运行pl程序，提示：Can't locate DBI.pm in @INC，解决方法如下：
Install cygwin with these options:
- gcc (devel)
- make (devel)
- binutils (devel)
- Perl 5.8.6 (interpreters)
- Perl win32 API (libs)
- PostgreSQL (database)
installing DBI-1.48.tar.gz as follows:
- Unpack the kit into /usr/src (c:\cygwin\usr\src)
- Open a cygwin shell and cd to /usr/src/DBI-1.48
- perl Makefile.PL
- make
- make test
- make install
在cygwin的shell下执行相应pl文件，比如./ora_DBMS_exp.pl
(注：在cmd下执行pl依然提示Can't locate DBI.pm in @INC......)