On Fri, Jun 4, 2021 at 06:21:02PM -0400, rob stan wrote: > Hello all, > 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 > > OS :Debian GNU/Linux 9 > > I tried setting it didn't help; export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/ > lib/postgresql/9.6/lib > > Can anyone please help me? Uh, your binary is at /usr/lib/9.6/bin/psql but you are specifying the LD path as /usr/lib/postgresql/9.6/lib. Maybe try: LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib/9.6/lib The problem is clearly using the wrong version of the libpq libary. -- Bruce Momjian <bruce@xxxxxxxxxx> https://momjian.us EDB https://enterprisedb.com If only the physical world exists, free will is an illusion.