> I rmeember you can just exist the shell and log on again to apply the changes. Not really a reboot. > > You can check it with ulimit -a for the list items of the changes. Yes logout and login again helps - but only your shell environment. Every process/daemon/database has its own (unchanged) environment. So you have to restart also the database processes, to force a new setup for the environment variables. If you want to be really save, a reboot will be the best. > > ------------ > Banyan He > Blog: http://www.rootong.com > Email: banyan at rootong.com > > On 3/21/2013 2:52 AM, mcclnx mcc wrote: > > We have CEntos 5.5 on DELL server. Due to more and more databases run on same server sometime processes number read max and cause > 'resource temporary unavailable". > > > > I plan to change /etc/security/limits.conf value: > > > > oracle soft nproc 2047 ==> 4096 > > > > Do i need reboot to make it effect? > > > > How to test change is effect? > > > > Thanks.