Can anyone please suggest tool/software to create small database containing subset of data from Big database? We are currently using tool called Checkmate to create small database which contains subset of data from big databases. i.e. the structure of the small database is same as the big database but amount of data differs. These small databases used as development system testing purposes. The current tool checkmate is very time consuming and inefficient so currently we are looking for alternatives. Please advise. This tool should work with Oracle.