Re: memory related problems

unfortunately I was wrong. It worked once for some reason, but after reboot still the same.
I've set memlock limits also for grid user and vm.hugetlb_shm_group for group dba - no results.

any other ideas ?



________________________________
From: Helter Skelter <helter.skelterr_at_yahoo.com>
To: Gil Cota <gil.cota_at_netcabo.pt>
Cc: oracle-l <oracle-l_at_freelists.org>
Sent: Thu, February 18, 2010 12:19:52 AM
Subject: Re: memory related problems


hi,

you're right. I've just also figure it out after reading some papers on metalink.
thanks




________________________________
From: Gil Cota <gil.cota_at_netcabo.pt>
To: helter.skelterr_at_yahoo.com
Cc: oracle-l <oracle-l_at_freelists.org>
Sent: Thu, February 18, 2010 12:14:09 AM
Subject: RE: memory related problems

 
Hi
Helter,
That’s
because srvctl it routes commands through the root user , using sudo, as the
root user does not have the HugePages configured, 
that’s
why you are getting the swapping and stuff.
I
got something similar but with the ulimits stuff , that my SO Admin limited the
ulimit of root user, so every command with the srvctl didn’t work.
 
Just
a test, try to configure the HugePages in the root user as well.
 
--limits.conf
oracle        
      hard    memlock  25176064
oracle        
      soft    memlock  25176064
root          
    hard    memlock  25176064
root          
    soft    memlock  25176064
 
 
 
I
hope this will help,
Cheers
Gil
 
From:oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Helter Skelter
Sent: quarta-feira, 17 de Fevereiro de 2010 21:29
To: helter.skelterr_at_yahoo.com
Cc: oracle-l
Subject: Re: memory related problems
 
sorry, I forget...
oracle 10.2.0.4
grid 11gR2
rhel5 x64
 
cheers
 

________________________________
 
From:Helter Skelter
<helter.skelterr_at_yahoo.com>
To: oracle-l <oracle-l_at_freelists.org>
Sent: Wed, February 17, 2010 10:26:30 PM
Subject: memory related problems
Hi,
 
I've got some strange memory related problems on my test
environment.
Here is my configuration:
 
System memory          32GB
 
--oracle
sga_max_size  24G
sga_target       24G
pre_page_sga  TRUE
pga_aggregate_target4G
 
--sysctl.conf
kernel.shmmax = 25316935680
kernel.shmall = 12361785
vm.nr_hugepages = 12293
 
--limits.conf
oracle               hard
   memlock  25176064
oracle               soft
   memlock  25176064
 
I've started oracle from sqlplus - everything works as
expected:
 
             total       used  
    free     shared    buffers    
cached
Mem:         32192    
 26620       5571          0
        23        722
Swap:        20191      
   0      20191
 
HugePages_Total: 12293
HugePages_Free:      4
HugePages_Rsvd:      0
Hugepagesize:     2048 kB
 
Then, oracle autostart disabled ->reboot of
server->sqlplus ->startup -> OK :)
 
But...I've enabled autostart (srvctl), restarted server and
then problems appears - a lot of swapping, high server load, oracle processes
psp, mman, lmon at 70-80% cpu and in the end:
Process MMAN died, see its trace file
USER: terminating instance due to error 443
 
after that I can with no problems start database with
sqlplus, but when I stop it again and try start it with srvctl - the
same...swappping, high load etc...
 
any ideas where is the problem ?
 
thanks


      

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