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IDS Forum

Re: IDS 11.75 Port Restrictions

Posted By: Art Kagel
Date: Tuesday, 19 November 2013, at 9:30 a.m.

In Response To: Re: IDS 11.75 Port Restrictions (CHESLEY BRION)

Chesley:

Ports above 49151 are officially "unreserved" and normally left unassigned
to be used by listeners as ephemeral ports to assign to temporary use. For
example, when you connect to Informix your session will likely be assigned
a port in or above the 49000 range for communication with its poll thread
in the engine. It may be that the listener code won't listen on a port
number above that range by design, though why the code would ignore a port
and the engine fail to start up without putting a message in the log
detailing the reason, I don't know.

Personally, I tend to use the old traditional SQL ports in the 152x range
that Ingres, Oracle, and Informix first carved out (unofficially) years ago
when I need a bunch of them at a site or the newer IANA registered Informix
ports 9088 & 9089 when I only need one or two.

All that said, I have no firm idea why you had trouble using the ports in
the 60xxx range.

Art

Art S. Kagel, Principal Consultant

Advanced DataTools (www.advancedatatools.com)
Blog: http://informix-myview.blogspot.com/

Disclaimer: Please keep in mind that my own opinions are my own opinions
and do not reflect on my employer, Advanced DataTools, the IIUG, nor any
other organization with which I am associated either explicitly,
implicitly, or by inference. Neither do those opinions reflect those of
other individuals affiliated with any entity with which I am affiliated nor
those of the entities themselves.

On Tue, Nov 19, 2013 at 9:05 AM, CHESLEY BRION <cjb16@cornell.edu> wrote:

> 1) Pardon my mis-info: We are running version 11.50.
>
> 2)The port numbers are the only thing that changed in the services file.
> From
> settings in the 1530-1535 range to 60180-60185 range.
>
> This is the question. Is there reference anywhere that states the port
> assignments are restricted for servicenames pertaining to dbservers?
> Once I changed the services file port numbers back to the 1530-1535 range,
> all
> dbservers worked fine.
>
> 3) The sqlhosts file uses the service names.
>
> 4) Yes, I bounced the instances several times.
>
> Art...Again, this is not an urgent request. I have all instances running
> fine
> with ports running in the lower port range.
>
> I want to know why this is the first time I ever ran into this problem. It
> has
> been 15 years since I started working with Informix Database products.
> I just can not figure out what would be stopping the connection due to the
> port assignment. The ports in the 60180 range are not assigned at all
>
> Thanks in advance for your responses. Please do not spend a lot of time on
> this.
>
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

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