Issue: Apache tomcat service stop automatically.


Reason:  

Apache memory utilization is high.


Solution:

Go to Below path and just increase the memory allocation for Apche tomcat


C:\Program Files\Apache Software Foundation\Tomcat 7.0\bin


There you will find 


Tomcat7w

Right click and run with administrator

Pop-up window will appear in that go to Java.


Memory should be atleast some __GB accordingly to PC RAM.