Home -> Mailing Lists -> Oracle-L -> Re: Linux LowMem errors

Re: Linux LowMem errors

From: Tim Gorman <tim_at_evdbt.com>
Date: Sun, 10 Feb 2008 08:59:44 -0700
Message-ID: <47AF1F70.6010602@evdbt.com> 




  
  


MTU of 32768 sounds interesting -- usually it is set to 1500,
occasionally 9000.  Not sure if this is significant, and I could be
misinterpreting "requirement" for "setting" or some such, but I thought
worth noting...







Niall Litchfield wrote:


  
We've recently updated some of our RH database servers to kernel
2.4.21-53ELHugemem and have experienced problems with the databases and
ASM instances crashing and huge numbers (like 80,000) yesterday on one
box of core dumps. The crashes did not occur immediately after the
kernel update, but that is AFAIK the only significant recent change.
The head of the trace reads

  
 

  
  
SKGXPVFYMMTU: Could not create context which satisfies the minimum
  

  
MTU requirement of 32768 bytes

  
kgefec: fatal error 0

  
*** 2008-02-09 07:29:39.767

  
ksedmp: internal or fatal error

  
ORA-00603: ORACLE server session terminated by fatal error

  
ORA-27504: IPC error creating OSD context

  
ORA-27300: OS system dependent operation:sendmsg failed with
status: 12

  
ORA-27301: OS failure message: Cannot allocate memory

  
ORA-27302: failure occurred at: sskgxpsnd1

  
  


which looks significantly like the issue addressed in Note 419871.1.
  to me. Has anyone else come across these issues? 

-- 

Niall Litchfield

Oracle DBA

  http://www.orawin.info
  





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Received on Sun Feb 10 2008 - 09:59:44 CST












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