Petascope writes the exception text to client even when it cannot start

[Bang Pham Huu]

For example petascope in version 9.5 and it cannot start with old petascopedb version 9.4 and it cannot start then all the request to this petascope (e.g: localhost:8080/rasdaman/ows will just return error 404 not found and user need to check in petascope log file or catalina.out)

it should somehow stores the exception text and still can serve any request to localhost:8080/rasdaman/ows with the error text.

e.g: in the above case, it should say "please migrate petascopedb version 9.4 to 9.5 then restart tomcat".

[Dimitar Misev]

Yes, it should catch whatever exception happens that prevents it from starting.