月归档:九月 2020

Oracle Recovery Tools解决ORA-00279 ORA-00289 ORA-00280故障

对于ORA-00279 ORA-00289 ORA-00280故障,一般是由于缺少日志(比如数据库非归档模式,或者归档日志丢失),导致某些文件无法正常online,对此Oracle Recovery Tool能够一键式快速解决.
模拟故障
非归档环境,模拟datafile 4 offline,然后多次切换日志,导致该文件无法正常online

SQL> select owner,segment_name from dba_segments where tablespace_name='USERS' AND OWNER='SYSTEM';

OWNER                          SEGMENT_NAME
------------------------------ ------------------------------
SYSTEM                         T_XIFENFEI

SQL> SELECT COUNT(1) FROM SYSTEM.T_XIFENFEI;

  COUNT(1)
----------
     87752

SQL> ALTER DATABASE DATAFILE 4 OFFLINE DROP;

Database altered.

SQL> ALTER SYSTEM SWITCH LOGFILE;

System altered.

SQL> /

System altered.

SQL> /

System altered.

SQL> /

System altered.

SQL> /

System altered.

SQL> archive log list;
Database log mode              No Archive Mode
Automatic archival             Disabled
Archive destination            D:\app\Administrator\product\11.2.0\dbhome_1\RDBMS
Oldest online log sequence     22
Current log sequence           24
SQL> select group#,status,sequence# from v$log;

    GROUP# STATUS            SEQUENCE#
---------- ---------------- ----------
         1 INACTIVE                 22
         2 INACTIVE                 23
         3 CURRENT                  24

SQL> RECOVER DATAFILE 4;
ORA-00279: change 1525881 generated at 09/06/2020 13:46:17 needed for thread 1
ORA-00289: suggestion :
D:\APP\ADMINISTRATOR\PRODUCT\11.2.0\DBHOME_1\RDBMS\ARC0000000019_1046476315.0001
ORA-00280: change 1525881 for thread 1 is in sequence #19


Specify log: {<RET>=suggested | filename | AUTO | CANCEL}

使用Oracle Recovery Tools快速修复
1


2

3

online文件成功

SQL> recover datafile 4;
Media recovery complete.
SQL> alter database datafile 4 online;

Database altered.

SQL> SELECT COUNT(1) FROM SYSTEM.T_XIFENFEI;

  COUNT(1)
----------
     87752

通过该工具就可以快速解决oracle丢失归档数据文件online的问题

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