环境： rhel 5.5,Oracle10.2.0.1 xmanager4.0 通过备份控制文件后，对数据库进行一系列的操作，关闭数据库；恢复控制文件，启动到
环境：
rhel 5.5,Oracle10.2.0.1
xmanager4.0
通过备份控制文件后，对数据库进行一系列的操作，关闭数据库；恢复控制文件，启动到mount阶段在使用resetlogs重新创建控制文件，找回我们的数据。
备份控制文件
backupdatafile 1;
RMAN>backup datafile 1;
RMAN>backup datafile 1;
Startingbackup at 26-JUN-12
usingchannel ORA_DISK_1
channelORA_DISK_1: starting compressed full datafile backupset
channelORA_DISK_1: specifying datafile(s) in backupset
inputdatafile fno=00001 name=/opt/oracle/product/10.2.0/oradata/cuug/system01.dbf
channelORA_DISK_1: starting piece 1 at 26-JUN-12
channelORA_DISK_1: finished piece 1 at 26-JUN-12
piecehandle=/opt/oracle/product/10.2.0/flash_recovery_area/CUUG/backupset/2012_06_26/o1_mf_nnndf_TAG20120626T114501_7yld1y1q_.bkptag=TAG20120626T114501 comment=NONE
channelORA_DISK_1: backup set complete, elapsed time: 00:08:06
channelORA_DISK_1: throttle time: 0:06:39
Finishedbackup at 26-JUN-12
StartingControl File Autobackup at 26-JUN-12
piecehandle=/opt/oracle/product/10.2.0/flash_recovery_area/CUUG/autobackup/2012_06_26/o1_mf_n_786973989_7yldk6mm_.bkpcomment=NONE
FinishedControl File Autobackup at 26-JUN-12
做一些操作和日志切换
SQL>select group#,sequence#,status from v$log;
GROUP# SEQUENCE# STATUS
-------------------- ----------------
1 9 INACTIVE
2 10 CURRENT
3 7 INACTIVE
4 8 INACTIVE
[oracle@rhel5cuug]$ cp cuug01.dbf cuug01.dbf_bak
SQL>select username,default_tablespace from dba_users where username='SCOTT';
USERNAME DEFAULT_TABLESPACE
------------------------------------------------------------
SCOTT CUUG
SQL>create table scott.a as select * from tab;
Tablecreated.
SQL>create table scott.aa as select * fromtab;
SQL>select count(*) from scott.a;
COUNT(*)
----------
3642
SQL>create tablespace test datafile'/opt/oracle/product/10.2.0/oradata/cuug/test01.dbf' size 100m;
Tablespacecreated.
Tablespacecreated.
SQL>alter system switch logfile;
Systemaltered.
SQL>select file_name from dba_data_files;
FILE_NAME
--------------------------------------------------------------------------------
/opt/oracle/product/10.2.0/oradata/cuug/cuug01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/rmans01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/users01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/sysaux01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/undotbs01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/system01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/test01.dbf
SQL>select group#,status,sequence# from v$log;
GROUP#STATUS SEQUENCE#
-------------------------- ----------
1INACTIVE 9
2CURRENT 10
3INACTIVE 7
4INACTIVE 8
SQL>shutdown abort
ORACLEinstance shut down.
删除控制文件，修改cuug的数据文件
[oracle@rhel5cuug]$ mkdir bak
[oracle@rhel5cuug]$ mv *.ctl bak/
[oracle@rhel5cuug]$ mv cuug01.dbf cuug01.bak
SQL>startup
ORACLEinstance started.
TotalSystem Global Area 218103808 bytes
FixedSize 1218604 bytes
VariableSize 62916564 bytes
DatabaseBuffers 150994944 bytes
RedoBuffers 2973696 bytes
ORA-00205:error in identifying control file, check alert log for more info
恢复控制文件
[oracle@rhel510.2.0]$ rman target /
RecoveryManager: Release 10.2.0.1.0 - Production on Mon Jun 25 10:26:22 2012
Copyright(c) 1982, 2005, Oracle. All rightsreserved.
connectedto target database: orcl (not mounted)
RMAN>restore controlfile from'/opt/oracle/product/10.2.0/flash_recovery_area/CUUG/autobackup/2012_06_26/o1_mf_n_786973989_7yldk6mm_.bkp';
Startingrestore at 26-JUN-12
usingchannel ORA_DISK_1
channelORA_DISK_1: restoring control file
channelORA_DISK_1: restore complete, elapsed time: 00:00:03
outputfilename=/opt/oracle/product/10.2.0/oradata/cuug/control01.ctl
outputfilename=/opt/oracle/product/10.2.0/oradata/cuug/control02.ctl
outputfilename=/opt/oracle/product/10.2.0/oradata/cuug/control03.ctl
Finishedrestore at 26-JUN-12
把控制文件
标记trace文件
SQL>alter session set tracefile_identifier='cuug';
Sessionaltered.
SQL>alter database mount;
Databasealtered.
SQL>alter database backup controlfile to trace;
Databasealtered.
重建控制文件，先关闭数据库，删除之前从备份中恢复出来的控制文件，启动到nomount阶段
SQL>shutdown immediate
ORA-01109:database not open
Databasedismounted.
ORACLEinstance shut down.
SQL>startup nomount;
ORACLEinstance started.
TotalSystem Global Area 218103808 bytes
FixedSize 1218604 bytes
VariableSize 79693780 bytes
DatabaseBuffers 134217728 bytes
RedoBuffers 2973696 bytes
使用noresetlogs创建，因为联机日志还在，所以可以使用noresetlogs的方法创建
[oracle@rhel5orcl]$ ls *.ctl
control01.ctl control02.ctl control03.ctl
[oracle@rhel5orcl]$ rm *.ctl
[oracle@rhel5udump]$ vi cuug_ora_4744_cuug.trc
CREATECONTROLFILE REUSE DATABASE "ORCL" NORESETLOGS ARCHIVELOG
MAXLOGFILES16
MAXLOGMEMBERS3
MAXDATAFILES100
MAXINSTANCES8
MAXLOGHISTORY292
LOGFILE
GROUP 1'/opt/oracle/product/10.2.0/oradata/orcl/redo01.log' SIZE 50M,
GROUP 2'/opt/oracle/product/10.2.0/oradata/orcl/redo02.log' SIZE 50M,
GROUP 3'/opt/oracle/product/10.2.0/oradata/orcl/redo03.log' SIZE 50M,
GROUP 4'/opt/oracle/product/10.2.0/oradata/orcl/redo04.log' SIZE 50M
--STANDBY LOGFILE
DATAFILE
'/opt/oracle/product/10.2.0/oradata/orcl/system01.dbf',
'/opt/oracle/product/10.2.0/oradata/orcl/undotbs01.dbf',
'/opt/oracle/product/10.2.0/oradata/orcl/sysaux01.dbf',
'/opt/oracle/product/10.2.0/oradata/orcl/users01.dbf',
'/opt/oracle/product/10.2.0/oradata/orcl/rmans01.dbf',
'/opt/oracle/product/10.2.0/oradata/orcl/cuug01.dbf',
'/opt/oracle/product/10.2.0/oradata/orcl/ORCL/datafile/o1_mf_zxm_7ycm0twl_.dbf',
'/opt/oracle/product/10.2.0/oradata/orcl/ORCL/datafile/o1_mf_cuug_7ycm20jq_.dbf'
CHARACTERSET UTF8
;
此时打开数据库会提示错误
首先要恢复数据文件
查询数据文件
SQL>select name from v$datafile;
NAME
--------------------------------------------------------------------------------
/opt/oracle/product/10.2.0/oradata/cuug/system01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/undotbs01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/sysaux01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/users01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/rmans01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/cuug01.dbf
/opt/oracle/product/10.2.0/db_1/dbs/UNNAMED00007
SQL>alter database rename file '/opt/oracle/product/10.2.0/db_1/dbs/UNNAMED00007'to '/opt/oracle/product/10.2.0/oradata/cuug/test01.dbf';
SQL>select name from v$datafile;
NAME
--------------------------------------------------------------------------------
/opt/oracle/product/10.2.0/oradata/cuug/system01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/undotbs01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/sysaux01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/users01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/rmans01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/cuug01.dbf
/opt/oracle/product/10.2.0/oradata/cuug/test01.dbf
目前数据文件还不一致，需要进行介质恢复，，但是不用using子句
SQL>recover database using backup controlfile;
ORA-00279:change 708399 generated at 06/26/2012 12:11:13 needed for thread 1
ORA-00289:suggestion :
/opt/oracle/product/10.2.0/flash_recovery_area/CUUG/archivelog/2012_06_26/o1_mf_
1_10_%u_.arc
ORA-00280:change 708399 for thread 1 is in sequence #10
Specifylog: {
/opt/oracle/product/10.2.0/oradata/cuug/redo02.log
Logapplied.
Mediarecovery complete
SQL>alter database open resetlogs;
Databasealtered.
查询恢复状态
selectfile_name,tablespace_name,bytes/1024/1024 MB fromdba_data_files
FILE_NAME TABLESPACE_NAME MB
------------------------------------------------------------------------------------------ ----------
/opt/oracle/product/10.2.0/oradata/cuug/cuug01.dbf CUUG 200
/opt/oracle/product/10.2.0/oradata/cuug/rmans01.dbf RMANS 500
/opt/oracle/product/10.2.0/oradata/cuug/users01.dbf USERS 5
/opt/oracle/product/10.2.0/oradata/cuug/sysaux01.dbf SYSAUX 250
/opt/oracle/product/10.2.0/oradata/cuug/undotbs01.dbf UNDOTBS1 25
/opt/oracle/product/10.2.0/oradata/cuug/system01.dbf SYSTEM 480
/opt/oracle/product/10.2.0/oradata/cuug/test01.dbf TEST 100
SQL>select count(*) from scott.a
2 ;
COUNT(*)
----------
3642
SQL>select count(*) from scott.aa;
COUNT(*)
----------
3642
恢复完成。
Adding Users to MySQL: The Complete TutorialMay 12, 2025 am 12:14 AMMastering the method of adding MySQL users is crucial for database administrators and developers because it ensures the security and access control of the database. 1) Create a new user using the CREATEUSER command, 2) Assign permissions through the GRANT command, 3) Use FLUSHPRIVILEGES to ensure permissions take effect, 4) Regularly audit and clean user accounts to maintain performance and security.
Mastering MySQL String Data Types: VARCHAR vs. TEXT vs. CHARMay 12, 2025 am 12:12 AMChooseCHARforfixed-lengthdata,VARCHARforvariable-lengthdata,andTEXTforlargetextfields.1)CHARisefficientforconsistent-lengthdatalikecodes.2)VARCHARsuitsvariable-lengthdatalikenames,balancingflexibilityandperformance.3)TEXTisidealforlargetextslikeartic
MySQL: String Data Types and Indexing: Best PracticesMay 12, 2025 am 12:11 AMBest practices for handling string data types and indexes in MySQL include: 1) Selecting the appropriate string type, such as CHAR for fixed length, VARCHAR for variable length, and TEXT for large text; 2) Be cautious in indexing, avoid over-indexing, and create indexes for common queries; 3) Use prefix indexes and full-text indexes to optimize long string searches; 4) Regularly monitor and optimize indexes to keep indexes small and efficient. Through these methods, we can balance read and write performance and improve database efficiency.
MySQL: How to Add a User RemotelyMay 12, 2025 am 12:10 AMToaddauserremotelytoMySQL,followthesesteps:1)ConnecttoMySQLasroot,2)Createanewuserwithremoteaccess,3)Grantnecessaryprivileges,and4)Flushprivileges.BecautiousofsecurityrisksbylimitingprivilegesandaccesstospecificIPs,ensuringstrongpasswords,andmonitori
The Ultimate Guide to MySQL String Data Types: Efficient Data StorageMay 12, 2025 am 12:05 AMTostorestringsefficientlyinMySQL,choosetherightdatatypebasedonyourneeds:1)UseCHARforfixed-lengthstringslikecountrycodes.2)UseVARCHARforvariable-lengthstringslikenames.3)UseTEXTforlong-formtextcontent.4)UseBLOBforbinarydatalikeimages.Considerstorageov
MySQL BLOB vs. TEXT: Choosing the Right Data Type for Large ObjectsMay 11, 2025 am 12:13 AMWhen selecting MySQL's BLOB and TEXT data types, BLOB is suitable for storing binary data, and TEXT is suitable for storing text data. 1) BLOB is suitable for binary data such as pictures and audio, 2) TEXT is suitable for text data such as articles and comments. When choosing, data properties and performance optimization must be considered.
MySQL: Should I use root user for my product?May 11, 2025 am 12:11 AMNo,youshouldnotusetherootuserinMySQLforyourproduct.Instead,createspecificuserswithlimitedprivilegestoenhancesecurityandperformance:1)Createanewuserwithastrongpassword,2)Grantonlynecessarypermissionstothisuser,3)Regularlyreviewandupdateuserpermissions
MySQL String Data Types Explained: Choosing the Right Type for Your DataMay 11, 2025 am 12:10 AMMySQLstringdatatypesshouldbechosenbasedondatacharacteristicsandusecases:1)UseCHARforfixed-lengthstringslikecountrycodes.2)UseVARCHARforvariable-lengthstringslikenames.3)UseBINARYorVARBINARYforbinarydatalikecryptographickeys.4)UseBLOBorTEXTforlargeuns
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment
MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.
MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
SublimeText3 Linux new version
SublimeText3 Linux latest version
