oracle 笔记5（Fundamentals II）
十二、User-Managed Complete Recovery
1、缺少联机重做日志文件
SQL>conn / as sysdba
Connected to an idle instance.
SQL>startup mount;
ORACLE instance started.
Total System Global Area 285212672 bytes
Fixed Size 1218992 bytes
Variable Size 130025040 bytes
Database Buffers 150994944 bytes
Redo Buffers 2973696 bytes
Database mounted.
SQL>recover database until cancel using backup controlfile;
ORA-00279: change 4898698 generated at 08/14/2011 17:11:18 needed for thread 1
ORA-00289: suggestion :
/home/oracle/flash_recovery_area/TS/archivelog/1_140_752533274.arc
ORA-00280: change 4898698 for thread 1 is in sequence #140
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
cancel
Media recovery cancelled.
SQL>alter database open resetlogs;
Database altered.
SQL>
2、Complete Recovery
3、Complete REcovery Methods
4、Open DB Recovery
5、Recovery without a Backup
(1)
6、Recovering Control Files
select file#,checkpoint_change# from v$datafile;
select file#,checkpoint_change# from v$datafile_header;
(2) Recovering Control Files
Methods to recover from loss of control file:
*Use the current control file
*Create a new control file
*Use a backup control file
SQL> shutdown abort;
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.
Total System Global Area 285212672 bytes
Fixed Size 1218992 bytes
Variable Size 155190864 bytes
Database Buffers 125829120 bytes
Redo Buffers 2973696 bytes
Database mounted.
SQL> select file#,checkpoint_change# from v$datafile;
FILE# CHECKPOINT_CHANGE#
---------- ------------------
1 5039725
2 5039725
3 5039725
4 5039725
5 5039725
6 5039725
7 5039725
8 5039725
9 5039725
9 rows selected.
SQL> select file#,checkpoint_change# from v$datafile_header;
FILE# CHECKPOINT_CHANGE#
---------- ------------------
1 5039725
2 5039725
3 5039725
4 5039725
5 5039725
6 5039725
7 5039725
8 5039725
9 5039725
9 rows selected.
SQL> alter database open;
alter database open
*
ERROR at line 1:
ORA-01589: must use RESETLOGS or NORESETLOGS option for database open
SQL> set recovery off;
SP2-0158: unknown SET option "recovery"
SQL> set recovery off;
SP2-0158: unknown SET option "recovery"
SQL> recover database using backup controlfile;
ORA-00279: change 5039725 generated at 08/15/2011 09:29:32 needed for thread 1
ORA-00289: suggestion :
/home/oracle/flash_recovery_area/TS/archivelog/1_164_752533274.arc
ORA-00280: change 5039725 for thread 1 is in sequence #164
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
/home/oracle/oradata/TS/redo01.log
ORA-00283: recovery session canceled due to errors
ORA-01244: unnamed datafile(s) added to control file by media recovery
ORA-01110: data file 10: '/home/oracle/oradata/TS/app3_01.dbf'
ORA-01112: media recovery not started
SQL> recover database using backup controlfile;
ORA-00283: recovery session canceled due to errors
ORA-01111: name for data file 10 is unknown - rename to correct file
ORA-01110: data file 10: '/home/oracle/db/dbs/UNNAMED00010'
ORA-01157: cannot identify/lock data file 10 - see DBWR trace file
ORA-01111: name for data file 10 is unknown - rename to correct file
ORA-01110: data file 10: '/home/oracle/db/dbs/UNNAMED00010'
SQL> col error for a18
SQL> select * from v$recover_file;
FILE# ONLINE ONLINE_ ERROR CHANGE# TIME
---------- ------- ------- ------------------ ---------- ---------
10 ONLINE ONLINE FILE MISSING 0
SQL> col name for a50
SQL> select file#,name from v$datafile;
FILE# NAME
---------- --------------------------------------------------
1 /home/oracle/oradata/TS/system01.dbf
2 /home/oracle/oradata/TS/undotbs01.dbf
3 /home/oracle/oradata/TS/sysaux01.dbf
4 /home/oracle/oradata/TS/users01.dbf
5 /home/oracle/oradata/TS/example01.dbf
6 /home/oracle/oradata/TS/mytbs.dbf
7 /home/oracle/oradata/TS/autostrace01.dbf
8 /home/oracle/oradata/TS/app1_01.dbf
9 /home/oracle/oradata/TS/app02_01.dbf
10 /home/oracle/db/dbs/UNNAMED00010
10 rows selected.
SQL> alter database rename file '/home/oracle/db/dbs/UNNAMED00010' to '/home/oracle/oradata/TS/app2_01.dbf';
alter database rename file '/home/oracle/db/dbs/UNNAMED00010' to '/home/oracle/oradata/TS/app2_01.dbf'
*
ERROR at line 1:
ORA-01511: error in renaming log/data files
ORA-01141: error renaming data file 10 - new file
'/home/oracle/oradata/TS/app2_01.dbf' not found
ORA-01111: name for data file 10 is unknown - rename to correct file
ORA-01110: data file 10: '/home/oracle/db/dbs/UNNAMED00010'
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3
SQL> alter database rename file '/home/oracle/db/dbs/UNNAMED00010' to '/home/oracle/oradata/TS/app3_01.dbf';
Database altered.
SQL> select file#,name from v$datafile;
FILE# NAME
---------- --------------------------------------------------
1 /home/oracle/oradata/TS/system01.dbf
2 /home/oracle/oradata/TS/undotbs01.dbf
3 /home/oracle/oradata/TS/sysaux01.dbf
4 /home/oracle/oradata/TS/users01.dbf
5 /home/oracle/oradata/TS/example01.dbf
6 /home/oracle/oradata/TS/mytbs.dbf
7 /home/oracle/oradata/TS/autostrace01.dbf
8 /home/oracle/oradata/TS/app1_01.dbf
9 /home/oracle/oradata/TS/app02_01.dbf
10 /home/oracle/oradata/TS/app3_01.dbf
10 rows selected.
SQL> recover database using backup controlfile untile cancel;
ORA-00905: missing keyword
SQL> recover database using backup controlfile until cancel;
ORA-00279: change 5040694 generated at 08/15/2011 09:37:30 needed for thread 1
ORA-00289: suggestion :
/home/oracle/flash_recovery_area/TS/archivelog/1_164_752533274.arc
ORA-00280: change 5040694 for thread 1 is in sequence #164
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
/home/oracle/oradata/TS/redo01.log
Log applied.
Media recovery complete.
SQL> alter database open resetlogs;
Database altered.
SQL> select * usr1.t4;
select * usr1.t4
*
ERROR at line 1:
ORA-00923: FROM keyword not found where expected
SQL> select * from usr1.t4;
ID NAME
---------- --------------------------------------------------
0 lin
SQL>