On 2002.08.14 07:48 Vladimir Barac wrote:
> Hello to everyone!
> 
> In order to duplicate archived logs to other machine, I have to add new 
>log_archive_dest parameter, which points to NFS mount point. No, I can't avoid that...
> 
> I would like to hear bad stories, good stories, rants, recomendations, 
>tricks'n'tips... about nfs combined with oracle.
> 
> NFS uses UDP protocol, which is stateless (or it was stateless when I learnt about 
>it). Is there any way to make NFS to use TCP protocol?
> 
> Sun Solaris, Oracle 8i EE.
> 
> Remote file systemis on Linux.
> 
> 

Having archives go to an NFS mounted directory, where backup server is, is a 
standard trick and nothing particularly risky. A decent backup server is still a better
solution. The problem is the fact that the NFS server can, quite unpredictably, go
offline and then, your database is stuck.
The solution is to use log_archive_dest_n parameter in conjunction with  
log_archive_dest_state_n
parameter which a) defines state, so you can take care of the offline destinations and
b) uses Oracle*Net, so that you can send archives to another node without the NFS.

Cajoling NFS into using TCP is, allegedly, possible, but I've never seen it done.
I even tried it unsuccessfully on 2 SUN E450 machines after reading the NFS3 
specification
document, but it wouldn't work. I suspect that about the only thing you can do is to
re-write NFS yourself.

-- 
Mladen Gogala
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Mladen Gogala
  INET: [EMAIL PROTECTED]

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