tomcat hangs

[Mehrdad Taagholi]

HiI use apache tomcat 8.0.32 and oracle-jdk-8u66 and redhat 6.After working 
with the system for a few hours and the load on the system increases, suddenly 
the tomcat hangs and no logs are printed and it is not possible to connect via 
jvisualvm and I can not get any dump and I have to reload Tomcat.I have 
increased maxthreads and use the HttpProtocol protocol.Please suggest a way to 
fix the my tomact.