It looks like you have RaiseError set. If you set RaiseError to a false value, DBI will return on error conditions rather than dieing. You can then look at the returned value and $DBI::errstr or $dbh->errstr to figure out if it worked.

my $dbh = DBI->connect($connect_string,$user,$password,{ RaiseError=>0
+ });
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print map { my ($m)=1<<hex($_)&11?' ':'';
$m.=substr('AHJPacehklnorstu',hex($_),1) }
split //,'2fde0abe76c36c914586c';
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