This question is part tomcat and part java; I'm running on a Windows
2000 server.
I have a situation where I am going to need to run multiple instances of
tomcat on a single machine, listening on different ports, but running
the same application and hitting a different instance of an identical
database (same schema, but on a different server). So what I will need
to do is be able to tell each instance of the application on its
respective instance of tomcat which database to hit.
Can I pass a parameter into tomcat from a conf file based on what port
that instance of tomcat is listening on, and then get that parameter
into my application? If so, how?
Another option is for my application to grab the machine name and port
that it is handling, and hit a "common" database to get the information
on what copy of the production to use. But again, I need my app to be
able to find port information from tomcat, and I don't know how to do that.
It seems like a 3rd option might be to run each instance of tomcat as a
service, logged on with different accounts, and use a user DSN instead
of a system DSN, with the same DSN name, but different connection info.
Is that possible?
If necessary, I could install multiple instances of my app at different
context paths, but I still don't know how to tell them to pick up the
correct database connection info. I guess I could make a code change in
the first page they hit, the logon.jsp, for each instance, but I'd
rather not have to do that unless there really is no other way, because
that would be easy to screw up when making changes later on...
Any suggestions as to which of the above approaches would be the best,
or another one I haven't thought of?
Thanks!
DAve
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