> 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: ban...@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.


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