Thread: PG7.4 / psqlodbc / log_duration=true & client_min_messages=log / Can't connect

Dear List,

PostgreSQL 7.4 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.3.1 (Mandrake
Linux 9.2 3.3.1-2mdk)

psqlodbc versions: 07_03_0100 & 07_03_0200

I've found a minor bug whilst using psqlodbc to connect to PostgreSQL.  I have
found that if you set in postgresql.conf:

client_min_messages=log
log_duration=true

you are unable to connect to any db using the psqlodbc driver.  Crystal
Reports for example advises 'ODBC error: Could not connect to the server;
socket is already connected'.  psql and pgadmin3 work fine, although they are
running on the same box as the server and under linux :).  Setting
client_min_messages=info and restarting PostgreSQL allows everything to work
fine again.  None of the other settings if set to true in the 'What to log'
section seem to cause any problems. Below I have pasted a typical successful
connection and an unsuccessful one as logged in syslog.


*** SUCCESSFUL CONNECTION ***

2003-12-16 20:08:19 [5579] LOG:  connection received: host=192.168.196.10
port=1143
2003-12-16 20:08:19 [5579] LOG:  connection authorized: user=postgres
database=pgbench
2003-12-16 20:08:19 [5579] LOG:  statement:
2003-12-16 20:08:19 [5579] LOG:  statement: select version()
2003-12-16 20:08:19 [5579] LOG:  statement: set DateStyle to 'ISO'
2003-12-16 20:08:19 [5579] LOG:  statement: set geqo to 'OFF'
2003-12-16 20:08:19 [5579] LOG:  statement: set extra_float_digits to 2
2003-12-16 20:08:19 [5579] LOG:  statement: select oid from pg_type where
typname='lo'
2003-12-16 20:08:19 [5579] LOG:  statement: select pg_client_encoding()
2003-12-16 20:08:19 [5579] LOG:  statement: select relname, nspname, relkind
from pg_catalog.pg_class, pg_catalog.pg_namespace where relkind in ('r', 'v')
and relname !~ '^pg_|^dd_' and pg_namespace.oid = relnamespace order by
nspname, relname


*** UNSUCCESSFUL CONNECTION ***

2003-12-16 20:10:47 [5709] LOG:  connection received: host=192.168.196.10
port=1145
2003-12-16 20:10:47 [5709] LOG:  connection authorized: user=postgres
database=pgbench
2003-12-16 20:10:47 [5709] LOG:  statement:
2003-12-16 20:10:47 [5709] LOG:  duration: 0.882 ms
2003-12-16 20:10:47 [5710] LOG:  connection received: host=192.168.196.10
port=1146
2003-12-16 20:10:47 [5710] LOG:  connection authorized: user=postgres
database=pgbench
2003-12-16 20:10:47 [5710] LOG:  statement:
2003-12-16 20:10:47 [5710] LOG:  duration: 0.856 ms

Client now complains that there is no server.



Best Regards,

Tim Knowles

tim <twknowles@uklinux.net> writes:
> I've found a minor bug whilst using psqlodbc to connect to PostgreSQL.  I have
> found that if you set in postgresql.conf:

> client_min_messages=log
> log_duration=true

> you are unable to connect to any db using the psqlodbc driver.

Hm.  This sounds like psqlodbc is unprepared to handle a NOTICE message
arriving during its startup; which if true would imply other corner-case
bugs besides this one.

I am not sure if any of the pgsql ODBC guys pay close attention to
pgsql-bugs.  If you don't get any useful help, try reposting on the
pgsql-odbc list.

            regards, tom lane