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undo表空间文件丢失恢复（2）--无备份有redo的情况下恢复

2021-04-10 09:55:18 阅读：134 来源： 互联网

标签：03 recovery -- app undo 2015 oracle redo u03

undo表空间的数据文件丢失，如果没有备份的情况下，但是redo完好，这个时候可以这样恢复，下边给出一个例子。

undo表空间文件丢失恢复（1）--有备份的情况下恢复：http://blog.itpub.net/26736162/viewspace-1458654/

[oracle@rhel6_lhr ~]$ sqlplus / as sysdba

SQL*Plus: Release 10.2.0.4.0 - Production on Thu Mar 12 18:13:13 2015

Connected to:

Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production

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

SQL> select name from v$datafile;

NAME

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

/u03/app/oracle/oradata/ora1024g/system01.dbf

/u03/app/oracle/oradata/ora1024g/undotbs01.dbf

/u03/app/oracle/oradata/ora1024g/sysaux01.dbf

/u03/app/oracle/oradata/ora1024g/users01.dbf

/u03/app/oracle/oradata/ora1024g/example01.dbf

/u03/app/oracle/oradata/ora1024g/undotbs02.dbf

6 rows selected.

SQL> drop table bb;

Table dropped.

SQL> create table bb as select * from user_tables;

Table created.

SQL> insert into bb select * from user_tables;

707 rows created.

SQL> select count(1) from bb;

COUNT(1)

----------

1413

SQL>

SQL> ho rm /u03/app/oracle/oradata/ora1024g/undotbs01.dbf

SQL> shutdown abort;

ORACLE instance shut down.

SQL> startup;

ORACLE instance started.

Total System Global Area 448790528 bytes

Fixed Size 2084616 bytes

Variable Size 130023672 bytes

Database Buffers 310378496 bytes

Redo Buffers 6303744 bytes

Database mounted.

ORA-01157: cannot identify/lock data file 2 - see DBWR trace file

ORA-01110: data file 2: '/u03/app/oracle/oradata/ora1024g/undotbs01.dbf'

SQL> show parameter undo

NAME TYPE VALUE

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

undo_management string AUTO

undo_retention integer 900

undo_tablespace string UNDOTBS1

SQL>

SQL> set line 9999

SQL> col name format a100

SQL> select name,status,enabled from v$datafile;

NAME STATUS ENABLED

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

/u03/app/oracle/oradata/ora1024g/system01.dbf SYSTEM READ WRITE

/u03/app/oracle/oradata/ora1024g/undotbs01.dbf ONLINE READ WRITE

/u03/app/oracle/oradata/ora1024g/sysaux01.dbf ONLINE READ WRITE

/u03/app/oracle/oradata/ora1024g/users01.dbf ONLINE READ WRITE

/u03/app/oracle/oradata/ora1024g/example01.dbf ONLINE READ WRITE

/u03/app/oracle/oradata/ora1024g/undotbs02.dbf ONLINE READ WRITE

6 rows selected.

SQL> select * from v$recover_file;

FILE# ONLINE ONLINE_ ERROR CHANGE# TIME

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

3 OFFLINE OFFLINE FILE NOT FOUND 0

SQL> alter database create datafile 2 as '/u03/app/oracle/oradata/ora1024g/undotbs01.dbf' size 50m;

Database altered.

SQL> select * from v$recover_file;

FILE# ONLINE ONLINE_ ERROR CHANGE# TIME

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

2 ONLINE ONLINE 1278091 12-MAR-15

SQL> alter database open;

alter database open

ERROR at line 1:

ORA-01113: file 2 needs media recovery

ORA-01110: data file 2: '/u03/app/oracle/oradata/ora1024g/undotbs01.dbf'

SQL> select * from v$recover_file;

FILE# ONLINE ONLINE_ ERROR CHANGE# TIME

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

2 ONLINE ONLINE 1278091 12-MAR-15

SQL> recover datafile 2;

ORA-00279: change 1278091 generated at 03/12/2015 20:14:19 needed for thread 1

ORA-00289: suggestion : /u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_13/o1_mf_1_31_%u_.arc

ORA-00280: change 1278091 for thread 1 is in sequence #31

Specify log: {=suggested | filename | AUTO | CANCEL}

auto

ORA-00279: change 1299920 generated at 03/12/2015 20:32:01 needed for thread 1

ORA-00289: suggestion : /u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_13/o1_mf_1_32_%u_.arc

ORA-00280: change 1299920 for thread 1 is in sequence #32

ORA-00278: log file '/u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_12/o1_mf_1_31_bj31wg6x_.arc' no longer needed for this recovery

ORA-00279: change 1319924 generated at 03/12/2015 20:33:18 needed for thread 1

ORA-00289: suggestion : /u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_13/o1_mf_1_33_%u_.arc

ORA-00280: change 1319924 for thread 1 is in sequence #33

ORA-00278: log file '/u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_12/o1_mf_1_32_bj31wg77_.arc' no longer needed for this recovery

ORA-00279: change 1339928 generated at 03/12/2015 20:33:59 needed for thread 1

ORA-00289: suggestion : /u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_13/o1_mf_1_34_%u_.arc

ORA-00280: change 1339928 for thread 1 is in sequence #34

ORA-00278: log file '/u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_12/o1_mf_1_33_bj31xqc4_.arc' no longer needed for this recovery

ORA-00279: change 1359932 generated at 03/12/2015 20:35:20 needed for thread 1

ORA-00289: suggestion : /u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_13/o1_mf_1_35_%u_.arc

ORA-00280: change 1359932 for thread 1 is in sequence #35

ORA-00278: log file '/u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_12/o1_mf_1_34_bj3208q4_.arc' no longer needed for this recovery

ORA-00279: change 1379936 generated at 03/12/2015 20:36:20 needed for thread 1

ORA-00289: suggestion : /u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_13/o1_mf_1_36_%u_.arc

ORA-00280: change 1379936 for thread 1 is in sequence #36

ORA-00278: log file '/u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_12/o1_mf_1_35_bj3224vc_.arc' no longer needed for this recovery

ORA-00279: change 1399940 generated at 03/12/2015 20:37:20 needed for thread 1

ORA-00289: suggestion : /u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_13/o1_mf_1_37_%u_.arc

ORA-00280: change 1399940 for thread 1 is in sequence #37

ORA-00278: log file '/u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_12/o1_mf_1_36_bj32409g_.arc' no longer needed for this recovery

ORA-00279: change 1419945 generated at 03/12/2015 20:40:48 needed for thread 1

ORA-00289: suggestion : /u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_13/o1_mf_1_38_%u_.arc

ORA-00280: change 1419945 for thread 1 is in sequence #38

ORA-00278: log file '/u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_12/o1_mf_1_37_bj32bj52_.arc' no longer needed for this recovery

ORA-00279: change 1439949 generated at 03/12/2015 20:43:49 needed for thread 1

ORA-00289: suggestion : /u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_13/o1_mf_1_39_%u_.arc

ORA-00280: change 1439949 for thread 1 is in sequence #39

ORA-00278: log file '/u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_12/o1_mf_1_38_bj32j54p_.arc' no longer needed for this recovery

ORA-00279: change 1459953 generated at 03/12/2015 20:45:50 needed for thread 1

ORA-00289: suggestion : /u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_13/o1_mf_1_40_%u_.arc

ORA-00280: change 1459953 for thread 1 is in sequence #40

ORA-00278: log file '/u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_12/o1_mf_1_39_bj32mygp_.arc' no longer needed for this recovery

ORA-00279: change 1479957 generated at 03/12/2015 20:48:27 needed for thread 1

ORA-00289: suggestion : /u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_13/o1_mf_1_41_%u_.arc

ORA-00280: change 1479957 for thread 1 is in sequence #41

ORA-00278: log file '/u03/app/oracle/flash_recovery_area/ORA1024G/archivelog/2015_03_12/o1_mf_1_40_bj32rv2k_.arc' no longer needed for this recovery

Log applied.

Media recovery complete.

SQL> select name,status,enabled from v$datafile;

NAME STATUS ENABLED

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

/u03/app/oracle/oradata/ora1024g/system01.dbf SYSTEM READ WRITE

/u03/app/oracle/oradata/ora1024g/undotbs01.dbf ONLINE READ WRITE

/u03/app/oracle/oradata/ora1024g/sysaux01.dbf ONLINE READ WRITE

/u03/app/oracle/oradata/ora1024g/users01.dbf ONLINE READ WRITE

/u03/app/oracle/oradata/ora1024g/example01.dbf ONLINE READ WRITE

/u03/app/oracle/oradata/ora1024g/undotbs02.dbf ONLINE READ WRITE

6 rows selected.

SQL> select * from v$recover_file;

no rows selected

SQL> alter database open;

Database altered.

SQL> select count(1) from bb;

COUNT(1)

----------

706

标签：03,recovery,--,app,undo,2015,oracle,redo,u03
来源： https://blog.51cto.com/lhrbest/2696474

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undo表空间文件丢失恢复（2）--无备份有redo的情况下恢复