Обсуждение: Mac Address

Hi list,<br /><br />It is possible to retrieve the MAC Address of a computer using a Postgresql function like
others:<br/><br /><a
href="http://www.postgresql.org/docs/8.1/static/functions-info.html">http://www.postgresql.org/docs/8.1/static/functions-info.html
</a><br/><br />I can retrieve a ip of some statement connection but I didn't find how to get the MAC Address. Is it
possible?<br /><br /><br />Regards<br />Ezequias<br clear="all" /><br />-- <br />
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-<br
/>                                  Atenciosamente(Sincerely)<br />                        Ezequias Rodrigues da
Rocha<br/> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-<br />A pior das democracias ainda é
melhordo que a melhor das ditaduras <br />The worst of democracies is still better than the better of dictatorships<br
/><ahref="http://ezequiasrocha.blogspot.com/">http://ezequiasrocha.blogspot.com/</a> 

Ezequias Rodrigues da Rocha написа:
> Hi list,
> 
> It is possible to retrieve the MAC Address of a computer using a Postgresql
> function like others:
> 
> http://www.postgresql.org/docs/8.1/static/functions-info.html
> 
> I can retrieve a ip of some statement connection but I didn't find how to
> get the MAC Address. Is it possible ?

No - the client and the server communicate using TCP/IP as
transport/internet layer but that does not mean they use Ethernet as
network access layer.


-- 
Milen A. Radev

On Sat, Sep 02, 2006 at 17:42:29 -0300, Ezequias Rodrigues da Rocha <ezequias.rocha@gmail.com> wrote:
> Hi list,
> 
> It is possible to retrieve the MAC Address of a computer using a Postgresql
> function like others:

MAC Addresses are generally only transferred within a subnet and you aren't
going to be able to get them in the general case.

> http://www.postgresql.org/docs/8.1/static/functions-info.html
> 
> I can retrieve a ip of some statement connection but I didn't find how to
> get the MAC Address. Is it possible ?

What is it that you are really trying to accomplish? There might be some
other solution than having to get the mac address of a remote computer.

Ezequias Rodrigues da Rocha <ezequias.rocha@gmail.com> schrieb:

> Hi list,
> 
> It is possible to retrieve the MAC Address of a computer using a Postgresql
> function like others:

In the same subnet? Then you can use untrusted languages such as plperlu
or plsh to retrieve the MAC for a IP. (arp -a ip)

Btw.: please no HTML in eMails.


HTH, Andreas
-- 
Really, I'm not out to destroy Microsoft. That will just be a completely
unintentional side effect.                              (Linus Torvalds)
"If I was god, I would recompile penguin with --enable-fly."    (unknow)
Kaufbach, Saxony, Germany, Europe.              N 51.05082°, E 13.56889°

I've install postgres in linux.
but pg_dump its not working at all.
if i execute the pg_dump to the file like this

pg_dump -Upostgres -dpostgres > file.dmp

the file file.dmp is empty

and if i execute the psql with list database option, the result is error 

-bash-3.00$ psql -l
ERROR:  relation "pg_catalog.pg_user" does not exist


can any one help me


Thanx


tosa

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On Tue, Sep 05, 2006 at 02:22:29PM +0700, M. Santosa wrote:
> and if i execute the psql with list database option, the result is error 
> 
> -bash-3.00$ psql -l
> ERROR:  relation "pg_catalog.pg_user" does not exist

This looks to me like you have more than one postmaster installed,
and you've got a mismatch in versions.  Be my first guess, anyway.  

A

-- 
Andrew Sullivan  | ajs@crankycanuck.ca
Users never remark, "Wow, this software may be buggy and hard 
to use, but at least there is a lot of code underneath."    --Damien Katz

"M. Santosa" <muhamad_santosa@ag.co.id> writes:
> I've install postgres in linux.
> but pg_dump its not working at all.
> -bash-3.00$ psql -l
> ERROR:  relation "pg_catalog.pg_user" does not exist

IIRC, this is a symptom of selinux having interfered with initdb.
Get a newer copy of the selinux policy package (or turn it off
temporarily) and redo initdb.  You can find more info if you search
our archives for "selinux".
        regards, tom lane