oracle误用操作系统命令删除数据文件的恢复方法

事故原因:
1.由于误操作用hp unix 命令 rm -f datafilename 删除表空间的数据文件
2.alter tablespace tablespacenaem drop datafile datafile ;
3.drop tablespace tablespacename including content and datafiles;
上述两个步骤我用了近三个小时都没有执行完，最后导致数据库宕机。下面把我当时启动数据的后台页面展现给大家，为以后出现同样的问题，提供一个参照的作用.
SP2-0734: unknown command beginning "sqlplus /n..." - rest of line ignored.
SQL> conn sys/passwd as sysdba;
Connected to an idle instance.
SQL> startup
ORACLE instance started.
Total System Global Area 3.2212E+10 bytes
Fixed Size                  2115136 bytes
Variable Size            3204450752 bytes
Database Buffers         2.8991E+10 bytes
Redo Buffers               14659584 bytes
Database mounted.
ORA-01157: cannot identify/lock data file 39 - see DBWR trace file
ORA-01110: data file 39: '/data/tbs_db_bas2.dbf'
SQL> shutdown immediate;
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.
Total System Global Area 3.2212E+10 bytes
Fixed Size                  2115136 bytes
Variable Size            3204450752 bytes
Database Buffers         2.8991E+10 bytes
Redo Buffers               14659584 bytes
Database mounted.
SQL> recover datafile tbs_db_bas2.dbf;
ORA-02236: invalid file name
SQL> recover datafile '/data/tbs_db_bas2.dbf';
ORA-00283: recovery session canceled due to errors
ORA-01110: data file 39: '/data/t