Alter database: Logfile Commands

ALTER DATABASE ADD LOGFILE GROUP 2 ('/opt/oracle/logfiles/redo02a.rdo', '/opt/oracle/logfiles/redo02b.rdo') SIZE 300M REUSE;
ALTER DATABASE ADD LOGFILE MEMBER '/opt/oracle/logfiles/redo02c.rdo' to GROUP 2;
ALTER DATABASE ADD LOGFILE thread 3 GROUP 2 ('/opt/oracle/logfiles/redo02a.rdo', '/opt/oracle/logfiles/redo02b.rdo') SIZE 300M REUSE;
ALTER DATABASE DROP LOGFILE GROUP 3;
ALTER DATABASE DROP LOGFILE MEMBER '/opt/oracle/logfiles/redo02b.rdo';