测试服务器做了RMAN还原后，发现告警日志文件有如下错误信息ORA-01110: data file 206: ‘/u04/epps/oradata/temp02.dbf‘
Errors in file /u01/app/oracle/admin/epps/bdump/epps_j000_12672.trc:ORA-01157: cannot identify/lock data file 206 - see DBWR trace file
ORA-01110: data file 206: ‘/u04/epps/oradata/temp02.dbf‘Thu Apr 16 22:00:08 2015
Errors in file /u01/app/oracle/admin/epps/bdump/epps_j000_12672.trc:ORA-01157: cannot identify/lock data file 206 - see DBWR trace file
ORA-01110: data file 206: ‘/u04/epps/oradata/temp02.dbf‘Thu Apr 16 22:00:37 2015
Errors in file /u01/app/oracle/admin/epps/bdump/epps_j000_12672.trc:ORA-01157: cannot identify/lock data file 206 - see DBWR trace file
ORA-01110: data file 206: ‘/u04/epps/oradata/temp02.dbf‘Thu Apr 16 22:00:43 2015
Errors in file /u01/app/oracle/admin/epps/bdump/epps_j000_12672.trc:ORA-01157: cannot identify/lock data file 206 - see DBWR trace file
/u01/app/oracle/admin/epps/bdump/epps_j000_12672.trc
最后检查时，发现TEMP表空间的数据文件有问题。最后删除、重建了TEMP表空间的tempfile后，问题解决。
原文：http://www.cnblogs.com/kerrycode/p/4435319.html