You could simply write standard SQL scripts and parse the output....

system ('sqlplus -s /NOLOG @file.sql');
Inside your SQL, 
set head off feed off ....etc 
you write spool /script/dir/tmp/file.log;
SELECT .....
spool off;
[download]

and open and get the output...if the SQL is simple and fixed. Or you can use DBI/DBD module for oracle.