Re: symbol lookup error: /usr/lib/9.6/bin/psql: undefined symbol: PQsetErrorContextVisibility

rob stan <aslicokay(at)gmail(dot)com> writes:
> I have a problem with connecting database via psql;/usr/lib/9.6/bin/psql:
> symbol lookup error: /usr/lib/9.6/bin/psql: undefined symbol:
> PQsetErrorContextVisibility

Apparently psql is linking to a pre-9.6 copy of libpq.so. You could
confirm that with
ldd /usr/lib/9.6/bin/psql

> I tried setting it didn't help; export
> LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib/postgresql/9.6/lib

(1) Are you sure there's a more up-to-date libpq.so there?
That path doesn't seem to square with where you say psql is.

(2) Possibly you need to put the 9.6 directory first not last.

(3) If that still doesn't work, you need to configure the system's
dynamic linker to look there. You really want to do that anyway,
as messing with LD_LIBRARY_PATH all the time is no fun.
See "man ldconfig".

regards, tom lane