Oracle RMAN完全恢复案例（四）

案例4：

--恢复表空间（open状态）

1）测试环境

07:47:00 SQL> insert into emp1 select * from emp where rownum <3;

2 rows created.

07:47:14 SQL> commit;

Commit complete.

07:47:17 SQL> select * from emp1;

EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO

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

7369 SMITH      CLERK           7902 17-DEC-80        800                    20

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

07:47:20 SQL> conn /as sysdba

Connected.

07:47:23 SQL>

[oracle@work ~]$ rm /u01/app/oracle/oradata/prod/users01.dbf

07:47:23 SQL> alter system flush buffer_cache;

System altered.

07:47:41 SQL> conn scott/tiger

Connected.

07:47:44 SQL>

07:47:44 SQL> select * from emp1;

select * from emp1

*

ERROR at line 1:

ORA-01116: error in opening database file 2

ORA-01110: data file 2: '/u01/app/oracle/oradata/prod/users01.dbf'

ORA-27041: unable to open file

Linux Error: 2: No such file or directory

Additional information: 3

07:47:48 SQL>

2）恢复表空间

RMAN> run {

2> sql'alter database datafile 2 offline';

3> restore tablespace users;

4> recover tablespace users;

5> sql 'alter database datafile 2 online';

6> }

3）验证

07:47:48 SQL> select * from emp1;

EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO

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

7369 SMITH      CLERK           7902 17-DEC-80        800                    20

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

07:50:31 SQL>

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