Send Hosts per Send Port?

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Hello,

Does anyone know why we can configure the BizTalk Host per Receive Location in BizTalk 2004, but can't do the same for individual Send Ports? When sending messages from BizTalk, you can only configure the Send Host per adapter.

My situation is this: I have two distinct business processes running through a single BizTalk server. One is relatively high volume but not business critical, and the other is lower volume but very business critical. Both use the same Send adapter, which is a custom adapter that is basically a proxy to a .NET WebService. Maybe you can see where this is going.

Now, the higher volume business process occasionally spikes high enough that it causes the adapter in question to start raising "There were not enough threads available in the thread pool..." messages from the .NET WebRequest class, basically because the ThreadPool is starved and the WebRequest checks to make sure that at least two threads are available in the pool before performing its operation.

I'm updating the thread pool settings referenced here [1] to increase the size of the Thread Pool. However, what I'd really like to do is to isolate my two different business processes into their own hosts, so that a spike in volume for one process won't cause failures in the second, more critical process.

However, I can't seem to configure two different send ports using the same adapter to go to different BizTalk Hosts. Does anyone have any suggestions? I suppose I could create a new custom adapter that's just like my current one, but I'd like to find a better option, if there is one.

Thanks,
Craig Vermeer

[1] http://support.microsoft.com/default.aspx?scid=kb;en-us;886966
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