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8.1.2 locking issues

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We are having locking issues in 8.1.2 on HP 11.23 ia64.  I'm 
trying to better understand how to conclusively identify who is 
waiting on who and why.

We have a series of "select for updates" on our 'sessions' table.  
One of those queries is stuck waiting for a "transactionid" 
locktype ShareLock.  How can I tell what it's actually waiting 
for?

TIA.
Ed


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