I am troubleshooting a deadlock issue that occurred earlier. When examining the SQL trace log, I notice that at the exact time the problem starts all excessive queries have a connection type of 'CLIENT EXTRA - read-only'.
Never before was this connection type logged and I can't find any documentation on it. My best guess is that these are stored procedure calls (all related to number sequences), and that they never showed before because they don't normally pass the performance trhreshold. However, I'd like to eliminate the guesswork, so I was curious if anybody can shed some light on this mystery connection type.