Hey BOb,

>When you look at the task manager and see the CPU activity, is it in the sqlserver or sqlagent process?

Good point. Should have checked that.

Dan



>>Hello,
>>
>>I have SQL Server 2000 running on NT4. Periodically -- sometimes several times a day -- users can't connect to the server for maybe 30 minutes at a time. Nor can I connect through Enterprise Manager or Profiler from the server during that time. And when SQL Server is locked up, I can hear the HDD grinding away. The task manager shows low and consistent CPU usage.
>>
>>At other times performance seems just fine for the 10-15 concurrent users doing fairly basic, light stuff.
>>
>>The server is a Proliant 3000 with 1/2GB of RAM. Nothing else is running on the server except Agent, for which nothing is scheduled during these periods.
>>
>>I can't find anything in the logs which indicate any activity during these periods. Unfortunatly, Profiler can't connect either, so I can't trace what's going on.
>>
>>Anyone have any suggestions on what to look at or tips on how to diagnose this problem?