Hi Bernd, Many thanks for your suggestions. It looks like the native APR library was the issue, at least it hasn't crashed yet after removing that library
https://tomcat.apache.org/tomcat-8.0-doc/apr.html (the libapr1 package in Ubuntu) and re-configuring the /etc/tomcat8/server.xml to use NIO for SSL, replacing org.apache.coyote.http11.Http11AprProtocol with org.apache.coyote.http11.Http11NioProtocol. I appreciate your help, it saved my bacon! Oliver On 21 June 2018 at 23:34:44, Oliver Kohll (oli...@agilechilli.com) wrote: Aha, I wonder if it's configured with the APR native library for SSL. I will check out that and those things. Thanks Oliver On 21 June 2018 at 21:43:24, Bernd Eckenfels (e...@zusammenkunft.net) wrote: Are you using any native libraries in this VM, is there a hs_err or System core file? Can you run „ldd“ on the java launcher binary. Can you try a OpenJDK binary distribution independent of the OS compiled version? Gruss Bernd -- http://bernd.eckenfels.net