How Kernel Parameters values calculated in 10g*

Hi to all;
*10g Orace installation on OEL*
How Kernel Parameters values calculated in 10g
kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
+# semaphores: semmsl, semmns, semopm, semmni+
kernel.sem = 250 32000 100 128
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default=262144
net.core.rmem_max=262144
net.core.wmem_default=262144
net.core.wmem_max=262144
Run the following command to change the current kernel parameters
/sbin/sysctl -p
** "/etc/security/limits.conf" **
*               soft    nproc   2047
*               hard    nproc   16384
*               soft    nofile 1024
*               hard    nofile 65536
My question I think 32 bit or 64 bit OS calculation will be same only.
I want know how it was calculated ?
Edited by: 969352 on Feb 9, 2013 7:02 AM

Hi
I suggest please review:
Relationship Between Common Init.ora Parameters and Unix, Linux Kernel Parameters [ID 144638.1]
Regard
Helios

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For those setting mention in installation guide which is already shared previous post.
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Ari Arantes (guest) wrote:
: Hi,
: I've installed Oracle on RedHat 5.2 (2.0.36) on a machine with
: 512 mb memory.
: First I've recompiled the kernel how Oracle says and basing in
: some documents (like
: http://jordan.fortwayne.com/oracle/oralinux.html). Of course
I've
: saved a copy of the old kernel. The linux was ok, the command
: ipcs -l shows the new values of the kernel parameters, but
Oracle
: didn't start. I've restored the copy of the kernel, the ipcs -
l
: shows the old values and now Oracle is running, with a SGA of
: almost 300 mb.
: Is there some problem in that? Will the machine loose
performance
: because the miminum values of the kernel parameters?
: Best regards,
: Ari
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files someplace else in the kernel specify uses for address
ranges adjacent to the above range, which I take to be the
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=====
Farther down you will see some more lines (not together)
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#define SHMID_BITS 7
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=====
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=====
Let me say a few more words about the web page you were using
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maximum shared memory segment size by using more shared memory
segments. So, if you reduce those, you are essentially shooting
yourself in the foot by taking away what you are giving with
increasing the maximum segment size.
=====
Good luck, and may this farce be with you!
null

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NAME    PRIVILEGE       VALUE    FLAG   ACTION                       RECIPIENT
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        system          2.15G     max   deny                                 -
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process: 419: -csh
NAME    PRIVILEGE       VALUE    FLAG   ACTION                       RECIPIENT
process.max-port-events
        privileged      65.5K       -   deny                                 -
        system          2.15G     max   deny                                 -
process.max-msg-messages
        privileged      64.0K       -   deny                                 -
        system          4.29G     max   deny                                 -
process.max-msg-qbytes
        privileged      64.0KB      -   deny                                 -
        system          4.00GB    max   deny                                 -
process.max-sem-ops
        privileged        512       -   deny                                 -
        system          2.15G     max   deny                                 -
...Solaris 10 has different tunables and default values from 8 and 9. It's default tunables should be good for most applications per a given system's hardware. There are some great blog articles, and discussions on opensolaris.org and blogs.sun.com on tuning that explain the intent of tuning and why we shouldn't have to tune.
Cheers,
~~sa

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