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标题:清除离线数据文件记录
作者:惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]
测试前提:数据文件离线,系统上删除了该文件,需要删除在数据字典中,关于这条离线数据文件记录
SQL> archive log list; Database log mode Archive Mode Automatic archival Enabled Archive destination /opt/oracle/oradata/test/archivelog Oldest online log sequence 210 Next log sequence to archive 212 Current log sequence 212 --数据库是归档模式 SQL> col file_name for a40 SQL> select file_id,file_name,bytes from dba_data_files order by 1; FILE_ID FILE_NAME BYTES ---------- ---------------------------------------- ---------- 1 /opt/oracle/oradata/test/system01.dbf 524288000 2 /opt/oracle/oradata/test/undotbs01.dbf 1289748480 3 /opt/oracle/oradata/test/sysaux01.dbf 377487360 4 /opt/oracle/oradata/test/users01.dbf 5242880 5 /opt/oracle/oradata/test/user32g.dbf 10485760 6 /opt/oracle/oradata/test/xifenfei01.dbf 20971520 7 /opt/oracle/oradata/test/user02.dbf 10485760 8 /opt/oracle/oradata/test/odu02.dbf 1.1283E+10 9 /opt/oracle/oradata/test/odu01.dbf 104857600 10 /opt/oracle/oradata/test/odu03.chf 10 rows selected. SQL> col error for a20 SQL> select file#,ONLINE_STATUS,ERROR,CHANGE# from V$RECOVER_FILE order by 1; FILE# ONLINE_ ERROR CHANGE# ---------- ------- -------------------- ---------- 10 OFFLINE FILE NOT FOUND 0 SQL> !ls /opt/oracle/oradata/test/odu03.chf ls: /opt/oracle/oradata/test/odu03.chf: No such file or directory --说明该数据文件已经从硬盘上删除 SQL> shutdown immediate Database closed. Database dismounted. ORACLE instance shut down. SQL> startup nomount ORACLE instance started. Total System Global Area 209715200 bytes Fixed Size 2082784 bytes Variable Size 130025504 bytes Database Buffers 71303168 bytes Redo Buffers 6303744 bytes SQL> CREATE CONTROLFILE REUSE DATABASE "TEST" NORESETLOGS ARCHIVELOG 2 MAXLOGFILES 16 3 MAXLOGMEMBERS 3 4 MAXDATAFILES 100 5 MAXINSTANCES 8 6 MAXLOGHISTORY 292 7 LOGFILE 8 GROUP 1 '/opt/oracle/oradata/test/redo01.log' SIZE 50M, 9 GROUP 2 '/opt/oracle/oradata/test/redo02.log' SIZE 50M, 10 GROUP 3 '/opt/oracle/oradata/test/redo03.log' SIZE 50M 11 DATAFILE 12 '/opt/oracle/oradata/test/system01.dbf', 13 '/opt/oracle/oradata/test/undotbs01.dbf', 14 '/opt/oracle/oradata/test/sysaux01.dbf', 15 '/opt/oracle/oradata/test/users01.dbf', 16 '/opt/oracle/oradata/test/user32g.dbf', 17 '/opt/oracle/oradata/test/xifenfei01.dbf', 18 '/opt/oracle/oradata/test/user02.dbf', 19 '/opt/oracle/oradata/test/odu02.dbf', 20 '/opt/oracle/oradata/test/odu01.dbf' ,'/opt/oracle/oradata/test/odu03.chf' --文件不存在,创建控制文件这条记录需要除掉 21 CHARACTER SET ZHS16GBK 22 ; Control file created. SQL> alter database open; Database altered. SQL> select file_id,file_name,bytes from dba_data_files order by 1; FILE_ID FILE_NAME BYTES ---------- ---------------------------------------- ---------- 1 /opt/oracle/oradata/test/system01.dbf 524288000 2 /opt/oracle/oradata/test/undotbs01.dbf 1289748480 3 /opt/oracle/oradata/test/sysaux01.dbf 377487360 4 /opt/oracle/oradata/test/users01.dbf 5242880 5 /opt/oracle/oradata/test/user32g.dbf 10485760 6 /opt/oracle/oradata/test/xifenfei01.dbf 20971520 7 /opt/oracle/oradata/test/user02.dbf 10485760 8 /opt/oracle/oradata/test/odu02.dbf 1.1283E+10 9 /opt/oracle/oradata/test/odu01.dbf 104857600 10 /opt/oracle/product/10.2.0/db_1/dbs/MISSING00010 --系统默认创建了自定义的数据文件名称 10 rows selected. SQL> select file#,ONLINE_STATUS,ERROR,CHANGE# from V$RECOVER_FILE order by 1; FILE# ONLINE_ ERROR CHANGE# ---------- ------- -------------------- ---------- 10 OFFLINE FILE MISSING 0 --提示该文件是离线状态,需要恢复,结果同开始时候状态 SQL> select file#,STATUS$,TS#,RELFILE# from file$ order by 1; FILE# STATUS$ TS# RELFILE# ---------- ---------- ---------- ---------- 1 2 0 1 2 2 1 2 3 2 2 3 4 2 4 4 5 2 4 5 6 2 6 6 7 2 4 7 8 2 7 9 9 2 7 6 10 2 7 10 11 1 11 rows selected. SQL> delete from file$ where file#=10; ---重要的就是这个操作 1 row deleted. SQL> select file#,STATUS$,TS#,RELFILE# from file$ order by 1; FILE# STATUS$ TS# RELFILE# ---------- ---------- ---------- ---------- 1 2 0 1 2 2 1 2 3 2 2 3 4 2 4 4 5 2 4 5 6 2 6 6 7 2 4 7 8 2 7 9 9 2 7 6 11 1 10 rows selected. SQL> col name for a40 SQL> select * from v$dbfile order by 1; FILE# NAME ---------- ---------------------------------------- 1 /opt/oracle/oradata/test/system01.dbf 2 /opt/oracle/oradata/test/undotbs01.dbf 3 /opt/oracle/oradata/test/sysaux01.dbf 4 /opt/oracle/oradata/test/users01.dbf 5 /opt/oracle/oradata/test/user32g.dbf 6 /opt/oracle/oradata/test/xifenfei01.dbf 7 /opt/oracle/oradata/test/user02.dbf 8 /opt/oracle/oradata/test/odu02.dbf 9 /opt/oracle/oradata/test/odu01.dbf 10 /opt/oracle/product/10.2.0/db_1/dbs/MISSING00010 10 rows selected. --需要重建控制文件,删除不存在的数据文件 SQL> shutdown immediate Database closed. Database dismounted. ORACLE instance shut down. SQL> STARTUP NOMOUNT ORACLE instance started. Total System Global Area 209715200 bytes Fixed Size 2082784 bytes Variable Size 130025504 bytes Database Buffers 71303168 bytes Redo Buffers 6303744 bytes SQL> CREATE CONTROLFILE REUSE DATABASE "TEST" NORESETLOGS ARCHIVELOG 2 MAXLOGFILES 16 3 MAXLOGMEMBERS 3 4 MAXDATAFILES 100 5 MAXINSTANCES 8 6 MAXLOGHISTORY 292 7 LOGFILE 8 GROUP 1 '/opt/oracle/oradata/test/redo01.log' SIZE 50M, 9 GROUP 2 '/opt/oracle/oradata/test/redo02.log' SIZE 50M, 10 GROUP 3 '/opt/oracle/oradata/test/redo03.log' SIZE 50M 11 DATAFILE 12 '/opt/oracle/oradata/test/system01.dbf', 13 '/opt/oracle/oradata/test/undotbs01.dbf', 14 '/opt/oracle/oradata/test/sysaux01.dbf', 15 '/opt/oracle/oradata/test/users01.dbf', 16 '/opt/oracle/oradata/test/user32g.dbf', 17 '/opt/oracle/oradata/test/xifenfei01.dbf', 18 '/opt/oracle/oradata/test/user02.dbf', 19 '/opt/oracle/oradata/test/odu02.dbf', 20 '/opt/oracle/oradata/test/odu01.dbf' 21 CHARACTER SET ZHS16GBK 22 ; Control file created. SQL> alter database open; Database altered. SQL> select file_id,file_name,bytes from dba_data_files order by 1; FILE_ID FILE_NAME BYTES ---------- ---------------------------------------- ---------- 1 /opt/oracle/oradata/test/system01.dbf 524288000 2 /opt/oracle/oradata/test/undotbs01.dbf 1289748480 3 /opt/oracle/oradata/test/sysaux01.dbf 377487360 4 /opt/oracle/oradata/test/users01.dbf 5242880 5 /opt/oracle/oradata/test/user32g.dbf 10485760 6 /opt/oracle/oradata/test/xifenfei01.dbf 20971520 7 /opt/oracle/oradata/test/user02.dbf 10485760 8 /opt/oracle/oradata/test/odu02.dbf 1.1283E+10 9 /opt/oracle/oradata/test/odu01.dbf 104857600 9 rows selected. SQL> select * from v$dbfile order by 1; FILE# NAME ---------- ---------------------------------------- 1 /opt/oracle/oradata/test/system01.dbf 2 /opt/oracle/oradata/test/undotbs01.dbf 3 /opt/oracle/oradata/test/sysaux01.dbf 4 /opt/oracle/oradata/test/users01.dbf 5 /opt/oracle/oradata/test/user32g.dbf 6 /opt/oracle/oradata/test/xifenfei01.dbf 7 /opt/oracle/oradata/test/user02.dbf 8 /opt/oracle/oradata/test/odu02.dbf 9 /opt/oracle/oradata/test/odu01.dbf 9 rows selected.
补充说明:非归档模式下,NOARCHIVELOG创建控制文件,其他无太大区别
测试来源:itpub:数据文件物理性删除相关问题疑惑?
参考blog:roger:如何彻底删除已经不存在的数据文件?
当然可以了
查询文件的状态,你可以对应到v$datafile里面的file$列,看看各个列的含义
select file#,STATUS$,TS#,RELFILE# from file$ order by 1;
这步在里面是什么意思?
看了博客内容,重建了两次控制文件,是否只建一次控制文件,在开始就进行删除操作