Re: ye olde 1521
- From: Henry Poras <henry@xxxxxxxxxxxxxxx>
- To: breitliw@xxxxxxxxxxxxx
- Date: Sat, 05 Feb 2005 23:37:23 -0500
Wolfgang Breitling wrote:
>I believe it very much depends on the platform and potentially some IP
>config parameters. It may also have changed over time with the advent of
>the internet and the need for firewalls. If every new connection
>requires a new - random - port # then there is a need to punch many
>holes into the firewall. I believe that at point Oracle adopted the
>option for all connections to use the same port.
>
>Henry Poras wrote:
>
>
>
>>Just wondering if one of my strongly held untested assumptions is wrong. I
>>always thought that when you connected to Oracle via the listener in
>>dedicated server mode, you would come in via the listener port (i.e. 1521,
>>1526). The listener would then validate, spawn off a shadow oracleSID process
>>using some arbitrary port, and the client would then be passed to this
>>process with the listener butting out at that point. The client would then be
>>connected to the database through that arbitrary port.
>>Last week a developer and myself checked this out. He sniffed the coming and
>>going of packets, and everything used only port 1521. I looked at netstat (I
>>think the parameters were asp (RedHat AS3 OS) but I'm not sure. That info is
>>at work but I'm not at the moment) and the only active Oracle ports were also
>>1521. Are other ports used? Is this dependent on load? I searched metalink
>>and found the question asked, but no answers were ever posted.
>>
>>Thanks.
>>
>>Henry
>>
>>
>>--
>>//www.freelists.org/webpage/oracle-l
>>
>>
>>
>
>
>
That's sort of what I was thinking, but I couldn't find it documented
anywhere and I didn't want to base action on conjecture.
Thanks.
Henry
--
//www.freelists.org/webpage/oracle-l
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