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Old 09-07-2006, 01:29 AM   #1
gsr_kashyap
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buffer cache size


hi everyone,
can any one help change the buffer cache size in redhat and suse?? this error i got when i installed oracle 10g and it went well and when i try to mount the database using startup cmd it says too many buffer cache parameters (error code : ora-1034)

thnq in advance
 
Old 09-07-2006, 09:24 AM   #2
sysconfig
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May I know which kernel are you using?

also check the below URL:

http://kbase.redhat.com/faq/FAQ_79_5601.shtm

not sure but you many need to change the values in below mentioned files.

thx

Last edited by sysconfig; 09-07-2006 at 09:28 AM.
 
Old 09-08-2006, 12:50 AM   #3
gsr_kashyap
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its redhatAS kernal2.4
 
Old 09-08-2006, 09:07 AM   #4
sysconfig
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/proc/sys/vm/buffermem:

The values in this file control the amount of memory
which the kernel allocates to the buffer cache.

buffermem.min_percent is the minimum percentage of memory that should
ever be allocated to disk buffers.

buffermem.borrow_percent can indicate to the kernel that the buffer cache
should be pruned more aggressively than other system caches. This aggressive
pruning will begin when the buffer cache grows above this percentage of memory
and the system subsequently comes under memory pressure.

buffermem.max_percent is the maximum percent of memory the buffer cache
will occupy.

Check that file... and modify according to your need!

thx
 
Old 09-12-2006, 06:55 AM   #5
gsr_kashyap
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hey i dont find any file containing buffermem.min_percent or any thing of that sort. do u have any idea how the samething is done in suse??
 
Old 09-18-2006, 01:59 AM   #6
sysconfig
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I think you may need to check this on Redhat Knowledge base you may find some solution on it.

Thanks,
 
Old 09-18-2006, 02:15 AM   #7
gsr_kashyap
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thnx a ton but there r no issues on it

Last edited by gsr_kashyap; 11-27-2006 at 07:44 AM.
 
  


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