Thank you Corion for pointing me in the right direction. I have finally solved the problem which was a combination of lack of PostgreSQL ODBC driver and improper format of connection string.

Solution

Remark: I recommend using DBD::ODBC to connect to PostgreSQL on Windows instead of DBD::PgPP (unmaintained and full of bugs, written in Pure Perl) or DBD::Pg (no Windows version on ppm & latest update on http://pgfoundry.org/frs/?group_id=1000199&release_id=1212 is for Perl 5.10 made in late 2008).
1. Install latest version of DBI & DBD-ODBC using ppm.
2. Download & install appropriate psqlodbc driver from http://www.postgresql.org/ftp/odbc/versions/msi/ (don't forget to upgrade using the batch file).
3. Go to Control Panel -> Administrative Tools. Choose Data Sources shortcut. In the ODBC Data Source Administrator dialog box, click Add, then select the driver (e.g.: PostgreSQL Unicode) you want from the Installed ODBC Drivers list and choose OK.
4. Use the appropriate connection string (http://connectionstrings.com/postgre-sql#p51), e.g.:

my $dbh = DBI->connect("dbi:ODBC:driver={PostgreSQL Unicode};Server=12
+7.0.0.1;Port=5432;Database=database;Uid=username;Pwd=password;", user
+name, password, {PrintError => 1, RaiseError => 1}) || die "Error $DB
+I::err [$DBI::errstr]";

[download]
5. Using telepathy, thank the person who compiled this little manual for you so that you don't have to go through the cycle of frustration, disillusionment and apathy.

In reply to Re: Cannot connect Perl to PostgreSQL using ODBC (SQL-IM002) by lr3p
in thread Cannot connect Perl to PostgreSQL using ODBC (SQL-IM002) by lr3p

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