When using the WebSphere, Which three updates would force you to restart the test environment?

These are the situation when you need to restart the server in test mode.
1) When you make any changes to the Class file(Bean , DAO etc)
2) Change any properties that were declared in properties file related to the whole application.
   This is because initially properties file that were declared for the application will be loaded only when the server starts, and the server picks up thos key, values
3) No need to restart if you make any change for jsp file. But you need to comeout of that particular page or refresh the page , so that it will recompile the modified jsp file and generate new contents
 But you need to restart the server when you change the servlet file.
4) If the database connection between the DB server and APpserver fails. Because
the connection pool and all will be declared in the properties file.

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