Re: RAC Failing after O/S patch

  • From: V R <vragunat@xxxxxxxxx>
  • To: wjwagman@xxxxxxxxxxx
  • Date: Wed, 28 Feb 2007 13:31:51 -0800 (PST)

What is the output of meminfo when you see this error? I suppose you are using 
32 bit Linux. If yes, are you open to use hugemem instead of SMP?

Have you altered the pagecache size on the OS by any chance?


Rajeev Prabhakar <rprabha01@xxxxxxxxx> wrote: Hi Bill
Assuming there are no leftover shared memory segments (ipcs) and the
 linux kernel parameters are as per 10gR1 recommendations, you can try 
 reducing the db_cache_size and see if helps ?
 On 2/28/07, William Wagman <wjwagman@xxxxxxxxxxx> wrote: Greetings,

I am running a 2 node RAC cluster on Oracle Standard Edition,
database is on ASM and CRS is also. The O/S is RHEL3. Last
week we upgraded from 2.4.21-32.0.1.Elsmp to 2.4.21-47.0.1.Elsmp and now
in one of the two instances am seeing the following errors in the
database instance (not the ASM instance) alert log and the trace files 
being generated...

Wed Feb 28 07:46:46 2007
Trace dumping is performing id=[cdmp_20070228074646]
Wed Feb 28 07:47:29 2007
Timed out trying to start process PZ99.
Wed Feb 28 07:47:29 2007
Errors in file /opt/pkg/oracle/admin/mothra/bdump/mothr1_ora_24179.trc: 
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
Wed Feb 28 07:47:30 2007
Trace dumping is performing id=[cdmp_20070228074730]

The errors are only appearing on node 1. I have searched Metalink and
the web and found references to these errors but nothing which matches 
this situation. I am still waiting to hear from the sysadmin as to
whether or not he has seen any reports of the O/S encountering memory

I would appreciate any thoughts as to what to look at or suggestions as 
to how to track down the error. So far Oracle has been unresponsive.


Bill Wagman
Univ. of California at Davis
IET Campus Data Center
(530) 754-6208


 Get your own web address.
 Have a HUGE year through Yahoo! Small Business.

Other related posts: