One of my customers has gone live on IDS 11.5 in production. I mention this because it's one of the most demanding sites I've worked on. This isn't a "server in the corner", this is not even the heart and soul of the customer's business -- it *is* the customer's business. I can't go into detail or mention the customer's name, but it is a very high-traffic instance with a very complex infrastructure and application. Touch wood and whistle, but it's all looking good!

There were one or two problems, but nothing substantial considering the scope of the migration (which involved a major hardware upgrade as well!) Performance is better, but because there was a tin upgrade at the same time, it's hard to attribute how much of that is due to the IDS upgrade. The instance does seem to get through logical logs quicker, but this is expected behaviour.

The issues we encountered during the upgrade revolved a) around misleading error messages relating to SDS, even though we hadn't implemented SDS and b) upgrading ER.

The SDS message was a bit of a red herring, it turned out that we had an extra, blank DBSERVERALIASES in the onconfig. The message should have been for HDR, not SDS, but apart from that it was correct.

It's not clear to me what the ER issue even was, but I don't think any of us care. We got round it easily enough and the system is up and running. We'd all be drinking champagne if we weren't all exhausted.

Now all we have to do is tune it and optimise our use of it and then we can relax. :-D