What is the relationship between /usr/tmp on the DB tier and $APPLPTMP on the App tier?
I'm an Apps DBA of a few years now, but I haven't found any clear documentation explaining the relationship between /usr/tmp on the DB tier and $APPLPTMP (set to "/usr/tmp") on the App tier. My Concurrent Managers reside on the Application tier. I see that some concurrent requests write temporary files into /usr/tmp on the DB tier -- how do these files get transferred back to the App tier? What's the best way to purge /usr/tmp on either tier?
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