Oracle Linux: No buffer space available

Have you upgraded to Oracle Linux 6.5 with UEK3 yet?  If you have, do you know if you will be encountering an issue with the OS running out of resources?  Make sure you read the details in document "Oracle Linux: ORA-27301:OS Failure Message: No Buffer Space Available" from note 2041723.1 because there are simple changes which can help you avoid this happening in the future!