lr-x------ 1 oracle oinstall 64 Mar 7 11:23 11 -> /u01/app/oracle/product/11.2.0/dbhome_1/rdbms/mesg/oraus.msb
l-wx------ 1 oracle oinstall 64 Mar 7 11:23 2 -> /dev/null
lrwx------ 1 oracle oinstall 64 Mar 7 11:23 256 -> /u01/oradata/bys3/control01.ctl
lrwx------ 1 oracle oinstall 64 Mar 7 11:23 257 -> /u01/oradata/bys3/control02.ctl
lrwx------ 1 oracle oinstall 64 Mar 7 11:23 258 -> /u01/oradata/bys3/system01.dbf (deleted) ---这里会一直闪
lrwx------ 1 oracle oinstall 64 Mar 7 11:23 259 -> /u01/oradata/bys3/sysaux01.dbf
lrwx------ 1 oracle oinstall 64 Mar 7 11:23 260 -> /u01/oradata/bys3/undotbs01.dbf
lrwx------ 1 oracle oinstall 64 Mar 7 11:23 261 -> /u01/oradata/bys3/user01.dbf
lrwx------ 1 oracle oinstall 64 Mar 7 11:23 262 -> /u01/oradata/bys3/test1.dbf
lrwx------ 1 oracle oinstall 64 Mar 7 11:23 263 -> /u01/oradata/bys3/test2.dbf
lrwx------ 1 oracle oinstall 64 Mar 7 11:23 264 -> /u01/oradata/bys3/test22.dbf
lrwx------ 1 oracle oinstall 64 Mar 7 11:23 265 -> /u01/oradata/bys3/test3.dbf
lrwx------ 1 oracle oinstall 64 Mar 7 11:23 266 -> /u01/oradata/bys3/temp01.dbf
lr-x------ 1 oracle oinstall 64 Mar 7 11:23 3 -> /dev/null
lr-x------ 1 oracle oinstall 64 Mar 7 11:23 4 -> /dev/null
lr-x------ 1 oracle oinstall 64 Mar 7 11:23 5 -> /dev/null
lr-x------ 1 oracle oinstall 64 Mar 7 11:23 6 -> /u01/app/oracle/product/11.2.0/dbhome_1/rdbms/mesg/oraus.msb
lr-x------ 1 oracle oinstall 64 Mar 7 11:23 7 -> /proc/10986/fd
lr-x------ 1 oracle oinstall 64 Mar 7 11:23 8 -> /dev/zero
lrwx------ 1 oracle oinstall 64 Mar 7 11:23 9 -> /u01/app/oracle/product/11.2.0/dbhome_1/dbs/hc_bys3.dat
[oracle@bys3 ~]$ cp /proc/10986/fd/258 /u01/oradata/bys3/system01.dbf
[oracle@bys3 ~]$ ll /u01/oradata/bys3/system01.dbf
-rw-r----- 1 oracle oinstall 524296192 Mar 7 11:25 /u01/oradata/bys3/system01.dbf
此时，ll /proc/10986/fd还是会显示文件状态是：(deleted)，如果是非SYSTEM文件，在线RECOVER后这里会变正常。
####################
SYS@ bys3>conn bys/bys
Connected.
BYS@ bys3>select TABLESPACE_NAME,STATUS,ONLINE_STATUS from dba_data_files;
TABLESPACE_NAME STATUS ONLINE_
------------------------------ --------- -------
SYSTEM AVAILABLE SYSTEM
SYSAUX AVAILABLE ONLINE
USERS AVAILABLE ONLINE
TEST1 AVAILABLE ONLINE
TEST1 AVAILABLE ONLINE
TEST2 AVAILABLE ONLINE
TEST3 AVAILABLE ONLINE
ALERT日志中的警告信息：
Fri Mar 07 11:17:39 2014
Errors in file /u01/diag/rdbms/bys3/bys3/trace/bys3_m000_14498.trc:
ORA-00604: error occurred at recursive SQL level 2
ORA-01116: error in opening database file 1
ORA-01110: data file 1: '/u01/oradata/bys3/system01.dbf'
ORA-27041: unable to open file
Linux Error: 2: No such file or directory
Additional information: 3
Checker run found 1 new persistent data failures
Fri Mar 07 11:18:41 2014
Errors in file /u01/diag/rdbms/bys3/bys3/trace/bys3_m000_14516.trc:
ORA-01116: error in opening database file 1
ORA-01110: data file 1: '/u01/oradata/bys3/system01.dbf'
ORA-27041: unable to open file
Linux Error: 2: No such file or directory
Additional information: 3
Fri Mar 07 11:18:42 2014
Errors in file /u01/diag/rdbms/bys3/bys3/trace/bys3_m001_14520.trc:
ORA-00604: error occurred at recursive SQL level 2
ORA-01116: error in opening database file 1
ORA-01110: data file 1: '/u01/oradata/bys3/system01.dbf'
ORA-27041: unable to open file
Linux Error: 2: No such file or directory
Additional information: 3
############
此时，应该关闭数据库，打开到MOUNT，