Home » RDBMS Server » Server Administration » semaphores settings in unix..please help??????????
semaphores settings in unix..please help?????????? [message #51575] Fri, 31 May 2002 06:18 Go to next message
LAKSHMI NARAYANA
Messages: 12
Registered: May 2002
Junior Member
while installing on unix,i came to know that we need to set semaphores etc. i dont know the concept of semaphores and etc... can anyone tell me what does semaphores means and how to set it. any links for the docs.
kindly do this favour........
i really appreciate the favour in advance.
regards
sruti.

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Re: semaphores settings in unix..please help?????????? [message #51576 is a reply to message #51575] Fri, 31 May 2002 06:30 Go to previous messageGo to next message
Mahesh Rajendran
Messages: 10708
Registered: March 2002
Location: oracleDocoVille
Senior Member
Account Moderator
pls refer
Oracle documentation center

add the following kernel settings to the /etc/system.

Configure Kernel Resources:

Add the following kernel parameters to the /etc/system file:

set shmsys:shminfo_shmmax=4294967295

set shmsys:shminfo_shmmin=1

set shmsys:shminfo_shmseg=10

set shmsys:shminfo_shmmni=100

set semsys:seminfo_semmns=1000

set semsys:seminfo_semmni=100

set semsys:seminfo_semmsl=250

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Re: semaphores settings in unix..please help?????????? [message #51644 is a reply to message #51575] Tue, 04 June 2002 10:32 Go to previous message
Trifon Anguelov
Messages: 514
Registered: June 2002
Senior Member
As you requested, as you should be given !!

The complete explanation of UNIX semaphores and shared memory is already posted here: http://www.dbaclick.com/cgi-bin/ib3/ikonboard.cgi?s=3cfc7bdd0237ffff;act=ST;f=14;t=377;hl=semaphores

Let me know if you have any additional questions.

Hope that helps,

Trifon Anguelov
Senior Oracle DBA

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