Problems with dbi:Oracle

Hello,

I have installed the Oracle instandclient under openSUSE and this part works fine:


sqlplus abc/xyz@TAH_HU

SQL*Plus: Release 10.2.0.4.0 - Production on Mon Jan 21 10:58:04 2013

Copyright (c) 1982, 2007, Oracle.  All Rights Reserved.


Connected to:
Oracle Database 11g Release 11.2.0.1.0 - 64bit Production

SQL>


When I list all drivers and data sources with “DBI->available_drivers()” and “DBI->data_sources( $driver )” everything looks fine, too.
…
Driver: ODBC 
Driver: Oracle 
Data Source is dbi:Oracle:TAH_HU 
Data Source is dbi:Oracle:TAH_MS 
Data Source is dbi:Oracle:TAH_NO 
Data Source is dbi:Oracle:TAH_W 
Driver: Pg 
…

But when I try to connect to the Database in my perl script with:

my $dbh = DBI->connect( "dbi:Oracle:TAH_W","abc","xyz",) || die "Database connection not made: $DBI::errstr";
 
I get the following error message:


Serverfehler!
Die Anfrage kann nicht beantwortet werden, da im Server ein interner Fehler aufgetreten ist. 
Fehlermeldung: 
Premature end of script headers: test_ora.pl 
Sofern Sie dies für eine Fehlfunktion des Servers halten, informieren Sie bitte den Webmaster hierüber. 
Error 500

Has someone an idea what the problem could be? Can I find or get more detailed information about the reason why the connect does not work?

Thanx!

Regards,

Ansgar