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тАО03-09-2002 07:17 AM
тАО03-09-2002 07:17 AM
How can I do?
I think some kernel parameters are unbefitting,but I don't know what they are, help and thanks.
Some related kernel parameters' value:
maxuprc=2000
maxusers=1500
nproc=12020
rickman
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тАО03-09-2002 08:33 AM
тАО03-09-2002 08:33 AM
Re: How can I do?
What does the following say?
# oerr ora 27146
Hope this helps. Regards.
Steven Sim Kok Leong
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тАО03-09-2002 09:23 AM
тАО03-09-2002 09:23 AM
Re: How can I do?
# oerr ora 27146
27146, 0000, "post/wait initialization failed"
// *Cause: OS system call failed
// *Action: check errno and contact Oracle Support
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тАО03-09-2002 09:39 AM
тАО03-09-2002 09:39 AM
Re: How can I do?
Can you check the system table utilisation from glance?
Hope this helps. Regards.
Steven Sim Kok Leong
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тАО03-09-2002 10:31 AM
тАО03-09-2002 10:31 AM
Re: How can I do?
The system table with no oracle is as below:
S U
Proc Table(nproc) 12020 137
File Table(nfile) 22059 610
Shared Mem Table(shmmni) 200 9
Message Table(msgmni) 50 2
Semaphore Table(semmni) 128 26
File Locks(nflocks)mmni)200 22
Any suggestions?
rickman
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тАО03-09-2002 11:02 AM
тАО03-09-2002 11:02 AM
Re: How can I do?
Can you show the system table parameter values for processes=800 as defined in your init.ora?
Hope this helps. Regards.
Steven Sim Kok Leong
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тАО03-09-2002 11:32 AM
тАО03-09-2002 11:32 AM
Re: How can I do?
Proc Table(nproc) 12020 157
File Table(nfile) 22059 741
Shared Mem Table(shmmni)200 10
Message Table(msgmni) 50 2
Semaphore Table(semmni) 128 27
File Locks(nflocks)mmni)200 46
Help me!
Thank you!
rickman
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тАО03-09-2002 01:47 PM
тАО03-09-2002 01:47 PM
Re: How can I do?
nproc is exceedingly high at 12,020 so unless those Oracle processes will spawn another 10,000 processes, it is wasting kernel memory. nproc should be 5x larger than nproc but NOT until you reduce nproc.
You may be running out of swap space or semaphores or shared memory or ... Check if Oracle has an enhanced logging mode, and look at dmesg after the error as well as syslog.log.
Bill Hassell, sysadmin
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тАО03-09-2002 06:21 PM
тАО03-09-2002 06:21 PM
Re: How can I do?
Just to double-check, is the only change made to init.ora the processes assignment?
Hope this helps. Regards.
Steven Sim Kok Leong
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тАО03-10-2002 12:35 AM
тАО03-10-2002 12:35 AM
Re: How can I do?
Hello,
Quote
//*
ORA-27146 post/wait initialization failed
Increase the kernel parameter "SEMMNS".
You are running out of semaphores (semmns).
For every "processes=" in the init"SID".ora Oracle needs one semaphore (semmns). So when you try and start a second database the OS doesn't have enough semaphores for Oracle.
To set the kernel parameter for SEMMNS, use this formula . For
example, consider a system that has three Oracle instances with the PROCESSES parameter in their init sid.ora files set to the following values:
ORACLE_SID=A, PROCESSES=100
ORACLE_SID=B, PROCESSES=100
ORACLE_SID=C, PROCESSES=200
The value of SEMMNS is calculated as follows:
SEMMNS = ((A=100) + (B=100)) + ((C=200) * 2) + ((# of instances=3) * 10) = 630
*//
Thanks
G Manikandan