手动不完全恢复测试使用备份控制文件
备份数据库
SQL> select name from v$datafile;
NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/prod/system01.dbf
/u01/app/oracle/oradata/prod/sysaux01.dbf
/u01/app/oracle/oradata/prod/undotbs01.dbf
/u01/app/oracle/oradata/prod/users01.dbf
/u01/app/oracle/oradata/prod/test01.dbf
SQL> alter database begin backup;
Database altered.
SQL> !
[[email protected] ~]$ cd $ORACLE_BASE/oradata
[[email protected] oradata]$ ls
prod prod_bk
[[email protected] oradata]$ cp ./prod/*.dbf ./prod_bk/
[[email protected] oradata]$ exit
exit
SQL> alter database end backup;
Database altered.
SQL> alter database backup controlfile to ‘/u01/app/oracle/oradata/prod_bk/controlbk20150618.ctl‘;
Database altered.
实验开始
SQL> conn scott/oracle
Connected.
SQL> create table test(id number);
Table created.
SQL> begin
2 for i in 1..100 loop
3 insert into test values( i);
4 end loop;
5 end;
6 /
PL/SQL procedure successfully completed.
SQL> commit;
Commit complete.
SQL>
查表在表空间
SQL> select table_name, tablespace_name from user_tables;
TABLE_NAME TABLESPACE_NAME
------------------------------ ------------------------------
TEST TEST
EMPLOYEE USERS
REOVERTEST USERS
SALGRADE USERS
BONUS USERS
EMP USERS
DEPT USERS
7 rows selected.
SQL> conn / as sysdba
Connected.
SQL> drop tablespace test including contents and datafiles;
Tablespace dropped.
SQL>
/*
删除表空间操作会记录在日志文件中，查看日记文件记录如下：
Sun Jun 14 06:28:55 2015
drop tablespace test including contents and datafiles
Sun Jun 14 06:29:11 2015
Deleted file /u01/app/oracle/oradata/prod/test01.dbf
Completed: drop tablespace test including contents and datafiles
*/
SQL> select name from v$datafile;
NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/prod/system01.dbf
/u01/app/oracle/oradata/prod/sysaux01.dbf
/u01/app/oracle/oradata/prod/undotbs01.dbf
/u01/app/oracle/oradata/prod/users01.dbf
SQL> select * from emp;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- ---------- --------- ---------- --------- ---------- ---------- ----------
7369 SMITH CLERK 7902 17-DEC-80 800 20
7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
7566 JONES MANAGER 7839 02-APR-81 2975 20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30
7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
7782 CLARK MANAGER 7839 09-JUN-81 2450 10
7788 SCOTT ANALYST 7566 19-APR-87 3000 20
7839 KING PRESIDENT 17-NOV-81 5000 10
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30
7876 ADAMS CLERK 7788 23-MAY-87 1100 20
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- ---------- --------- ---------- --------- ---------- ---------- ----------
7900 JAMES CLERK 7698 03-DEC-81 950 30
7902 FORD ANALYST 7566 03-DEC-81 3000 20
7934 MILLER CLERK 7782 23-JAN-82 1300 10
14 rows selected.
SQL> truncate table emp;
Table truncated.
SQL> select * from emp;
no rows selected
SQL>
SQL>
SQL> select * from test;
select * from test
*
ERROR at line 1:
ORA-00942: table or view does not exist
SQL>
先在需要恢复查看test表，但是其所在表空间已经被删除，需要恢复，步骤如下：
SQL> conn / as sysdba
Connected.
SQL> shutdown abort;
ORACLE instance shut down.
restore所有手工备份
SQL> !
[[email protected] ~]$ cd /u01/app/oracle/oradata/prod
[[email protected] prod]$ ls
control01.ctl redo01.log redo03.log system01.dbf temp101.dbf users01.dbf
control02.ctl redo02.log sysaux01.dbf temp01.dbf undotbs01.dbf
[[email protected] prod]$ rm -rf *.dbf
[[email protected] prod]$ rm -rf *.ctl
[[email protected] prod]$ cp ../prod_bk/*.dbf ./
[[email protected] prod]$ ls
redo01.log redo02.log redo03.log sysaux01.dbf system01.dbf temp01.dbf temp101.dbf test01.dbf undotbs01.dbf users01.dbf
[[email protected] prod]$ cp ../prod_bk/controlbk20150618.ctl ./control01.ctl
[[email protected] prod]$ cp ../prod_bk/controlbk20150618.ctl ./control02.ctl
[[email protected] prod]$ exit
exit
SQL>
到mount状态进行不完全恢复
SQL> startup mount;
ORACLE instance started.
Total System Global Area 534462464 bytes
Fixed Size 2254952 bytes
Variable Size 209717144 bytes
Database Buffers 314572800 bytes
Redo Buffers 7917568 bytes
Database mounted.
SQL> sho parameters nls_
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
nls_calendar string
nls_comp string BINARY
nls_currency string
nls_date_format string
nls_date_language string
nls_dual_currency string
nls_iso_currency string
nls_language string AMERICAN
nls_length_semantics string BYTE
nls_nchar_conv_excp string FALSE
nls_numeric_characters string
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
nls_sort string
nls_territory string AMERICA
nls_time_format string
nls_time_tz_format string
nls_timestamp_format string
nls_timestamp_tz_format string
SQL> alter session set nls_date_format=‘yyyy-mm-dd hh24:mi:ss‘;
Session altered.
recover 数据库到删除表空间的时间点（根据告警日志文件）
SQL> recover database until time ‘2015-06-14 06:28:55‘ using backup controlfile;
ORA-00279: change 1213896 generated at 06/14/2015 06:18:49 needed for thread 1
ORA-00289: suggestion : /oracle/arch1/1_2_882339416.dbf
ORA-00280: change 1213896 for thread 1 is in sequence #2
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
auto
ORA-00308: cannot open archived log ‘/oracle/arch1/1_2_882339416.dbf‘
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
ORA-00308: cannot open archived log ‘/oracle/arch1/1_2_882339416.dbf‘
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below
ORA-01195: online backup of file 1 needs more recovery to be consistent
ORA-01110: data file 1: ‘/u01/app/oracle/oradata/prod/system01.dbf‘
找不到日志文件，实验中最后关库用的是shutdown abort，archived_log 为
SQL> select name from v$archived_log;
NAME
------------------------------------------
/oracle/arch1/1_1_882332679.dbf
/oracle/arch1/1_1_882332679.dbf
/oracle/arch1/1_2_882332679.dbf
/oracle/arch1/1_1_882339416.dbf
所以需要当前日志做恢复用，查看当前日志
SQL> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES BLOCKSIZE MEMBERS ARC STATUS FIRST_CHANGE# FIRST_TIME NEXT_CHANGE# NEXT_TIME
---------- ---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- ------------------- ------------ -------------------
1 1 1 52428800 512 1 YES INACTIVE 1203589 2015-06-14 06:16:56 1213831 2015-06-14 06:18:43
3 1 0 52428800 512 1 YES UNUSED 0 0
2 1 2 52428800 512 1 NO CURRENT 1213831 2015-06-14 06:18:43 2.8147E+14
SQL> select group#, member from v$logfile;
GROUP# MEMBER
---------- --------------------------------------------------
3 /u01/app/oracle/oradata/prod/redo03.log
2 /u01/app/oracle/oradata/prod/redo02.log
1 /u01/app/oracle/oradata/prod/redo01.log
当前日志为2组
SQL> recover database until time ‘2015-06-14 06:28:55‘ using backup controlfile;
ORA-00279: change 1213896 generated at 06/14/2015 06:18:49 needed for thread 1
ORA-00289: suggestion : /oracle/arch1/1_2_882339416.dbf
ORA-00280: change 1213896 for thread 1 is in sequence #2
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
/u01/app/oracle/oradata/prod/redo02.log
Log applied.
Media recovery complete.
SQL> alter database open resetlogs;
Database altered.
SQL> select name from v$datafile;
NAME
---------------------------------------------------
/u01/app/oracle/oradata/prod/system01.dbf
/u01/app/oracle/oradata/prod/sysaux01.dbf
/u01/app/oracle/oradata/prod/undotbs01.dbf
/u01/app/oracle/oradata/prod/users01.dbf
/u01/app/oracle/oradata/prod/test01.dbf
SQL> select count(*) from scott.test;
COUNT(*)
----------
100
SQL> select * from scott.emp;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- ---------- --------- ---------- ------------------- ---------- ---------- ----------
7369 SMITH CLERK 7902 1980-12-17 00:00:00 800 20
7499 ALLEN SALESMAN 7698 1981-02-20 00:00:00 1600 300 30
7521 WARD SALESMAN 7698 1981-02-22 00:00:00 1250 500 30
7566 JONES MANAGER 7839 1981-04-02 00:00:00 2975 20
7654 MARTIN SALESMAN 7698 1981-09-28 00:00:00 1250 1400 30
7698 BLAKE MANAGER 7839 1981-05-01 00:00:00 2850 30
7782 CLARK MANAGER 7839 1981-06-09 00:00:00 2450 10
7788 SCOTT ANALYST 7566 1987-04-19 00:00:00 3000 20
7839 KING PRESIDENT 1981-11-17 00:00:00 5000 10
7844 TURNER SALESMAN 7698 1981-09-08 00:00:00 1500 0 30
7876 ADAMS CLERK 7788 1987-05-23 00:00:00 1100 20
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- ---------- --------- ---------- ------------------- ---------- ---------- ----------
7900 JAMES CLERK 7698 1981-12-03 00:00:00 950 30
7902 FORD ANALYST 7566 1981-12-03 00:00:00 3000 20
7934 MILLER CLERK 7782 1982-01-23 00:00:00 1300 10
14 rows selected.
恢复成功，truncate表也恢复过来
时间： 2024-07-29 11:20:32