SQL > CREATE CONTROLFILE DATABASE sample
   2> RESETLOGS ARCHIVELOG
   3> MAXLOGFILES 5 MAXLOGHISTORY 100
   4> MAXDATAFILES 10 MAXINTANCES 2
   5> LOGFILE GROUP 1 (‘+dgroupA, ‘+dgroupB’) SIZE 100M,
   6>         GROUP 2 (‘+dgroupA, ‘+dgroupB’) SIZE 100M
   7> DATAFILE ‘+dgroupA.261.12345678’ SIZE 100M
   8> DATAFILE ‘+dgroupA.262.87654321’ SIZE 100M;