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  #1 (permalink)  
Old 01-17-2008, 05:07 PM
linuxquestion@yahoo.com
 
Posts: n/a
Default PERMANENTLY setting shmmax in Linux - Suse Personal Edition 8.2

Ok, I have discovered the secret.

You may have noticed my other post on this subject. But,
it's so old that I can't post to it anymore. So the
solution is here.

-------------

Big picture.

This method uses sysctl. It does not use echo commands.
You only edit a few files, and reboot. Just like in Solaris.


You need to configure -FOUR- things. NO less.

/etc/init.d/boot.sysctl is a script.

/etc/init.d/boot.d is a directory.

/etc/sysctl.conf is a parameter file.

and then you have to create a link. I used:

/etc/init.d/boot.d/S20boot.sysctl


------------
Edit the file /etc/sysctl.conf, and insert the value
for shmmax into it.

cat /etc/sysctl.conf
kernel.shmmax=2147483648


before:
cat /proc/sys/kernel/shmmax
33554432

start sysctl:
/etc/init.d/boot.sysctl start

Setting current sysctl status from /etc/sysctl.conf
kernel.shmmax = 2147483648

after:
cat /proc/sys/kernel/shmmax
2147483648

ta da!

Now, you get this to run at boot time. (He, he, he.
We'll get that server to serve ME yet, instead of the
other way around!!!!)

------------

Create the link: /etc/init.d/boot.d/S20boot.sysctl

cd /etc/init.d/boot.d

total 8
drwxr-xr-x 2 root root 4096 Oct 19 19:20 .
drwxr-xr-x 11 root root 4096 Dec 17 21:39 ..
lrwxrwxrwx 1 root root 12 Oct 19 19:20 S01boot.proc
-> ../boot.proc
....
lrwxrwxrwx 1 root root 16 Oct 19 19:20
S10boot.ipconfig -> ../boot.ipconfig
lrwxrwxrwx 1 root root 12 Oct 19 19:20 S10boot.klog
-> ../boot.klog

ln -s /etc/init.d/boot.sysctl S20boot.sysctl

lrwxrwxrwx 1 root root 12 Oct 19 19:20 S10boot.klog
-> ../boot.klog
lrwxrwxrwx 1 root root 23 Dec 17 22:03 S20boot.sysctl
-> /etc/init.d/boot.sysctl

-------------

- reboot. It works!!!!!!! What a concept.

cat /proc/sys/kernel/shmmax
2147483648


------------

Later, I added more entries to /etc/sysctl.conf:

kernel.shmmax=2147483648
kernel.shmmni=4096
kernel.shmall=2097152
kernel.sem="250 32000 100 128"
kernel.hostname=white
fs.file-max=65536


reboot.

cat /proc/sys/kernel/shmmax
2147483648

cat /proc/sys/kernel/shmmni
4096

cat shmall
2097152

cat sem
250 32000 100 128


---------

So, it only took a month and a week to configure the
memory at boot time. I think that what caused problems
for me was that so much of the instructions that I found
either assumed a knowledge that I didn't have yet, or missed
one of the pieces or steps. Does not compute.


So, for those of you struggling with such simple
business, I hope this helps you. Please post your
solutions when you figure them out.
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  #2 (permalink)  
Old 01-17-2008, 05:07 PM
fxysta@yteujf.com
 
Posts: n/a
Default Re: PERMANENTLY setting shmmax in Linux - Suse Personal Edition 8.2

|Create the link: /etc/init.d/boot.d/S20boot.sysctl
|
|cd /etc/init.d/boot.d
|
|total 8
|drwxr-xr-x 2 root root 4096 Oct 19 19:20 .
|drwxr-xr-x 11 root root 4096 Dec 17 21:39 ..
|lrwxrwxrwx 1 root root 12 Oct 19 19:20 S01boot.proc
|-> ../boot.proc
|...
|lrwxrwxrwx 1 root root 16 Oct 19 19:20
|S10boot.ipconfig -> ../boot.ipconfig
|lrwxrwxrwx 1 root root 12 Oct 19 19:20 S10boot.klog
|-> ../boot.klog
|
|ln -s /etc/init.d/boot.sysctl S20boot.sysctl
|
|lrwxrwxrwx 1 root root 12 Oct 19 19:20 S10boot.klog
|-> ../boot.klog
|lrwxrwxrwx 1 root root 23 Dec 17 22:03 S20boot.sysctl
|-> /etc/init.d/boot.sysctl

Good for you, but don't do it this way on SUSE. The symlink will get
wiped out from the boot.d directory the next time you run SuSEconfig
which is basically anytime after a new package has been installed or YOU
has updated packages. The reason is SUSE recomputes the dependencies
between init scripts when reconfigured and assign the sequence number
using this information, which is why you'll see they are squashed
towards zero instead of being all over the place between 0 and 99.
Instead, look at /etc/init.d/skel and make your init script have those
metadata lines. Then use chkconfig or /sbin/insserv to install that
script.
--

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  #3 (permalink)  
Old 01-17-2008, 05:07 PM
Harald Maier
 
Posts: n/a
Default Re: PERMANENTLY setting shmmax in Linux - Suse Personal Edition 8.2

linuxquestion@yahoo.com writes:

> Ok, I have discovered the secret.
>
> You may have noticed my other post on this subject. But,
> it's so old that I can't post to it anymore. So the
> solution is here.
>
> -------------
>
> Big picture.
>
> This method uses sysctl. It does not use echo commands.
> You only edit a few files, and reboot. Just like in Solaris.
>
>
> You need to configure -FOUR- things. NO less.
>
> /etc/init.d/boot.sysctl is a script.
>
> /etc/init.d/boot.d is a directory.
>
> /etc/sysctl.conf is a parameter file.
>
> and then you have to create a link. I used:
>
> /etc/init.d/boot.d/S20boot.sysctl
> ...
> ---------
>
> So, it only took a month and a week to configure the
> memory at boot time. I think that what caused problems
> for me was that so much of the instructions that I found
> either assumed a knowledge that I didn't have yet, or missed
> one of the pieces or steps. Does not compute.
>
>
> So, for those of you struggling with such simple
> business, I hope this helps you. Please post your
> solutions when you figure them out.


Maybe I am missing something. But it looks that you are talking about
Oracle on a SuSE GNU/Linux distribution and then the best solution
would be to get the orarun.rpm package from the following side:

http://www.suse.de/de/business/certi...cle/index.html

The orarun.rpm package performs the setting of the kernel parameter
among other things that you described in your message.

Harald
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  #4 (permalink)  
Old 01-17-2008, 05:07 PM
baskitcaise
 
Posts: n/a
Default Re: PERMANENTLY setting shmmax in Linux - Suse Personal Edition 8.2

linuxquestion@yahoo.com wrote:
>
> So, it only took a month and a week to configure the
> memory at boot time. I think that what caused problems
> for me was that so much of the instructions that I found
> either assumed a knowledge that I didn't have yet, or missed
> one of the pieces or steps. Does not compute.
>
>
> So, for those of you struggling with such simple
> business, I hope this helps you. Please post your
> solutions when you figure them out.


Have you had a look at powertweak that comes with Suse, there is a setting in
there to adjust the shmmax for oracle, this will adjust it on boot
automagically.

--
Mark
Twixt hill and high water.
N.Wales, UK.
Email is spam trap try baskitcaise at gmx dot co dot uk
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  #5 (permalink)  
Old 01-17-2008, 05:09 PM
linuxquestion@yahoo.com
 
Posts: n/a
Default Re: PERMANENTLY setting shmmax in Linux - Suse Personal Edition 8.2

HI,

Thanks for your responses.

Yes, I was trying to configure Suse for Oracle. And yes, I did
try the orarun package. It didn't work either. It assumed that you
had already installed oracle and had a number of instances ready
to start up at boot time. Duh. Unfortunately, dbca did not work
because shmmax was not configured. Thus the question. I could
have just hacked it, but ...

Call me old fashioned. But I like to keep the OS, and the apps
separate. Config the OS first. Prepare the machine for Oracle,
memory, environment variables, file systems, etc. Then install.

And I do expect the fundamentals to work at the OS level. You
shouldn't have to install oracle in order to get the memory
configured. That's like Mr. Gates fudging the OS to get MS Office
products working.

My lamentations. Thanks again.

My first post via linux!

--------------------

linuxquestion@yahoo.com wrote in message news:<672ceaed.0312172050.69a3125b@posting.google. com>...
> Ok, I have discovered the secret.
>
> You may have noticed my other post on this subject. But,
> it's so old that I can't post to it anymore. So the
> solution is here.
>
> -------------
>
> Big picture.
>
> This method uses sysctl. It does not use echo commands.
> You only edit a few files, and reboot. Just like in Solaris.
>
>
> You need to configure -FOUR- things. NO less.
>
> /etc/init.d/boot.sysctl is a script.
>
> /etc/init.d/boot.d is a directory.
>
> /etc/sysctl.conf is a parameter file.
>
> and then you have to create a link. I used:
>
> /etc/init.d/boot.d/S20boot.sysctl
>
>
> ------------
> Edit the file /etc/sysctl.conf, and insert the value
> for shmmax into it.
>
> cat /etc/sysctl.conf
> kernel.shmmax=2147483648
>
>
> before:
> cat /proc/sys/kernel/shmmax
> 33554432
>
> start sysctl:
> /etc/init.d/boot.sysctl start
>
> Setting current sysctl status from /etc/sysctl.conf
> kernel.shmmax = 2147483648
>
> after:
> cat /proc/sys/kernel/shmmax
> 2147483648
>
> ta da!
>
> Now, you get this to run at boot time. (He, he, he.
> We'll get that server to serve ME yet, instead of the
> other way around!!!!)
>
> ------------
>
> Create the link: /etc/init.d/boot.d/S20boot.sysctl
>
> cd /etc/init.d/boot.d
>
> total 8
> drwxr-xr-x 2 root root 4096 Oct 19 19:20 .
> drwxr-xr-x 11 root root 4096 Dec 17 21:39 ..
> lrwxrwxrwx 1 root root 12 Oct 19 19:20 S01boot.proc
> -> ../boot.proc
> ...
> lrwxrwxrwx 1 root root 16 Oct 19 19:20
> S10boot.ipconfig -> ../boot.ipconfig
> lrwxrwxrwx 1 root root 12 Oct 19 19:20 S10boot.klog
> -> ../boot.klog
>
> ln -s /etc/init.d/boot.sysctl S20boot.sysctl
>
> lrwxrwxrwx 1 root root 12 Oct 19 19:20 S10boot.klog
> -> ../boot.klog
> lrwxrwxrwx 1 root root 23 Dec 17 22:03 S20boot.sysctl
> -> /etc/init.d/boot.sysctl
>
> -------------
>
> - reboot. It works!!!!!!! What a concept.
>
> cat /proc/sys/kernel/shmmax
> 2147483648
>
>
> ------------
>
> Later, I added more entries to /etc/sysctl.conf:
>
> kernel.shmmax=2147483648
> kernel.shmmni=4096
> kernel.shmall=2097152
> kernel.sem="250 32000 100 128"
> kernel.hostname=white
> fs.file-max=65536
>
>
> reboot.
>
> cat /proc/sys/kernel/shmmax
> 2147483648
>
> cat /proc/sys/kernel/shmmni
> 4096
>
> cat shmall
> 2097152
>
> cat sem
> 250 32000 100 128
>
>
> ---------
>
> So, it only took a month and a week to configure the
> memory at boot time. I think that what caused problems
> for me was that so much of the instructions that I found
> either assumed a knowledge that I didn't have yet, or missed
> one of the pieces or steps. Does not compute.
>
>
> So, for those of you struggling with such simple
> business, I hope this helps you. Please post your
> solutions when you figure them out.

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  #6 (permalink)  
Old 01-17-2008, 05:10 PM
baskitcaise
 
Posts: n/a
Default Re: PERMANENTLY setting shmmax in Linux - Suse Personal Edition 8.2

linuxquestion@yahoo.com wrote:

But did you try the options for shmmax in powertweak ( in yast ), that is what
it is there for, there is a setting for oracle.

--
Mark
Twixt hill and high water.
N.Wales, UK.
Email is spam trap try baskitcaise at gmx dot co dot uk
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