Concurrent loads - Performance Issue

[jreddy]

Hi,
Have a weird issue. We have one DW load that runs a set of server jobs that runs couple times of day (total run time is only 11 min) and another load that runs tons of parallel jobs (total run time is about an hour and processes lot of data).
Normally when submitted by itself, both loads perform fine. But when i have the parallel load running and suddenly the server load kicks in, almost always the server load completes fine, but the parallel load kind of goes into a pause-waiting mode and status of jobs show 'Running', but there is no DB activity and nothing running on the server.

Any clues as to where to start looking? MFILES is set at 200, but i wonder if that is what the issue is about.

Thanks

[ray.wurlod]

Anything locked on the DB server? Are both sets of jobs writing to the same table(s)?

[jreddy]

No, these loads don't write to the same DB at all - totally different DB's