I have a simple form to retrieve some data. The form is a single field 's_off_no' and query the database something like
select * from table where fieldA = s_off_no;
Problem is it works only once, and after that, the form doesn't seems to be passing the data over or maybe its the DBI that doesn't take in new values.
Following is a sample of my code

sub queryresult {
    my $debug = 1; # 0 to off, 1 to turn it on         
    my $results;

    my $dbuser = '111';
    my $dbpasswd = '222';
    
    my $s_off_no = $s_off_no;
        
    # Query to check if driver exist
    my $query1 = "select veh_reg_no from offence " .
                 "where off_no = $s_off_no";    

    # Database DBI driver name
    my $dbname = "DBI:Oracle:";

    # Create database handle
    my $dbh = DBI->connect($dbname, $dbuser, $dbpasswd);
    if (!$dbh) {
       showSQLerror("Connecting to the database");
       return;
    } else {
      # set AutoCommit  1 = ON, 0 = OFF (1 is default)
      # transaction control is *required* here, hence set OFF
      $dbh->{AutoCommit} = 0;
    }

    if ($debug == 1) {
      print("<br>query1: $query1");    
    }
    $results = run_statement($dbh,$query1,"Y");
    if ($results == 0) {
        printErrors('Invalid Offence No.!');
        return;
    } elsif ($results == -1) {
        $dbh->rollback;
        $dbh->disconnect;
        return;
    } else {
    
      $dbh->commit;
      $dbh->disconnect;
      print("<br>$results");
    }
}


sub run_statement {

    my ($dbh,$sql,$getNo)=@_;
    my $new_offNo;

    # Create a statement handle - prepare the statement
    my $sth = $dbh->prepare($sql);
    if (!$sth) {
        showSQLerror("Preparing SQL statement");
        return (-1);
    }

    # Execute the statement against the database
    $sth->execute;
    if ($DBI::errstr) {
        showSQLerror("Executing SQL Statment");
        $sth->finish;
        return (-1);
    }

print("<br>sql :   $sql<br>");

    if ($getNo eq "Y") {
        ($new_offNo) = $sth->fetchrow;
    } else {
        $new_offNo = 0;
    }
    $sth->finish;

    return ($new_offNo);
}
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