Oracle: Increase redo log size

 select group#,sequence#,bytes,archived,status from v$log;


ALTER DATABASE DROP LOGFILE GROUP 15;

alter database add logfile group 15 ('/usr/opt/app/oracle/admin/hrprod/redo01/redo01g15.log', '/usr/opt/app/oracle/admin/hrprod/redo02/redo02g15.log') size 1032M reuse;



SQL>  alter system switch logfile;

Based on the current redo log state and need make the old groups inactive 

SQL>   alter system archive log group 1;


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