example.com%2F199.81.100.127-7583-16
    at java.lang.ClassLoader.loadClass(ClassLoader.java:292)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    at org.apache.xerces.parsers.ObjectFactory.findProviderClass(Unknown Source)
    at org.apache.xerces.parsers.ObjectFactory.newInstance(Unknown Source)
    at org.apache.xerces.parsers.ObjectFactory.createObject(Unknown Source)
    ...