perl problem in solaris 5.10

Hi ,

while i am executing the file TablespaceFree.pl
i am getting the problem

oracle@PRDCMW  > uname -a
SunOS ulscmetl02.uls-prod.com 5.10 Generic_142900-03 sun4u sparc
SUNW,Sun-Fire-V490

oracle@PRDCMW  >
oracle@PRDCMW  > perl TablespaceFree.pl
Can't locate DBI.pm in @INC (@INC contains:
/usr/perl5/5.8.4/lib/sun4-solaris-64int /usr/perl5/5.8.4/lib
/usr/perl5/site_perl/5.8.4/sun4-solaris-64int /usr/perl5/site_perl/5.8.4
/usr/perl5/site_perl /usr/perl5/vendor_perl/5.8.4/sun4-solaris-64int
/usr/perl5/vendor_perl/5.8.4 /usr/perl5/vendor_perl .) at TablespaceFree.pl
line 23.
BEGIN failed--compilation aborted at TablespaceFree.pl line 23.
oracle@PRDCMW  > perl -v
This is perl, v5.8.4 built for sun4-solaris-64int
(with 32 registered patches, see perl -V for more detail)
Copyright 1987-2004, Larry Wall
Perl may be copied only under the terms of either the Artistic License or
the
GNU General Public License, which may be found in the Perl 5 source kit.
Complete documentation for Perl, including FAQ lists, should be found on
this system using `man perl' or `perldoc perl'.  If you have access to the
Internet, point your browser at http://www.perl.com/, the Perl Home Page.

please some look into this peoblem
-- 
Thanks
-----------------------
Somnath Ganguly