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тАО10-31-2001 07:11 AM
тАО10-31-2001 07:11 AM
I have an N-Class HP-UX 11 64-bit server with 3Gb memory. When the Oracle SGA was recently increased from <1Gb to >1Gb I received the following error message in my Oracle logs:
SVRMGR> ORA-07306:sms1sg: shmget error, unable to get a shared memory segment.
HP-UX Error: 12: Not enough space.
The Oracle instance then failed to start. What is an Error 12 or where can I look to find it out for myself.
Thanks in advance,
Anthony.
Solved! Go to Solution.
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тАО10-31-2001 07:17 AM
тАО10-31-2001 07:17 AM
Re: HPUX error 12 - Not enough space
Check in /usr/include/sys/errno.h; errno 12 is ENOMEM; you need to increase maxdsiz (maxdsiz_64bit for 64-bit apps). You also need to check shmmax.
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тАО10-31-2001 07:19 AM
тАО10-31-2001 07:19 AM
Re: HPUX error 12 - Not enough space
it is clear that the problem is with the memory but you didnt send any more that like your params or your swap config .
i will advise you to change the params :
maxdsiz
you can increase it by * 2 .
also check to see what is the state of your swap , the swap shuold be * 2 the size of the memory .
if you computer is not ! an nfs server change the dbc_max_pct to 10
and the dbc_min_pct to 5 to increase the memory usage in your computer .
if you want to read on this params check this link : http://docs.hp.com//hpux/onlinedocs/os/KCparams.OverviewAll.html
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тАО10-31-2001 07:20 AM
тАО10-31-2001 07:20 AM
Re: HPUX error 12 - Not enough space
hope this helps ..
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тАО10-31-2001 07:29 AM
тАО10-31-2001 07:29 AM
Re: HPUX error 12 - Not enough space
Error-12 points to 'maxdsiz' or swap. Don't forget to look at your swap utilization:
# swapinfo -tam
Regards!
...JRF...
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тАО10-31-2001 07:29 AM
тАО10-31-2001 07:29 AM
Re: HPUX error 12 - Not enough space
Sys 12 error:
During execution of an exec routine, a program asked for more space than the system was able to supply. The error may also occur if the arrangement of text, data, and stack segments requires too many segmentation registers, or if there is not enough swap space during execution of the fork routine.
Rgds, Robin.
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тАО10-31-2001 08:06 AM
тАО10-31-2001 08:06 AM
Re: HPUX error 12 - Not enough space
We currently have 9Gb of swap. shmmax is currently set to 17Gb. If If the memory is 3Gb and swap is 9Gb, should shmmax not be set to 12Gb?
Thanks Again,
Anthony.
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тАО10-31-2001 08:13 AM
тАО10-31-2001 08:13 AM
Re: HPUX error 12 - Not enough space
live free or die
harry
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тАО10-31-2001 08:17 AM
тАО10-31-2001 08:17 AM
Re: HPUX error 12 - Not enough space
Yoy can simply do a sysdef command. You can also go to SAM->Kernel Configuration->Configurable Parameters to see a fgew more that sysdef does not display plus some online help.
As for setting SHMMAX, it should be far less than even your 12GB; there has to be something leftover for programs, OS, data, and other such trivial things. Remember, if you have 12GB as shared memory (or even 9GB) you would be swapping like a madman. Reduce it to something like 2GB.
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тАО10-31-2001 08:22 AM
тАО10-31-2001 08:22 AM
Re: HPUX error 12 - Not enough space
maxdsiz = 67108864
maxdsiz_64bit = 1073741824
shmmax = 17179869184
Should maxdsiz_64bit be increased or maxdsiz?
Anthony