最后，如果是system表空间损坏，又无备份，那么是无法打开数据库的，如果是sysaux，无备份，数据库还是可以open，当然要在重建控制文件的时候去掉损坏的数据文件，否则是无法创建成功的，如下实例：
SQL> CREATE CONTROLFILE REUSE DATABASE "SKYREAD" NORESETLOGS FORCE LOGGING ARCHIVELOG
2 MAXLOGFILES 20
3 MAXLOGMEMBERS 5
4 MAXDATAFILES 1000
5 MAXINSTANCES 8
6 MAXLOGHISTORY 2337
7 LOGFILE
8 GROUP 1 '/database/oradata/skyread/redo01.log' SIZE 512M,
9 GROUP 2 '/database/oradata/skyread/redo02.log' SIZE 512M,
10 GROUP 3 '/database/oradata/skyread/redo03.log' SIZE 512M,
11 GROUP 4 '/database/oradata/skyread/redo04.log' SIZE 512M,
12 GROUP 5 '/database/oradata/skyread/redo05.log' SIZE 512M
13 DATAFILE
14 '/database/oradata/skyread/system01.dbf',
15 '/database/oradata/skyread/tbs_test.dbf',
16
17 '/database/oradata/skyread/users01.dbf',
18 '/database/oradata/skyread/tbs_tbs.dbf',
19 '/database2/oradata/skyread/TBS_MRPMUSIC01.dbf',
20 '/database/oradata/skyread/sf01.dbf',
21 '/database2/oradata/skyread/undotbs02'
22 CHARACTER SET UTF8;
CREATE CONTROLFILE REUSE DATABASE "SKYREAD" NORESETLOGS FORCE LOGGING ARCHIVELOG
*
ERROR at line 1:
ORA-01503: CREATE CONTROLFILE failed
ORA-01565: error in identifying file '/database/oradata/skyread/sysaux01.dbf'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
SQL> CREATE CONTROLFILE REUSE DATABASE "SKYREAD" NORESETLOGS FORCE LOGGING ARCHIVELOG
2 MAXLOGFILES 20
3 MAXLOGMEMBERS 5
4 MAXDATAFILES 1000
5 MAXINSTANCES 8
6 MAXLOGHISTORY 2337
7 LOGFILE
8 GROUP 1 '/database/oradata/skyread/redo01.log' SIZE 512M,
9 GROUP 2 '/database/oradata/skyread/redo02.log' SIZE 512M,
10 GROUP 3 '/database/oradata/skyread/redo03.log' SIZE 512M,
11 GROUP 4 '/database/oradata/skyread/redo04.log' SIZE 512M,
12 GROUP 5 '/database/oradata/skyread/redo05.log' SIZE 512M
13 DATAFILE
14 '/database/oradata/skyread/system01.dbf',
15 '/database/oradata/skyread/tbs_test.dbf',
16 '/database/oradata/skyread/users01.dbf',
17 '/database/oradata/skyread/tbs_tbs.dbf',
18 '/database2/oradata/skyread/TBS_MRPMUSIC01.dbf',
19 '/database/oradata/skyread/sf01.dbf',
20 '/database2/oradata/skyread/undotbs02'
21 CHARACTER SET UTF8;
Control file created.
SQL> alter database open;
Database altered.