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[oracle@linux trace]$ vi alert_orcl.log 
MMON started with pid=14, OS id=9089
RESETLOGS after incomplete recovery UNTIL CHANGE 522752
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_9087.trc:
ORA-00313: open failed for members of log group 1 of thread 1
ORA-00312: online log 1 thread 1: '/u01/app/oracle/oradata/orcl/redo01.log'
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3
Fri Jan 08 22:02:43 2010
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_9087.trc:
ORA-00313: open failed for members of log group 2 of thread 1
ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/orcl/redo02.log'
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3
Fri Jan 08 22:03:00 2010
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_9087.trc:
ORA-00313: open failed for members of log group 3 of thread 1
ORA-00312: online log 3 thread 1: '/u01/app/oracle/oradata/orcl/redo03.log'
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3
Fri Jan 08 22:03:13 2010
Setting recovery target incarnation to 2
Fri Jan 08 22:03:13 2010
Assigning activation ID 1235559883 (0x49a525cb)
Thread 1 ope