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тАО09-04-2001 08:52 AM
тАО09-04-2001 08:52 AM
ORA-07279: spcre: semget error, unable to get first semaphore set.
I had 8 oracle instance already running on my server.
Somebody knows how to solve my problem?
Thanks in advance.
Regards.
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тАО09-04-2001 09:02 AM
тАО09-04-2001 09:02 AM
Re: ORA-07279: spcre: semget error, unable to get first semaphore set.
...jcd...
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тАО09-04-2001 09:05 AM
тАО09-04-2001 09:05 AM
Re: ORA-07279: spcre: semget error, unable to get first semaphore set.
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тАО09-04-2001 09:09 AM
тАО09-04-2001 09:09 AM
Re: ORA-07279: spcre: semget error, unable to get first semaphore set.
sar -mS 1 300 will run every second for 5 minutes
Now this will help you - but the biggest and most important thing would be to take a look at all your oracle(s) ~init.ora files for the number of processes it requires. Then, as they say, do the math to set up your semms parms accordingly for all your oracle needs. Here's a thread that may help you a little..
http://forums.itrc.hp.com/cm/QuestionAnswer/1,1150,0x10ca6af52b04d5118fef0090279cd0f9,00.html
Regards,
Rita
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тАО09-04-2001 09:11 AM
тАО09-04-2001 09:11 AM
Re: ORA-07279: spcre: semget error, unable to get first semaphore set.
semmni - Systemwide semaphores and
semmns - user accessable semaphores
You need to rebuild the kernel and reboot.
Do a sar -m 1 5 and if you see sema/s less than it's limit, then you need to increase only semmns. Otherwise you need to increase both semmni and semmns.
-Sri
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тАО09-05-2001 05:00 AM
тАО09-05-2001 05:00 AM
Re: ORA-07279: spcre: semget error, unable to get first semaphore set.
For 8 oracle instances, you have to INCREASE your unix system kernel parameters :
semaem
semmap
semmni
semmns
semmnu
semume
semvmx : if needed.
Magdi
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тАО09-05-2001 03:58 PM
тАО09-05-2001 03:58 PM
Re: ORA-07279: spcre: semget error, unable to get first semaphore set.
You can also tune nflock. The Oracle Manual says
//Begin//
The kernel parameter nflocks defines the maximum number of file locks available on the system. The recommended setting for nflocks is
nflocks = 200 + sum of the values of init.ora parameter db_files for all instances of oracle on the machine.
Hope this helps
Thanks