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标签归档:断电oracle恢复
断电引起的oracle数据库异常恢复
服务器断电,数据库mount失败
SQL> startup mount pfile='d:/pfile.txt' ORACLE 例程已经启动。 Total System Global Area 1185853440 bytes Fixed Size 2175168 bytes Variable Size 335548224 bytes Database Buffers 838860800 bytes Redo Buffers 9269248 bytes ORA-00205: ?????????, ??????, ???????
alert日志报错信息
Sun Mar 19 20:18:29 2023 ALTER DATABASE MOUNT Errors in file d:\app\xifenfei\diag\rdbms\orcl\orcl\trace\orcl_ckpt_15064.trc (incident=3697): ORA-00227: ????????????: (? 1, # ? 1) ORA-00202: ????: ''D:\BAIDUNETDISKDOWNLOAD\ORCL\CONTROL01.CTL'' Incident details in: d:\app\xifenfei\diag\rdbms\orcl\orcl\incident\incdir_3697\orcl_ckpt_15064_i3697.trc Sun Mar 19 20:18:30 2023 Errors in file d:\app\xifenfei\diag\rdbms\orcl\orcl\trace\orcl_m000_18084.trc (incident=3761): ORA-00227: ????????????: (? 1, # ? 1) ORA-00202: ????: ''D:\BAIDUNETDISKDOWNLOAD\ORCL\CONTROL01.CTL'' Incident details in: d:\app\xifenfei\diag\rdbms\orcl\orcl\incident\incdir_3761\orcl_m000_18084_i3761.trc Sun Mar 19 20:18:29 2023 MMNL started with pid=16, OS id=9404 ORA-00227: ????????????: (? 1, # ? 1) ORA-00202: ????: ''D:\BAIDUNETDISKDOWNLOAD\ORCL\CONTROL01.CTL'' Checker run found 1 new persistent data failures Trace dumping is performing id=[cdmp_20230319201831] ORA-205 signalled during: ALTER DATABASE MOUNT...
错误比较明显由于控制文件的block损坏导致数据库在mount的时候提示ORA-00205,重试重建ctl
SQL> CREATE CONTROLFILE REUSE DATABASE "orcl" NORESETLOGS NOARCHIVELOG 2 MAXLOGFILES 50 3 MAXLOGMEMBERS 5 4 MAXDATAFILES 100 5 MAXINSTANCES 8 6 MAXLOGHISTORY 226 7 LOGFILE 8 GROUP 1 'D:\BaiduNetdiskDownload\orcl/redo01.log' SIZE 50M, 9 GROUP 2 'D:\BaiduNetdiskDownload\orcl/redo02.log' SIZE 50M, 10 GROUP 3 'D:\BaiduNetdiskDownload\orcl/redo03.log' SIZE 50M 11 DATAFILE 12 'D:\BaiduNetdiskDownload\orcl\EXAMPLE01.DBF', 13 'D:\BaiduNetdiskDownload\orcl\GHZN.DBF', 14 'D:\BaiduNetdiskDownload\orcl\GHZN2.DBF', 15 'D:\BaiduNetdiskDownload\orcl\SYSAUX01.DBF', 16 'D:\BaiduNetdiskDownload\orcl\SYSTEM01.DBF', 17 'D:\BaiduNetdiskDownload\orcl\UNDOTBS01.DBF', 18 'D:\BaiduNetdiskDownload\orcl\USERS01.DBF' 19 CHARACTER SET ZHS16GBK 20 ; CREATE CONTROLFILE REUSE DATABASE "orcl" NORESETLOGS NOARCHIVELOG * ERROR at line 1: ORA-01503: CREATE CONTROLFILE failed ORA-01565: error in identifying file 'D:\BaiduNetdiskDownload\orcl\UNDOTBS01.DBF' ORA-27041: unable to open file OSD-04001: 逻辑块大小无效 (OS 2613931212)
由于undo文件异常(大小不是block size的整数倍),因此报OSD-04001: 逻辑块大小无效错误.对undo文件及其其他文件进行检查发现数据库文件有不少坏块,而且undo文件的文件头损坏
通过抛弃undo文件并进行一些处理,重建ctl成功,并且recover 数据库成功,顺利open数据库
SQL> CREATE CONTROLFILE REUSE DATABASE "orcl" NORESETLOGS NOARCHIVELOG 2 MAXLOGFILES 50 3 MAXLOGMEMBERS 5 4 MAXDATAFILES 100 5 MAXINSTANCES 8 6 MAXLOGHISTORY 226 7 LOGFILE 8 GROUP 1 'D:\BaiduNetdiskDownload\orcl/redo01.log' SIZE 50M, 9 GROUP 2 'D:\BaiduNetdiskDownload\orcl/redo02.log' SIZE 50M, 10 GROUP 3 'D:\BaiduNetdiskDownload\orcl/redo03.log' SIZE 50M 11 DATAFILE 12 'D:\BaiduNetdiskDownload\orcl\EXAMPLE01.DBF', 13 'D:\BaiduNetdiskDownload\orcl\GHZN.DBF', 14 'D:\BaiduNetdiskDownload\orcl\GHZN2.DBF', 15 'D:\BaiduNetdiskDownload\orcl\SYSAUX01.DBF', 16 'D:\BaiduNetdiskDownload\orcl\SYSTEM01.DBF', 17 'D:\BaiduNetdiskDownload\orcl\USERS01.DBF' 18 CHARACTER SET ZHS16GBK 19 ; Control file created. SQL> recover database; Media recovery complete. SQL> shutdown immediate; ORA-01109: database not open Database dismounted. ORACLE instance shut down. SQL> startup mount pfile='d:/pfile.txt' ORACLE instance started. Total System Global Area 1185853440 bytes Fixed Size 2175168 bytes Variable Size 335548224 bytes Database Buffers 838860800 bytes Redo Buffers 9269248 bytes Database mounted. SQL> alter database open; Database altered.
然后使用逻辑方式导出数据,运气不错业务文件没有任何坏块,system坏块在aud$上,无任何业务数据丢失.