恢复是遇到ORA-00283等错误

ALLSTARS_ORACLE

ORA-00283: recovery session canceled due to errors
ORA-01110: data file 7: '/oracle/oradata/spe/app2_01.dbf'
ORA-01157: cannot identify/lock data file 7 - see DBWR trace file
ORA-01110: data file 7: '/oracle/oradata/spe/app2_01.dbf'
本来我是做恢复controlfile的实验的，备份之前我删除了一个表空间连同datafile 就是上面的app2_01.dbf，开始恢复controlfile的时候报这些错，该怎么解决啊？


现在数据库打不开，不好建