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.