* I haven't any problem but i want to learn something about tomcat. What is Engine?What does it do? What happened when we use 2 Engine in one server.xml? What is advantage and disadvantages about 2 Engine? There are 2 Engines default in server.xml. Have i use only one Engine?or can i use more tha one?
* Can i create server base datasource? Or only create application base?
* Where tomcat firstly look for context.xml What is the sequence of looking context.xml in tomcat. Like that firstly look server.xml in the application. Next look common context.xml file in TOMCAT/conf, then that's go on. Have someone have any idea?
* How is thread pool in tomcat? How can we change its configurations? Are there any file about that? or in which file, configuration take place.