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Multiple instances of skeds - 6 September 2004
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sonya
Posts: 5
Score: 0
Joined: 1 September 2004
Status: offline
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Hi Pieter,
I am having some problems running multiple instances of a sked at the same time. I have posted to the BizTalkers forum, and it has been suggested that you may be able to offer some assistance as BizTalk Utilities instantiates skeds in the same way that I am trying to.
An overview:
I am having problems running multiple instances of BizTalk skeds simultaneously.
I have created a very simple test application that runs a sked using something along the lines of:
set oSked = CreateObject("sked://test.skx")
sleep(2000) '2 second delay
set oSked2 = CreateObject("sked://test2.skx")
As I understand it, by instantiating skeds this way all channels and ports are skipped.
All that these skeds do is use a VB dll, which writes output into a directory, delays for 5 seconds and then continues writing to the directory, hence identifying the order that the skeds run in.
The output in the directory that I get is in the order:
sked1_beforewait.txt
sked1_afterwait.txt
sked2_beforewait.txt
sked2_afterwait.txt
It appears that even though both skeds are being instantiated 2 seconds apart, the first sked completely finishes running before the second sked starts, which is causing problems. The XLANG Schedule component in COM+ shows that they are being initated 2 seconds apart, but are being blocked somewhere along the way.
The two skeds are just a copy of the same thing, just with different names (and constants) to make sure there wasn't a problem with two instances of the same sked name being instantiated. They are not communicating with each other.
Originally these were picking up an XML message from the queue as the first step of the sked. I have removed this to eliminate the queues as the cause of the blocking.
The only step that the updated sked does is to call a vb dll component. This is a standard (very simple) vb dll, so it should be able to be instantiated from multiple sources simultaneously without a problem.
The BizTalk Utilities Sync adapter uses the same approach to instantiate a sked, and as such probably has the same problem.
Any ideas on how to instantiate skeds so that they run in a multithreaded manner?
Thanks,
Sonya.
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