We are attempting to retire an Oracle/SDE instance.
Our existing MXDs have had most of their data sources pointed to a new server and database with a new Oracle service name. However, some MXDs still have data sources pointing to the old server. When the old database instance is shut down, ArcMap loads much more slowly on a client machine (a document previously opening in 1 min +/- now takes 15 minutes or more to open).
I have tried commenting out the old server's entry in the client TNSNAMES.ORA file, to no avail.
Has anyone seen similar behavior? Is there any way to get ArcMap to give up in a reasonable amount of time and just display a broken layer symbol?