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From: Devrim Gündüz <devrim@gunduz.org>
To: Don Seiler <don@seiler.us>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-admin <pgsql-admin@postgresql.org>
Subject: Re: psql can't connect to old DB after installing new binaries
Date: Wed, 04 Oct 2017 22:32:55 +0100
Message-ID: <1507152775.3791.53.camel@gunduz.org> (raw)
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Hi,

On Wed, 2017-10-04 at 15:36 -0500, Don Seiler wrote:
> 
> It's pointing to the newly installed version instead of the version it the
> 9.2 lib directory. There isn't any such file under /usr/lib64. So how is it
> even aware of that /usr/pgsql-9.6 version?

There is a file under /etc/ld.so.conf.d directory, which does this magic.

> 
> Yep that sounds good for later, although can't really help me in this case.
> I guess I can set unix_socket_directory in 9.2 to use the new location but
> that requires a restart anyway, not ideal.
> 
> Would creating a symlink be a workaround? Would that cause issues with
> server restarts?
> 
> Mind that this is only to prepare for the upgrade. We aren't planning to
> run both 9.2 and 9.6, and eventually 9.2 would be removed.

What happens when you use 9.2's psql?

/usr/pgsql-9.2/bin/psql

Regards,

-- 
Devrim Gündüz
EnterpriseDB: https://www.enterprisedb.com
PostgreSQL Consultant, Red Hat Certified Engineer
Twitter: @DevrimGunduz , @DevrimGunduzTR

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