bash-2.03$ cat execMonks.pl 
#!/usr/local/bin/perl -w
use strict;
use DBI;
 
my $dbh = DBI->connect("dbi:SQLite:dbname=request_db","","");
 
my $createTableSQL = <<SQL;
CREATE TABLE REQUEST (
        REQ             NUMBER,
        STATUS          NUMBER
)
SQL
 
my $sth = $dbh->prepare( $createTableSQL ) or die $dbh->errstr . "\n";
$sth->execute() or warn $dbh->errstr . "\n";
$sth->finish;
 
bash-2.03$ ./execMonks.pl 
 
bash-2.03$ ./execMonks.pl 
DBD::SQLite::st execute failed: table REQUEST already exists at ./execMonks.pl line 15.
table REQUEST already exists