>> ogg 12，oracle 11.2 ,os redhat7
SQL> alter system switch logfile;
alter system switch logfile
*
ERROR at line 1:
ORA-03113: end-of-file on communication channel
Process ID: 47709
Session ID: 191 Serial number: 5
SQL> startup
ORACLE instance started.
Total System Global Area 3073216512 bytes
Fixed Size 2257192 bytes
Variable Size 704646872 bytes
Database Buffers 2348810240 bytes
Redo Buffers 17502208 bytes
Database mounted.
ORA-00316: log 2 of thread 1, type 0 in header is not log file
ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/mytest11/redo02.log'
why ?
thanks !