Re: plpgsql.so undefined symbol error in pg_upgrade check

Tom I do have two lib directories and and two bin directories but you were
right
in that I was trying to load a 9.2 library into a 9.4 server. I had a
symlink pointing
to the 9.2 binaries. Once I killed the symlink and recreated it pointing
to the 9.4 binaries the problem went away. Thanks for the insight.

On Thu, Aug 18, 2016 at 4:09 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:

> Mark Steben <mark(dot)steben(at)drivedominion(dot)com> writes:
> > I am planning a 9.,2 to 9.4 upgrade using pg_upgrade with the link
> option.
> > Thanks first to Tom Lane for the prompt answer last week. I have
> installed
> > 9.4 in the same disk as 9.2 and running pg_upgrade with the --check
> option
> > I get this error:
>
> > ERROR: could not load library
> > "/usr/local/pgsql_production/lib/plpgsql.so":
> > /usr/local/pgsql_production/lib/plpgsql.so: undefined symbol: errcontext
>
> This would seem to indicate that you are trying to load a 9.2 library into
> the 9.4 server or vice versa. You really need to have different lib
> directories, as well as different bin directories, for the two versions.
>
> regards, tom lane
>

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