Found the problem. Solved. Thanks, all.

PrintError (boolean, inherited)

This attribute can be used to force errors to generate warnings (using
+ warn) in addition to returning error codes in the normal way. When s
+et ``on'', any method which results in an error occuring will cause t
+he DBI to effectively do a warn("$class $method failed: $DBI::errstr"
+) where $class is the driver class and $method is the name of the met
+hod which failed. E.g., 
  DBD::Oracle::db prepare failed: ... error text here ...
By default, DBI->connect sets PrintError ``on''.

If desired, the warnings can be caught and processed using a $SIG{__WA
+RN__} handler or modules like CGI::Carp and CGI::ErrorWrap.
[download]