Обсуждение: [Fwd: Re: pgaccess connection problems]

-------- Original Message --------
Subject: Re: pgaccess connection problems
Date: Tue, 29 Jan 2002 11:34:59 -0800
From: Rabin Nathan <rnathan@telus.net>
Reply-To: rnathan_tg@bigfoot.com
To: pgsql-novice@postgresql.org



Hi,
I am a novice user hence the novice question. I am able to connect to to
the Postmaster using 'psql' while in console mode and in an xterm
window. However when I try to connect using 'pgaccess' from the same
xterm window or when starting up the program from a window manager I get
a 'connection failed message'  followed by the much quoted - 'is the
postmaster running on the local host, started with the 'i' option and
listening on port 5432.'  During all this the user name remained the
same and the Postmaster was running in the background.   I  am running
Linux and the kernel version is 2.4.8.

I am not connected via a network hence I don't see the need for the 'i'
option. I have tried it and it causes problems with 'psql..'  All
connections are made to the local host.

There is not much documentation on 'pgaccess' other than the man page.
Any insight into the problem would be greatly appreciated.

Rabin

Rabin,

> I am a novice user hence the novice question.

Welcome to the novice list, then.

>I am able to connect to
>  to the Postmaster using 'psql' while in console mode and in an xterm
>  window. However when I try to connect using 'pgaccess' from the same
>  xterm window or when starting up the program from a window manager I
>  get a 'connection failed message'  followed by the much quoted - 'is
>  the postmaster running on the local host, started with the 'i'
>  option and listening on port 5432.'  During all this the user name
>  remained the same and the Postmaster was running in the background.
>    I  am running Linux and the kernel version is 2.4.8.
> I am not connected via a network hence I don't see the need for the
>  'i' option.

All programs that need to connect to Postgres except for the postgres
 utilities must use the TCP/IP interface to connect.  Thus, while psql
 and pg_dump will work without "-i", pgaccess and pgadmin will not.
  Nor will you be able to access Postgres from, for example, a web
 server on the same machine.

>I have tried it and it causes problems with 'psql..'
>   All connections are made to the local host.

Running postmaster "-i" should not cause problems with psql.  This is
 how postmaster is usually run.

> There is not much documentation on 'pgaccess' other than the man
>  page. Any insight into the problem would be greatly appreciated.

No.  In fact, the PGAccess project has pretty much stalled (for the
 last year) due to lack of interest from the Postgres community.  IF
 anyone on this list wants to do some TCL programming, or raise money
 for the same, contact Constantin Theodescu (sp?) about working on
 PGAccess.

-Josh


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"Josh Berkus" <josh@agliodbs.com> writes:
> All programs that need to connect to Postgres except for the postgres
>  utilities must use the TCP/IP interface to connect.  Thus, while psql
>  and pg_dump will work without "-i", pgaccess and pgadmin will not.

Not sure that that's 100% true.  If you tell any of these programs to
connect to host "localhost", they will certainly go via TCP --- and
hence fail if the postmaster hasn't got -i.  But on at least some of
the GUI interfaces, putting an empty entry in the "host" dialog box
will result in a Unix-socket connection not a TCP connection to
localhost.  (The Unix-socket method is what psql and pgdump use by
default.)  For that, you don't need -i.

Dunno if that applies to pgaccess, but try it.

            regards, tom lane

On Tue, 2002-01-29 at 23:57, Tom Lane wrote:
> Not sure that that's 100% true.  If you tell any of these programs to
> connect to host "localhost", they will certainly go via TCP --- and
> hence fail if the postmaster hasn't got -i.  But on at least some of
> the GUI interfaces, putting an empty entry in the "host" dialog box
> will result in a Unix-socket connection not a TCP connection to
> localhost.  (The Unix-socket method is what psql and pgdump use by
> default.)  For that, you don't need -i.
>
> Dunno if that applies to pgaccess, but try it.

It does.

--
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