RMAN恢复案例之--不完全恢复错误案例RMAN恢复案例:不完全恢复,由于在先前的数据文件备份有误,导致恢复失败。[oracle@rh6~]$rmantarget/RecoveryManager:Relea
RMAN恢复案例之--不完全恢复错误案例
RMAN恢复案例:
不完全恢复,由于在先前的数据文件备份有误,导致恢复失败。
[oracle@rh6 ~]$ rman target / Recovery Manager: Release 11.2.0.1.0 - Production on Sat Sep 20 15:54:25 2014 Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved. connected to target database: TEST1 (DBID=1195893416) RMAN> run { 2> shutdown immediate; 3> startup mount; 4> set until time '2014-09-20 15:49:36'; 5> restore database; 6> recover database ; 7> alter database open resetlogs; 8> sql'alter system switch logfile'; 9> } using target database control file instead of recovery catalog database closed database dismounted Oracle instance shut down connected to target database (not started) Oracle instance started database mounted Total System Global Area 175767552 bytes Fixed Size 1335276 bytes Variable Size 142606356 bytes Database Buffers 29360128 bytes Redo Buffers 2465792 bytes executing command: SET until clause Starting restore at 20-SEP-14 allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=18 device type=DISK flashing back control file to SCN 9601534 channel ORA_DISK_1: starting datafile backup set restore channel ORA_DISK_1: specifying datafile(s) to restore from backup set channel ORA_DISK_1: restoring datafile 00002 to /u01/app/oracle/oradata/test1/sysaux01.dbf channel ORA_DISK_1: restoring datafile 00004 to /u01/app/oracle/oradata/test1/users01.dbf channel ORA_DISK_1: restoring datafile 00005 to /u01/app/oracle/oradata/test1/perfs.dbf channel ORA_DISK_1: restoring datafile 00007 to /u01/app/oracle/oradata/test1/undotbs2.dbf channel ORA_DISK_1: restoring datafile 00010 to /u01/app/oracle/oradata/test1/index01.dbf channel ORA_DISK_1: reading from backup piece /dsk1/backup/test1/TEST1_240.bak channel ORA_DISK_1: piece handle=/dsk1/backup/test1/TEST1_240.bak tag=TAG20140920T152720 channel ORA_DISK_1: restored backup piece 1 channel ORA_DISK_1: restore complete, elapsed time: 00:00:35 channel ORA_DISK_1: starting datafile backup set restore channel ORA_DISK_1: specifying datafile(s) to restore from backup set channel ORA_DISK_1: restoring datafile 00013 to /u01/app/oracle/oradata/test1/tbs_16.dbf channel ORA_DISK_1: reading from backup piece /dsk1/backup/test1/TEST1_241.bak channel ORA_DISK_1: piece handle=/dsk1/backup/test1/TEST1_241.bak tag=TAG20140920T152720 channel ORA_DISK_1: restored backup piece 1 channel ORA_DISK_1: restore complete, elapsed time: 00:00:01 channel ORA_DISK_1: starting datafile backup set restore channel ORA_DISK_1: specifying datafile(s) to restore from backup set channel ORA_DISK_1: restoring datafile 00001 to /u01/app/oracle/oradata/test1/system01.dbf channel ORA_DISK_1: restoring datafile 00003 to /u01/app/oracle/oradata/test1/test1.dbf channel ORA_DISK_1: restoring datafile 00006 to /u01/app/oracle/oradata/test1/dict1.dbf channel ORA_DISK_1: reading from backup piece /dsk1/backup/test1/TEST1_239.bak channel ORA_DISK_1: piece handle=/dsk1/backup/test1/TEST1_239.bak tag=TAG20140920T152720 channel ORA_DISK_1: restored backup piece 1 channel ORA_DISK_1: restore complete, elapsed time: 00:00:45 Finished restore at 20-SEP-14 Starting recover at 20-SEP-14 using channel ORA_DISK_1 starting media recoveryrecover 失败......
media recovery failed
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 09/20/2014 15:59:01
RMAN-20505: create datafile during recovery
RMAN-11003: failure during parse/execution of SQL statement: alter database recover if needed
start until time 'SEP 20 2014 15:49:36'
ORA-00283: recovery session canceled due to errors
ORA-01244: unnamed datafile(s) added to control file by media recovery
ORA-01110: data file 8: '/u01/app/oracle/oradata/test1/tbs2.dbf'
查看备份信息:

oracle asm指的是“自动存储管理”,是一种卷管理器,可自动管理磁盘组并提供有效的数据冗余功能;它是做为单独的Oracle实例实施和部署。asm的优势:1、配置简单、可最大化推动数据库合并的存储资源利用;2、支持BIGFILE文件等。

方法:1、利用“select*from user_indexes where table_name=表名”语句查询表中索引;2、利用“select*from all_indexes where table_name=表名”语句查询所有索引。

在oracle中,可以利用“TO_SINGLE_BYTE(String)”将全角转换为半角;“TO_SINGLE_BYTE”函数可以将参数中所有多字节字符都替换为等价的单字节字符,只有当数据库字符集同时包含多字节和单字节字符的时候有效。

在Oracle中,可利用lsnrctl命令查询端口号,该命令是Oracle的监听命令;在启动、关闭或重启oracle监听器之前可使用该命令检查oracle监听器的状态,语法为“lsnrctl status”,结果PORT后的内容就是端口号。

在oracle中,可以利用“drop sequence sequence名”来删除sequence;sequence是自动增加数字序列的意思,也就是序列号,序列号自动增加不能重置,因此需要利用drop sequence语句来删除序列。

在oracle中,可以利用“select ... From all_tab_columns where table_name=upper('表名') AND owner=upper('数据库登录用户名');”语句查询数据库表的数据类型。

方法:1、利用“LOWER(字段值)”将字段转为小写,或者利用“UPPER(字段值)”将字段转为大写;2、利用“REGEXP_LIKE(字符串,正则表达式,'i')”,当参数设置为“i”时,说明进行匹配不区分大小写。

方法:1、利用“alter system set sessions=修改后的数值 scope=spfile”语句修改session参数;2、修改参数之后利用“shutdown immediate – startup”语句重启服务器即可生效。


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