Our web application (on the app server) calls a procedure on a database
server which bulk imports a file from a file share on the application server.
Kerberos Delegation is set up and working. All servers are running Windows
Server 2003 and the domain and forest funtional levels have been raised to
2003.
We are finding that whenever a TGT expires, the bulk import fails and the
services that run the application have to be restarted to refresh the TGT (to
test this we changed the TGT lifetime from the default 10 hours down to 10
minutes and then up to 72 hours - the time to bulk import failure always
follows this setting). My understanding was that the TGT should be
automatically renewed but this is clearly not happening. Why do we have this
behavious and what can we do to fix it?
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