问题：

SQL> startup

ORACLE instance started.

Total System Global Area 1610612736 bytes

Fixed Size 779080 bytes

Variable Size 535043256 bytes

Database Buffers 1073741824 bytes

Redo Buffers 1048576 bytes

Database mounted.

ORA-01113: file 1 needs media recovery

ORA-01110: data file 1: '/oracle/app/oradata/phoneclient/system01.dbf'


解决方法：

SQL> RECOVER DATAFILE '/oracle/app/oradata/phoneclient/system01.dbf '

Media recovery complete.

SQL> recover tablespace system;

Media recovery complete.

SQL> RECOVER DATABASE;

Media recovery complete.

SQL> ALTER DATABASE OPEN;

Database altered.