Oracle 11g資料庫恢復：場景10：新建表空間沒有備份

sys@TESTDB11>select tablespace_name from dba_tablespaces;

TABLESPACE_NAME

------------------------------

SYSTEM

SYSAUX

UNDOTBS1

TEMP

USERS

EXAMPLE

ROTBS

NEWUNDOTBS

8 rows selected.

--建立新的表空間newts

sys@TESTDB11>create tablespace newts datafile '/u01/app/oracle/oradata/TestDB11/newts01.dbf' size 20m;

Tablespace created.

--在新表空間中建立一個表

scott@TESTDB11>create table emp_newts tablespace newts as select * from emp;

Table created.

scott@TESTDB11>exit

Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

[oracle@S1011:/export/home/oracle]$

--檔案損壞

sys@TESTDB11>!rm /u01/app/oracle/oradata/TestDB11/newts01.dbf

--清除快取

sys@TESTDB11>alter system flush buffer_cache;

System altered.

--查詢報錯

[oracle@S1011:/export/home/oracle]$ sqlplus scott/scott

SQL*Plus: Release 11.2.0.3.0 Production on Sat Aug 10 13:41:15 2013

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

scott@TESTDB11>select * from emp_newts;

select * from emp_newts

              *

ERROR at line 1:

ORA-01116: error in opening database file 8

ORA-01110: data file 8: '/u01/app/oracle/oradata/TestDB11/newts01.dbf'

ORA-27041: unable to open file

Solaris-AMD64 Error: 2: No such file or directory

Additional information: 3

--離線

sys@TESTDB11>alter database datafile 8 offline;

Database altered.

--建立檔案,相當於還原（不需要指定檔案大小和位置，因為控制檔案中有記錄)

sys@TESTDB11>alter database create datafile '/u01/app/oracle/oradata/TestDB11/newts01.dbf';

Database altered.

--介質恢復

sys@TESTDB11>recover datafile 8;

Media recovery complete.

--聯機

sys@TESTDB11>alter database datafile 8 online;

Database altered.

--執行查詢,確認已經得到恢復

scott@TESTDB11>select * from emp_newts;

     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO

---------- ---------- --------- ---------- --------- ---------- ---------- ----------

      7369 SMITH      CLERK           7902 17-DEC-80       1800                    20

      7499 ALLEN      SALESMAN        7698 20-FEB-81       1600        300         30

      7521 WARD       SALESMAN        7698 22-FEB-81       1250        500         30

      7566 JONES      MANAGER         7839 02-APR-81       2975                    20

      7654 MARTIN     SALESMAN        7698 28-SEP-81       1250       1400         30

      7698 BLAKE      MANAGER         7839 01-MAY-81       2850                    30

      7782 CLARK      MANAGER         7839 09-JUN-81       2450                    10

      7788 SCOTT      ANALYST         7566 19-APR-87       6000                    20

      7839 KING       PRESIDENT            17-NOV-81       5000                    10

      7844 TURNER     SALESMAN        7698 08-SEP-81       1500          0         30

      7876 ADAMS      CLERK           7788 23-MAY-87       1100                    20

      7900 JAMES      CLERK           7698 03-DEC-81        950                    30

      7902 FORD       ANALYST         7566 03-DEC-81       3000                    20

      7934 MILLER     CLERK           7782 23-JAN-82       2600                    10

14 rows selected.