Actually I am going to drop a database.I would like to reinstall the same database with the same data again if needed.So I have decided to do a exp dba/pwd@dbname full=y file=ex.dmp.Will this dump file will be sufficient alone to create the same data.If not let me know.Moreover right now we are having ORACLE 8.1.6 & we may need to retain the database but in ORACLE 8.1.7.I WAS WONDERING WHETHER WE NEED TO BACK UP CONTROL FILES,INIT FILES,REDOLOGS & DATAFILES.Is it needed to be backed up or we can just create a blank database & just do a imp dba/pwd@dbname file=ex.dmp.Hope this will create the necessary tablespaces,datafiles etc etc.If I am wrong please correct me