Can't create instance

I'm trying to learn how to use Oracle v7.2.3 on an HP-UX machine. Naturally, the documentation has been lost along with the people who once knew something about this system, so I can't RTFM. The main problem I've run in to is that I can get two instances up and running, but not a third. When I use the Oracle Server Manager (svrmgrl) to attempt to create a third instance (by doing a "startup nomount"), I get the following error message:

ORA-07279: spcre: semget error, unable to get first semaphore set. HP-UX Error: 28: No space left on device Additional information: 1

The ORA-07279 error is specific to the HP-UX version of Oracle, so I don't have access to any docs. that will tell me more about it. I suspect that the HP-UX error 28 is a red herring - the system has several gigabytes of free space. If I shutdown one of the two running instances, then I can start the one that failed the first time, which indicates to me that the problem is some sort of limit on the number of instances.

Any suggestions or ideas would be greatly appreciated.

TIA, Gregg Sporar
i2 Technologies Received on Wed Nov 12 1997 - 00:00:00 CST