Originally posted by anandkl
Hi,
Take backup of the production db.

Take a backup of the control file on production i.e,
alter database backup controlfile to trace;
u could also give an path instead of trace.
Open this file will give the create database command. Just do this in QA and restore the backup.
You will have a QA DB same as PRODUCTION db

regards
anandkl
The fastest is via RMAN.

duplicate target database to QA_DB;