Possible that cache memory is retained during a warm boot

Hi can anyone tell me if anything is stored in memory during a warm boot.
Specifically I have 2 servers running the same apps. I had an issue where an API was calling a stored proceedure from a database and this opened an online XML based form that users can fill-out.    After the warm boot the form would open to a blue screen on one of the servers yet not the other.  BUT after a COLD  (shutdown) boot the form started working.

I am thinking that something was stuck in memory during the warm boot but cannot fabricate my words to explain how if possible.

Looking for just a quick quip of if I am even on the right track and what that cache memory would be called.

Thanks
volman2010Asked:
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Lee_YCPCommented:
TribusCommented:
volman2010Author Commented:
Thanks guys.. The Cold boot is a Start Sutdown and Power button restates the server... Warm boot is Start restate..

I am looking for what is default kept in memory-cache during a warm boot..  

A cold boot clears out all cache.

Thanks again
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Anthony PerkinsCommented:
>>I am thinking that something was stuck in memory during the warm boot but cannot fabricate my words to explain how if possible.<<
If you are talking about SQL Server Cache than there is not the remotest chance of that happening.

>>Looking for just a quick quip of if I am even on the right track and what that cache memory would be called.<<
It depends, it could be:
The buffer or data cache.
The procedure or plan cache.
User cache.
Other cache stores.

Checking the cache is as simple as using the DMVs. For example, to see what plans are in cache you can use:
sys.dm_exec_cached_plans.

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TribusCommented:
You might also want to read about "Warm Reboot" in Section 2.2 of:

http://www.eecs.umich.edu/~pmchen/papers/chen96_1.pdf
TribusCommented:
Minor add to the above:

The ROM BIOS checks to see if this is a 'cold boot' or a 'warm boot':

To determine whether this is a "cold boot" or a "warm boot" the ROM BIOS startup routines check the value of the two bytes located at memory location "0000:0472".

Warm boot - A word value of 1234h in this location is a flag that indicates a "warm boot", which causes the memory test portion of the POST (Power-On Self-Test) to be skipped.

Cold boot - Any other word value in this location indicates a "cold boot" and then preforms a  full POST.
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