yes i am talking about dump file.
To export(create a dump file) particular set of rows from a table(s), the export command might look like this:
C:\>exp userid=user_name/pass[@service_name]
file=c:\exp.dmp -- complete path to a new dump file
tables=(test_table) -- table name
query=\"where extract(month from date_column) = 9\" -- filter
log=c:\exp.log -- optional log file
Here we are not taking year into consideration. if year is important to you, simply change the where
clause.