kernel: oracle: page allocation failure.

On Linux machines you may encounter errors like :

 kernel: Out of Memory: Killed process 18061 (oracle).
 kernel: oracle: page allocation failure. order:0, mode:0xd0





The problem is that there is no more memory available on server ( you could also see the pmon or smon killed ).


Solutions:
- increase memory on the server
- decrease sga ( or pga )
- http://www.cyberciti.biz/faq/linux-page-allocation-failure-erro/