You may encounter an error in the Strong Authentication logs such as;
ex:Error java.lang.OutOfMemoryError: PermGen space
This indicates that the memory for Tomcat is out of memory. Some symptoms that you may have noticed is that Tomcat is locking up, and restarting services only helps for a short period of time. You will want to increase physical memory, and to do so follow the steps below.
For windows and Tomcat 7
This issue could strictly be Tomcat running out of memory and you may just need to increase the memory from to Tomcat. However, this can run deeper. The memory on your machine may be running out failing to give the appropriate resources to tomcat and increasing the memory to tomcat may cause more issues to other parts to your system. CPU Utilization may also cause the memory issue to Tomcat. If the settings above do not work, further analysis on Tomcat, Java and the system should be done.