如何刪除回滾段狀態爲NEEDS RECOVERY的undo表空間
環境：RHEL 6.4 + Oracle 11.2.0.4
背景：備份恢復的測試庫在一次不徹底恢復後，沒有來及作有效的全備，又一次數據庫故障致使數據庫沒法正常open。
只能離線部分數據文件打開數據庫，其中包含undo表空間數據文件。
適用場景：無有效備份，能夠丟失數據，刪除回滾段狀態爲NEEDS RECOVERY的undo表空間。數據庫
1、數據庫當前狀況oracle
2、刪除損壞數據文件所在表空間測試
1、數據庫當前狀況
1.1 故障現象
open resetlogs 打開數據庫報錯ORA-01152，ORA-01110，將報錯的數據文件offline，先打開數據庫。this
SQL> alter database open resetlogs; alter database open resetlogs * ERROR at line 1: ORA-01152: file 3 was not restored from a sufficiently old backup ORA-01110: data file 3: '/u02/oracle/JINGYU/datafile/o1_mf_undotbs1_bwp19o3n_.dbf' SQL> alter database datafile 3 offline; Database altered. SQL> alter database open resetlogs; alter database open resetlogs * ERROR at line 1: ORA-01152: file 4 was not restored from a sufficiently old backup ORA-01110: data file 4: '/u02/oracle/JINGYU/datafile/o1_mf_users_bwp1b12d_.dbf' SQL> alter database datafile 4 offline; Database altered. SQL> alter database open resetlogs; Database altered.
1.2 查看數據文件的狀態
數據文件3，4OFFLINE。其中數據文件3是undo表空間的數據文件。spa
SQL> set linesize 150
SQL> col file_name for a56
SQL> select FILE_ID, FILE_NAME, TABLESPACE_NAME, BYTES/1024/1024 "MB", MAXBYTES/1024/1024/1024 "GB", AUTOEXTENSIBLE, STATUS, ONLINE_STATUS from dba_data_files;
FILE_ID FILE_NAME TABLESPACE_NAME MB GB AUT STATUS ONLINE_
---------- -------------------------------------------------------- ------------------------------ ---------- ---------- --- --------- -------
1 /u02/oracle/JINGYU/datafile/o1_mf_system_bwp198r7_.dbf SYSTEM 700 31.9999847 YES AVAILABLE SYSTEM
2 /u02/oracle/JINGYU/datafile/o1_mf_sysaux_bwp19hl8_.dbf SYSAUX 600 31.9999847 YES AVAILABLE ONLINE
3 /u02/oracle/JINGYU/datafile/o1_mf_undotbs1_bwp19o3n_.dbf UNDOTBS1 AVAILABLE OFFLINE
4 /u02/oracle/JINGYU/datafile/o1_mf_users_bwp1b12d_.dbf USERS AVAILABLE OFFLINE
5 /u02/oracle/JINGYU/datafile/o1_mf_dbs_d_ji_bwp4r7cm_.dbf DBS_D_JINGYU 100 31.9999847 YES AVAILABLE ONLINE
1.3 嘗試online數據文件失敗
SQL> alter database datafile 3 online; alter database datafile 3 online * ERROR at line 1: ORA-01190: control file or data file 3 is from before the last RESETLOGS ORA-01110: data file 3: '/u02/oracle/JINGYU/datafile/o1_mf_undotbs1_bwp19o3n_.dbf' SQL> alter database datafile 4 online; alter database datafile 4 online * ERROR at line 1: ORA-01190: control file or data file 4 is from before the last RESETLOGS ORA-01110: data file 4: '/u02/oracle/JINGYU/datafile/o1_mf_users_bwp1b12d_.dbf'
2、刪除損壞數據文件所在表空間
2.1 普通數據文件4所在的users表空間能夠直接刪除
SQL> drop tablespace users including contents and datafiles;
drop tablespace users including contents and datafiles
*
ERROR at line 1:
ORA-12919: Can not drop the default permanent tablespace
SQL> alter database default tablespace DBS_D_JINGYU;
Database altered.
SQL> drop tablespace users including contents and datafiles;
Tablespace dropped.
SQL> select FILE_ID, FILE_NAME, TABLESPACE_NAME, BYTES/1024/1024 "MB", MAXBYTES/1024/1024/1024 "GB", AUTOEXTENSIBLE, STATUS, ONLINE_STATUS from dba_data_files;
FILE_ID FILE_NAME TABLESPACE_NAME MB GB AUT STATUS ONLINE_
---------- -------------------------------------------------------- ------------------------------ ---------- ---------- --- --------- -------
1 /u02/oracle/JINGYU/datafile/o1_mf_system_bwp198r7_.dbf SYSTEM 700 31.9999847 YES AVAILABLE SYSTEM
2 /u02/oracle/JINGYU/datafile/o1_mf_sysaux_bwp19hl8_.dbf SYSAUX 600 31.9999847 YES AVAILABLE ONLINE
3 /u02/oracle/JINGYU/datafile/o1_mf_undotbs1_bwp19o3n_.dbf UNDOTBS1 AVAILABLE OFFLINE
5 /u02/oracle/JINGYU/datafile/o1_mf_dbs_d_ji_bwp4r7cm_.dbf DBS_D_JINGYU 100 31.9999847 YES AVAILABLE ONLINE
2.2 undo數據文件3所在的undotbs1表空間嘗試刪除
嘗試刪除直接報錯ORA-01548.同時沒法正常關閉數據庫，沒法刪除活動的回滾段。具體以下：rest
2.2.1 建立新的undo表空間undotbs2並設置爲默認的undo表空間
SQL> create undo tablespace undotbs2; Tablespace created. SQL> show parameter undo NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ undo_management string AUTO undo_retention integer 900 undo_tablespace string UNDOTBS1 SQL> alter system set undo_tablespace='undotbs2'; System altered. SQL> show parameter undo NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ undo_management string AUTO undo_retention integer 900 undo_tablespace string undotbs2
2.2.2 刪除舊的undotbs1表空間失敗
SQL> drop tablespace undotbs1 including contents and datafiles; drop tablespace undotbs1 including contents and datafiles * ERROR at line 1: ORA-01548: active rollback segment '_SYSSMU1_1401565358$' found, terminate dropping tablespace
2.2.3 查看回滾段的狀態，肯定undotbs1表空間的回滾段狀態都是NEEDS RECOVERY
SQL> select segment_id, segment_name,status,tablespace_name from dba_rollback_segs where status not in ('ONLINE','OFFLINE');
SEGMENT_ID SEGMENT_NAME STATUS TABLESPACE_NAME
---------- ------------------------------ ---------------- ------------------------------
1 _SYSSMU1_1401565358$ NEEDS RECOVERY UNDOTBS1
2 _SYSSMU2_3125365238$ NEEDS RECOVERY UNDOTBS1
3 _SYSSMU3_1538315859$ NEEDS RECOVERY UNDOTBS1
4 _SYSSMU4_1640924022$ NEEDS RECOVERY UNDOTBS1
5 _SYSSMU5_2892967416$ NEEDS RECOVERY UNDOTBS1
6 _SYSSMU6_3276341082$ NEEDS RECOVERY UNDOTBS1
7 _SYSSMU7_387283697$ NEEDS RECOVERY UNDOTBS1
8 _SYSSMU8_2299136685$ NEEDS RECOVERY UNDOTBS1
9 _SYSSMU9_909303715$ NEEDS RECOVERY UNDOTBS1
10 _SYSSMU10_1695440836$ NEEDS RECOVERY UNDOTBS1
10 rows selected.
2.2.4 此時正常關庫會提示失敗
SQL> select file#,status from v$datafile;
FILE# STATUS
---------- -------
1 SYSTEM
2 ONLINE
3 OFFLINE
4 ONLINE
5 ONLINE
SQL> shutdown immediate;
ORA-00376: file 3 cannot be read at this time
ORA-01110: data file 3: '/u02/oracle/JINGYU/datafile/o1_mf_undotbs1_bwp19o3n_.dbf'
2.2.5 此時刪除回滾段也會提示失敗
目前數據庫無有效備份，須要把這些NEEDS RECOVERY的undo rollback segs刪除code
SQL> drop rollback segment "_SYSSMU10_1695440836$"; drop rollback segment "_SYSSMU10_1695440836$" * ERROR at line 1: ORA-30025: DROP segment '_SYSSMU10_1695440836$' (in undo tablespace) not allowed
2.3 undo數據文件3所在的undotbs1表空間刪除方法
2.3.1 修改pfile文件這幾行內容
其中_offline_rollback_segments參數中的回滾段的名字在上面查到過。ci
*.undo_management='MANUAL' *._offline_rollback_segments=(_SYSSMU1_1401565358$,_SYSSMU2_3125365238$,_SYSSMU3_1538315859$,_SYSSMU4_1640924022$,_SYSSMU5_2892967416$,_SYSSMU6_3276341082$,_SYSSMU7_387283697$,_SYSSMU8_2299136685$,_SYSSMU9_909303715$,_SYSSMU10_1695440836$) #*.undo_tablespace='undotbs2'
2.3.2 使用pfile文件啓動數據庫
SQL> startup pfile='/tmp/pfile.ora'; ORACLE instance started. Total System Global Area 1620115456 bytes Fixed Size 2253704 bytes Variable Size 989858936 bytes Database Buffers 620756992 bytes Redo Buffers 7245824 bytes Database mounted. Database opened.
2.3.3 刪除回滾段成功
SQL> drop rollback segment "_SYSSMU10_1695440836$"; Rollback segment dropped.
2.3.4 刪除回滾表空間undotbs1成功
SQL> drop tablespace undotbs1 including contents and datafiles; Tablespace dropped.
2.3.5 此時查詢數據庫的相關信息
SQL> select segment_id, segment_name,status,tablespace_name from dba_rollback_segs where status not in ('ONLINE','OFFLINE')
2 ;
no rows selected
SQL> select FILE_ID, FILE_NAME, TABLESPACE_NAME, BYTES/1024/1024 "MB", MAXBYTES/1024/1024/1024 "GB", AUTOEXTENSIBLE, STATUS, ONLINE_STATUS from dba_data_files;
FILE_ID FILE_NAME TABLESPACE_NAME MB GB AUT STATUS ONLINE_
---------- -------------------------------------------------------- ------------------------------ ---------- ---------- --- --------- -------
1 /u02/oracle/JINGYU/datafile/o1_mf_system_bwp198r7_.dbf SYSTEM 700 31.9999847 YES AVAILABLE SYSTEM
2 /u02/oracle/JINGYU/datafile/o1_mf_sysaux_bwp19hl8_.dbf SYSAUX 600 31.9999847 YES AVAILABLE ONLINE
4 /u02/oracle/JINGYU/datafile/o1_mf_undotbs2_bwqxbnxo_.dbf UNDOTBS2 100 31.9999847 YES AVAILABLE ONLINE
5 /u02/oracle/JINGYU/datafile/o1_mf_dbs_d_ji_bwp4r7cm_.dbf DBS_D_JINGYU 100 31.9999847 YES AVAILABLE ONLINE
發現此時一切數據文件正常,此時已經能夠正常關庫
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
2.3.6 以spfile正常啓動數據庫，檢查一切正常
SQL> startup
ORACLE instance started.
Total System Global Area 1620115456 bytes
Fixed Size 2253704 bytes
Variable Size 989858936 bytes
Database Buffers 620756992 bytes
Redo Buffers 7245824 bytes
Database mounted.
Database opened.
SQL> show parameter undo
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
undo_management string AUTO
undo_retention integer 900
undo_tablespace string undotbs2
SQL> set linesize 150
SQL> col file_name for a56
SQL> select FILE_ID, FILE_NAME, TABLESPACE_NAME, BYTES/1024/1024 "MB", MAXBYTES/1024/1024/1024 "GB", AUTOEXTENSIBLE, STATUS, ONLINE_STATUS from dba_data_files;
FILE_ID FILE_NAME TABLESPACE_NAME MB GB AUT STATUS ONLINE_
---------- -------------------------------------------------------- ------------------------------ ---------- ---------- --- --------- -------
1 /u02/oracle/JINGYU/datafile/o1_mf_system_bwp198r7_.dbf SYSTEM 700 31.9999847 YES AVAILABLE SYSTEM
2 /u02/oracle/JINGYU/datafile/o1_mf_sysaux_bwp19hl8_.dbf SYSAUX 600 31.9999847 YES AVAILABLE ONLINE
4 /u02/oracle/JINGYU/datafile/o1_mf_undotbs2_bwqxbnxo_.dbf UNDOTBS2 100 31.9999847 YES AVAILABLE ONLINE
5 /u02/oracle/JINGYU/datafile/o1_mf_dbs_d_ji_bwp4r7cm_.dbf DBS_D_JINGYU 100 31.9999847 YES AVAILABLE ONLINE
最後，當即對當前恢復好的數據庫作一個全備吧。string
相關文章
- 1. [Oracle]理解undo表空間
- 2. Oracle-UNDO表空間解讀
- 3. UNDO表空間的作用和管理
- 4. oracle切換undo表空間
- 5. Oracle UNDO表空間的管理
- 6. 刪除表空間
- 7. UNDO表空間的ORA-01110錯誤解決（二）
- 8. 10.管理UNDO表空間.(筆記)
- 9. Oracle重建Undo表空間
- 10. 刪除UNDO表空間並處理ORA-01548問題
- 更多相關文章...
- • SQLite 刪除表 - SQLite教程
- • HTTP狀態碼 - HTTP 教程
- • 算法總結-回溯法
- • 漫談MySQL的鎖機制
相關標籤/搜索
每日一句
-
每一个你不满意的现在，都有一个你没有努力的曾经。
最新文章
- 1. Appium入門
- 2. Spring WebFlux 源碼分析(2)-Netty 服務器啓動服務流程 --TBD
- 3. wxpython入門第六步（高級組件）
- 4. CentOS7.5安裝SVN和可視化管理工具iF.SVNAdmin
- 5. jedis 3.0.1中JedisPoolConfig對象缺少setMaxIdle、setMaxWaitMillis等方法，問題記錄
- 6. 一步一圖一代碼，一定要讓你真正徹底明白紅黑樹
- 7. 2018-04-12—（重點）源碼角度分析Handler運行原理
- 8. Spring AOP源碼詳細解析
- 9. Spring Cloud（1）
- 10. python簡單爬去油價信息發送到公衆號
歡迎關注本站公眾號,獲取更多信息
相關文章