Servlet engine using Oracle jdbc causes JVM 1.3.1 to hang on heavy load.
truss, dbx and pstack during the hang show thread deadlocks. It is not
possible to make a thread dump.

Information provided in attachment :

- pstack output during hang
- truss 1min before and after the hang
- showrev -p
- prtdiag of the system
- dbx stacks of several threads

Other information available :
- gcore of the jvm during the hang.