kernel parameters semmns, semmni and semmsl

Hi there,

I'm having problems installing Oracle 8.0.5 on Solaris 2.6 and am fairly sure it is due to the values of semmns, semmni and semmsl specified in the /etc/system file.

On a new machine I set these values as follows:

set semsys:seminfo_semmns=200
set semsys:seminfo_semmni=70
(no value specified for semmsl)

This is as per the install guide & works fine. I also have to install Oracle on another machine which already has another application running on it. The kernel parameters have already been set up for this application so I don't really want to change them. They are:

set semsys:seminfo_semmap=100
set semsys:seminfo_semmni=1000
set semsys:seminfo_semmns=4000
set semsys:seminfo_semmnu=800
set semsys:seminfo_semmsl=512
set semsys:seminfo_semume=100

As the values for semmns and semmni are much greater than I needed, I thought I would be OK, but when I try to start the database I get:

ORA-07279: spcre: semget error, unable to get first semaphore set. SVR4 Error: 28: No space left on device Additional information: 1

Any ideas? What strikes me as potentially odd is that the number of semaphores (semmns=4000) is not equal to the number of semaphore sets
(semmni=1000) times the number of semaphores per set (semmsl=512). Is
this the problem? Maybe I should add some more semaphores?

Also, and I don't know if this is related, but there is no setting for shmmin on the machine with the problems. On the one that works it is set to "1". Unfortunately I can't just resort to trial & error because every time I need to try changing these values I have to restart the machine. Since it is running another application this is a bit inconvenient.

All ideas would be most welcome.

--
Regards
Yuri McPhedran
http://www.QandA.co.uk - the IT agency guide

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Share what you know. Learn what you don't. Received on Tue Aug 24 1999 - 07:07:50 CDT