Sequencer clearing with DLL references

HI,
I have two VI each one of them communicate with same library (.net).
when I run each of them individual it works fine. but when i tried to run it using Test stand, 1st step (1st VI) is working but it does not pass in the second step (2nd VI).
I think the problem comes from the library, where when i tried to run 4UUTs using batch technique, only one unit is passing the test and the remainng uuts are failing.
how i can make sure the library is totally closed from the VI and/or Teststand as well.
note: the function of the vi is to communicate to the UUT using com port (4 seperate ports for each UUTs).
thanks a lot

AEC ENGINEER,
There could be a number of things going on. It could be something as simple as simply not changing the com port correctly, or we may not be closing out the device reference, or a number of other things. Could you post a simple example or some screenshots of the code so we can try to see if there is anything that looks out of place?
Regards,
Kyle Mozdzyn
Applications Engineering
National Instruments
Regards,
Kyle M.
Applications Engineering
National Instruments

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Figure 2:
Figure3:
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Figure 4:
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          try
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               log.error("wakeUp() - caught exception", t);
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          synchronized(m_lckRefMap)
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Help required with understanding References and finalizers

Background
I have an online Application which has been developed over 6 years now. It is a Website CMS and runs 300 simultaneous sites per webserver. For the first time I am experiencing capacity / performance issues. I switched from SUN Java to JROCKIT in 2006 which speeded evertything up by 200% but now I have periods of the day where The memory fills up and I get Swapping which leads to 100% cpu utilization - mainly in I/O. I have upped the RAM in the server as a solution and now I want to see if I can do anything to reduce my memory footprint.
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Hi Jonathan,
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Hi,
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Please remember to up-vote or mark the reply as answer if you find it helpful.

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