Oracle非归档模式MediaRecovery错误之--ORA-26040系统环境：操作系统：LinuxRH55Oracle：Oracle11gR2模拟案例：1、查看数据库模式18:12:36SYS@prodarchiveloglis
oracle非归档模式media recovery错误之--ora-26040
系统环境：
操作系统：Linux RH55
Oracle： Oracle 11gR2
模拟案例：
1、查看数据库模式
18:12:36 SYS@ prod>archive log list;
Database log mode No Archive Mode
Automatic archival Disabled
Archive destination /dsk4/arch1
Oldest online log sequence 1
Current log sequence 3
2、创建新的Tablespace
18:13:19 SYS@ prod>create tablespace tbs2 18:13:30 2 datafile '/u01/app/oracle/oradata/prod/tbs2.dbf' size 10m; Tablespace created.3、对数据库进行冷备
[oracle@rh6 ~]$ rman target / Recovery Manager: Release 11.2.0.1.0 - Production on Thu Jul 24 18:14:30 2014 Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved. connected to target database: PROD (DBID=239333010) RMAN> run { 2> shutdown immediate; 3> startup mount; 4> backup database format '/dsk3/bak/%s_%d.bak'; 5> alter database open; 6> }4、备份完成在新的Tablesapce上创建Object
18:19:40 SYS@ prod>conn scott/tiger Connected. 18:30:13 SCOTT@ prod>create table t1 tablespace tbs2 as select * from emp; Table created. Elapsed: 00:00:01.00 18:30:45 SCOTT@ prod>select count(*) from t1; COUNT(*) ---------- 14 Elapsed: 00:00:00.02 18:30:56 SCOTT@ prod>insert into t1 select * from t1 where rownum=1; 1 row created. Elapsed: 00:00:00.02 18:31:16 SCOTT@ prod>commit; Commit complete. Elapsed: 00:00:00.04 18:31:18 SCOTT@ prod>insert into t1 select * from t1 where rownum=1; 1 row created. Elapsed: 00:00:00.01 18:31:23 SCOTT@ prod>select count(*) from t1; COUNT(*) ---------- 16
5、查看Redo Log信息
18:32:14 SYS@ prod>select group#,sequence# ,status from v$log; GROUP# SEQUENCE# STATUS ---------- ---------- ---------------- 1 4 CURRENT 2 2 INACTIVE 3 3 INACTIVE Elapsed: 00:00:00.056、模拟数据文件被破坏
[oracle@rh6 ~]$ rm /u01/app/oracle/oradata/prod/tbs2.dbf
18:32:28 SYS@ prod>shutdown abort
ORACLE instance shut down.
重新启动Instance到mount，查看redo log，日志没有发生switch
18:33:06 SYS@ prod>startup mount; ORACLE instance started. Total System Global Area 835104768 bytes Fixed Size 2217952 bytes Variable Size 775948320 bytes Database Buffers 54525952 bytes Redo Buffers 2412544 bytes Database mounted. 18:33:42 SYS@ prod>select group#,sequence# ,status from v$log; GROUP# SEQUENCE# STATUS ---------- ---------- ---------------- 1 4 CURRENT 3 3 INACTIVE 2 2 INACTIVEOpen database出现数据文件丢失错误：
18:34:17 SYS@ prod>alter database open;
alter database open
*
ERROR at line 1:
ORA-01157: cannot identify/lock data file 9 - see DBWR trace file
ORA-01110: data file 9: '/u01/app/oracle/oradata/prod/tbs2.dbf'
