Assuming this is Oracle, run this code and post the results so we can see the versions of perl you have. Are your INSERTING data into a LONG datatype ?

#!/usr/bin/perl
use strict;
use DBI;
use DBD::Oracle;

print "perl $^O $^V
DBI $DBI::VERSION
DBD::Oracle $DBD::Oracle::VERSION\n";

my $dbh = dbh();
my $ar = $dbh->selectall_arrayref('SELECT * FROM V$VERSION');
print "@$_\n" for @$ar;

sub dbh {
  my $dsn      = "dbi:Oracle:host=yourHOSTNAME;sid=yourSID;port=1521";
  my $user     = 'user';
  my $password = 'password';
  my $dbh = DBI->connect($dsn,$user,$password, {
    PrintError       => 1,
    RaiseError       => 1,
    AutoCommit       => 1,
  }) or die "Canot create Databse Handle: $DBI::errstr()";
  return $dbh;
}
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