When I run db2start on my OSX 10.7.5, I get this message:
SQL1220N The database manager failed to allocate shared memory.
Scouring the Internet, I find two solutions: Setting instance_memory to automatic and increasing ulimit. On the Mac, ulimit has a max value of 1200. I notice that db2profile is trying to set it to 65000. Since that is not going to fly, what do I do?