Re: ye olde 1521

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
>>
>>
>>--
>>http://www.freelists.org/webpage/oracle-l
>>
>>    
>>
>
>  
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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
--
http://www.freelists.org/webpage/oracle-l

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