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标签归档:bbed online文件
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.参考:Oracle Recovery Tools—202008
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}
![2](https://www.xifenfei.com/wp-content/uploads/2020/09/2.png)
![3](https://www.xifenfei.com/wp-content/uploads/2020/09/3.png)
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
软件下载:OraRecovery下载
使用说明:使用说明