Session Var set onSessionStart is Undefined

Hello,
I am having an issue with a session variable becoming undefined. The var is set (cfparam) on the Application.cfc page in the onSessionStart function. How is it possible for the variable to be undefined if it is set when the session starts? If the session has expired, wouldn't the onSessionStart function run, thus creating the var again? I have this problem on a couple of different applications and I am not sure why it is happing. Any ideas?
CF9
Thanks,
Josh

JavaScript runs on the Client. ColdFusion runs on the server. They do not talk to each other or share memory.
The only way to get data from the client to the server is to make a request. The only way to get data from the server to the client is to respond to a request.
You can make that request by submitting a form either in the get or post scope.
You can make that request by sumitting a request with the xmlHTTPrequest() function, commonly called AJAX.
But somehow or the other you have to make a request.

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ok, I set a session var to about 2K of text
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dnagel wrote:
> ok, I set a session var to about 2K of text
>
> I have an iframe which is part of a menu navigation
system.
> The content of that iframe is slow to get from the DB so
I
> cache the HTML for it into a session var.
>
> If a user clicks a link, the iframe submits to itself,
does
> a few things, and then cflocation's out to the chosen
page.
>
> The next time this iframe is loaded( almost immediately)
it
> reads the session var and it is EMPTY!
>
> I'm not overwriting it, not structDelete'ing it, Any
time I
> set it outside of this page, it's done with a check to
see
> if it isDefined first, and if so, does nothing.
>
> Are there known issues with CFParam? large text session
vars?
>
> WTF?
>
>
> D.
So, I pulled out Fiddler, and lo and behold I was
making a call to my page with no params at one part
of the load and then later on, calling it again
properly with the correct params. I'm checking
for an empty URL param set now and all is well...
Thanks for your time on this folks!
D.

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Chris wrote:
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Session Var set onSessionStart is Undefined

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