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'Linux-x86_64 Error: 28: No space left on device' While trying to start the database -- Error

SQL> startup mount pfile='/tmp/initdlfasp12.ora'
ORA-27102: out of memory
Linux-x86_64 Error: 28: No space left on device


This as you can see is on Linux x86 with 64 bit processor. We got this error after we changed SGA on 10gR2 database. So was sure that this is something to do with the OS.

Parameters to check for this are shmall.

shmall is the total amount of shared memory, in pages, that the system can use at one time.

$cat /proc/sys/kernel/shmmax
53687091200

$ getconf PAGE_SIZE
4096

As per Oracle SHMALL should be set to the total amount of physical RAM divided by page size.

Our system has 64GB memory, so change kernel.shmall = 1024 * 1024 * 1024 * 64 / 4096 = 16777216


Once this value is calculated you can modify Linux system configuration file directly.

$ su - root
vi /etc/sysctl.conf file:
kernel.shmall=16777216

and

# sysctl -p

Once this is done the database was started without any problem.

Comments

Wesley_silvva said…
thank you! saved my life
banu sankaram said…
It worked. thanks a lot :)
kfida said…
you can show me by video im so understand you/
please.
my mail: kfirdabush@gmail.com
Tauqir Azam said…
Thanks...its working
Madhuri Sarode said…
Thanks so much , its helped me lot :)
Worked!!!!! Thx a lot
Mohan Deo said…
It worked very well.
Thanks a lot.
Unknown said…
Thanks so muche!!!
Irene Hynes said…
Hi There,


Nice to be visiting your blog again, it has been months for me. Well this article that i’ve been waited for so long.

I am trying to browse my tabular model using SSMS Tabular model Browse option wherein I am pulling up measures on measure panel and dimension attributes on rows and filtering data using SLICERS however when I am executing that, it is taking time almost 1 min and when I wrote Summarize DAX for the combination, it executed in less time around 15 sec.....Is this is expected behavior and why it is so big difference.
It was cool to see your article pop up in my google search for the process yesterday. Great Guide.
Keep up the good work!


Thank you,
Irene Hynes

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