Last weekend, I learned that myUMBC (among other things) was going down every night from roughly 9:05pm till 9:20pm. I had no idea this had been happening, so the night before last I signed on around 9:00pm to see what was going on. Sure enough, at 9:05 sharp, it hung. I got stack traces from all of the myUMBC jobs, and found they were all hanging on calls to the Oracle DB. The next morning I talked to one of our DBAs. Turns out there was a backup job running during that time. The DBAs shuffled the backup jobs around, and last night there were no problems. Dunno how they fixed it, but if it works now, that's all I really care about :-) I plan on keeping an eye on things for awhile, to see if the problem turns up again, but for now I'm calling it fixed.