My Groupwise server abended into a coma last night. looking at the
logs, I get the following message:

Server logical address space is running low. Increase the available
logical space by restarting the server with the -u671252480 switch

Five minutes later I get:
Cache memory allocator out of available memory.

followed by:
Short term memory allocator is out of memory.
417714 attempts to get more memory failed.
request size in bytes 43 from Module GWPOA.NLM

My system ram reports:
Total server memory: 3,669,181 Kilobytes

Total Extended Server memory: 524,288 Kilobytes

This should be suficient under ordinary circumstance for 65 user GW
istallation, right? Should I restart the server with that switch? What
is that switch?