IIS Crashing with Server Application Unavailable

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asp.netprogrammer - 06 Oct 2005 15:09 GMT

We are running a ASP.NET application which uses a COM DLL to go to active
directory and a couple of dataabases. There is no UI to the ASP.NET
application it just returns an XML back with the results. This ASP.NET
appplication is called by another ASp.NET application.

PROBLEM: About 4 to 5 times a day we start getting Errors from IIS. Server
application Unavailable and rebooting the machine solves the issue.

Somebody knows what the problem could be ?
Is it a memory leak ? if yes how can we monitor it. what tools we can use ?
can we run the COM dll in a managed environment ?

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John Kortis - 19 Oct 2005 17:49 GMT

Somewhere you are not freeing your COM resources.
This can do several things:
1. Create resource leaks consuming memory until failing and the server just
crashses or

2. Locking some threaded resources which never release and cause the system
to crash.

I have an inkling it is the former.

If you want tools check out www.sysinternals.com

> We are running a ASP.NET application which uses a COM DLL to go to active
> directory and a couple of dataabases. There is no UI to the ASP.NET
[quoted text clipped - 7 lines]
> Is it a memory leak ? if yes how can we monitor it. what tools we can use ?
> can we run the COM dll in a managed environment ?

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IIS Crashing with Server Application Unavailable

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