So how does this relate to error trapping in CFMX? Is there a difference between standard and enterprise?
Not really. Error trapping in CFMX is just like any other application error. If its a webserver error then it never got to CFMX to process so no trapping. If its a JRUN internal error then something has gone wrong beneath CFMX as it were -- you need to look to the JRUN logs to try and get additional information.
Can you trap JRUN and Web server errors from CFMX -- generally no. This is because CF has not had a chance to process the request. But both the application server and the web server have their own error trapping and or diagnostic options.
In terms of robustness, security ... Is Tomcat/WebSphere/weblogics and better solution that jrun over IIS/Apache?
Tomcat/WebSphere/weblogics must also run with IIS or Apache. I'd say JRUN is pretty robust. You're going to get just as cryptic errors with any of those application servers if not worse.
Just did a quick bit of reading and it looks like tomcat is a plugin for Apache and IIS.
Tomcat is NOT a web server plug-in. It is a J2EE application server. There will no doubt be a web connector for both IIS and Apache (ie. something that lets Tomcat talk to the web server).
Hmmm, maybe IIS is not such an issue.
My concerns (probably due to a misunderstanding) are the relationship / coupling of CFMX, java application server and the web server. From an (CF) application point of view, what can a developer do do handle jrun / webserver (internal error 500)? ie, what happens when the rug is pulled out from under your feet?
Is this the file upload issue you were talking about earlier? Can you replicate the issue in your development environment or does it only happen in production? What are the steps to produce the error?
If this is really becoming an issue you should raise a support ticket with the Macromedia engineering team. Generally once you get through the call centre and have your ticket, Macromedia CFMX support is very good.
-- geoff http://www.daemon.com.au/
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