找不到DBI.pm

我正在尝试启动此脚本:

#!/usr/bin/perl 

use DBI;

my $dbh = DBI->connect( 'dbi:Oracle:host=lonlin2;sid=TIMFX1AD;port=1524','xbsesdbo','xbsesdbo123' )  || die ( $DBI::errstr . "\n" );

my $query= "SELECT * FROM product_elements WHERE element_id = 1001";
my $queryHandler= $dbh->prepare($query);

my $result= $queryHandler->execute();


open(fileHandler,"> note.txt");

print fileHandler "Risultato query: $result\n";

my $e= $dbh->disconnect();
close(fileHandler);

当我启动此脚本时,我收到此错误:

无法在@INC中找到DBI.pm(@INC包含:/opt/perl_32/lib/5.8.3/IA64.ARCHREV_0-thread-multi /opt/perl_32/lib/5.8.3/opt/perl_32/lib/site_perl/5.8.3/IA64.ARCHREV_0-thread-multi /opt/perl_32/lib/site_perl/5.8.3/opt/perl_32/lib/site_perl /opt/perl_32/lib/vendor_perl/5.8.3/IA64.ARCHREV_0- thread-multi /opt/perl_32/lib/vendor_perl/5.8.3/opt/perl_32/lib/vendor_perl.)at ./prova.pl第3行.

我已经安装好!! DBI.pm安装!!