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  ??: 
  1.???????; 
  2.??????????????????; 
  3.????????????????,??????????,????????; 
  ??: 
  ?????????: 
  SQL> create table test_b (id number(10)) tablespace bbb; 
  Table created. 
  SQL> insert into test_b values (1); 
  1 row created. 
  SQL> commit; 
  NAME 
  -------------------------------------------------------------------------------- 
      FILE# 
  ---------- 
  /opt/oracle/oradata/R11203/aaa.dbf 
         10 
    
  /opt/oracle/oradata/R11203/bbb.dbf 
         11 
    
    
  11 rows selected. 
  SQL> host 
  ??????,?????? 
  bash-4.2$ ls -al /opt/oracle/oradata/R11203/bbb.dbf 
  -rw-rw----   1 oracle    
dba        10493952 Apr  4 09:53
/opt/oracle/oradata/R11203/bbb.dbf 
  bash-4.2$ mv /opt/oracle/oradata/R11203/bbb.dbf
/opt/oracle/oradata/R11203/bbb.dbf.bak 
  bash-4.2$ sqlplus / as sysdba 
  SQL*Plus: Release 11.2.0.3.0 Production on Fri Apr 4
09:55:03 2014 
    
  Copyright (c) 1982, 2011, Oracle.  All rights
reserved. 
  Connected to: 
  Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 -
64bit Production 
  With the Partitioning, OLAP, Data Mining and Real
Application Testing options 
  SQL> alter tablespace bbb read only; 
  alter tablespace bbb read only 
  * 
  ERROR at line 1: 
  ORA-01116: error in opening database file 11 
  ORA-01110: data file 11:
'/opt/oracle/oradata/R11203/bbb.dbf' 
  ORA-27041: unable to open file 
  HPUX-ia64 Error: 2: No such file or directory 
  Additional information: 3 
  SQL> shutdown immediate; 
  ORA-01116: error in opening database file 11 
  ORA-01110: data file 11:
'/opt/oracle/oradata/R11203/bbb.dbf' 
  ORA-27041: unable to open file 
  HPUX-ia64 Error: 2: No such file or directory 
  Additional information: 3 
  SQL> select status from v$instance; 
  STATUS 
  ------------ 
  OPEN 
  SQL> alter system switch logfile; 
  System altered. 
  SQL> / 
  System altered. 
  SQL> / 
  System altered. 
  SQL>/ 
  System altered. 
  SQL> / 
  System altered. 
  SQL> / 
  System altered. 
  SQL> 
  ?? 
  SQL> shutdown immediate; 
  ORA-01116: error in opening database file 11 
  ORA-01110: data file 11:
'/opt/oracle/oradata/R11203/bbb.dbf' 
  ORA-27041: unable to open file 
  HPUX-ia64 Error: 2: No such file or directory 
  Additional information: 3 
    
  SQL> shutdown abort; 
  ORACLE instance shut down. 
  ???????mount?? 
  SQL> startup mount; 
  ORACLE instance started. 
    
  Total System Global Area  329859072 bytes 
  Fixed
Size                 
2182336 bytes 
  Variable
Size            
285213504 bytes 
  Database
Buffers           37748736
bytes 
  Redo
Buffers               
4714496 bytes 
  Database mounted. 
  ??alter database create datafile <> as ....???,???????????: 
    
  SQL> alter database create datafile 11; 
  Database altered. 
  ???????redo log????????? 
  SQL> recover datafile 11; 
  Media recovery complete. 
  SQL> alter database open; 
  Database altered. 
  SQL> select * from test_b; 
    
         ID 
  ---------- 
          1 
 
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