RE: Database broken after using pgadmin 'backup' on OSX

By no means an expert but I see:

* An environment installed using 'brew'
* Some virt_env
* A mish-mash of libraries from different lib directories in the error

I know this sounds ridiculous, but I wonder if the OP performed the task
until such time they got the error. And then rebooted (or at least
logged out and logged in - i.e. clear their library paths, library cache
and so forth which is best guaranteed by a reboot but at least logging
out and maybe starting a new terminal).

I'd hedge a bet there's more than one `plgpsql.so` on the system and
they're subtly incompatible with each other.

DSL

> -----Original Message-----
> From: Dave Page [mailto:dpage(at)pgadmin(dot)org]
> Sent: Thursday, 29 June 2017 5:20 PM
> To: Conor McNally <theconor(at)gmail(dot)com>
> Cc: pgadmin-support(at)lists(dot)postgresql(dot)org
> Subject: Re: Database broken after using pgadmin 'backup' on OSX
>
>
>
> > On 29 Jun 2017, at 21:06, Conor McNally <theconor(at)gmail(dot)com>
> wrote:
> >
> > Hi,
> >
> > Can anyone help with the following problem?
> >
> > Since upgrading to pgAdmin 4 v1.5 on macOS Sierra (v10.12.5), it
seems
> my database is 'broken' every time I use the pgAdmin 'Backup' tool.
> >
> > Here's what happens:
> > * macOS Sierra v10.12.5
> > * postgres 9.6.2 locally installed with brew
> > * pgAdmin 4 v1.5 installed directly from website
> > * database is running fine
> > * use the pgAdmin Tools / Backup... utility to take a full back-up
> > * database is no longer working
> >
> > By 'no longer working' it means that the postrges libraries have
been
> messed up and I get the following error when I try to connect via
> pyscopg2 (python v3.5.2_3, pyscopg2 v2.6.2):
> >
> > File "/Users/conor/virt_env/conor/lib/python3.5/site-
> packages/psycopg2/extras.py", line 288, in execute
> > return super(NamedTupleCursor, self).execute(query, vars)
> > psycopg2.InternalError: could not load library
> "/usr/local/lib/postgresql/plpgsql.so":
> dlopen(/usr/local/lib/postgresql/plpgsql.so, 10): Symbol not found:
> _DatumIsReadWriteExpandedObject
> > Referenced from: /usr/local/lib/postgresql/plpgsql.so
> > Expected in: /usr/local/opt/postgresql/bin/postgres
> > in /usr/local/lib/postgresql/plpgsql.so
> >
> >
> > I find the only way to fix the problem is to run "brew switch
postgresql
> 9.6.2". I don't really know what that command does but the database
> connections are OK after I run it. Also, the database backup file has
been
> created successfully as far as I can tell: I have not yet attempted to
> restore it. One other thing is I don't get a confirmation message in
the
> pgAdmin console the way I used to.
> >
> > Can anybody help with the above problem? It has only started
> happening since I upgraded to pgAdmin 4 v1.5. Before that (with
> pgAdmin 4 v1.4) everything was fine.
>
> pgAdmin uses it's own private virtual environment (including libpq and
> friends). I honestly don't see how it could affect the system Python,
let
> alone a virtual envy from a completely different version.