在ASM磁盘组间迁移数据文件
在归档模式下有时可能需要将一些数据从一个磁盘组迁移到另外个磁盘组。这种情况下我们可以使用命令ldquo;BACKUP AS COPYrdquo;
在归档模式下有时可能需要将一些数据从一个磁盘组迁移到另外个磁盘组。这种情况下我们可以使用命令“BACKUP AS COPY”将数据文件移到新磁盘组。然后通过“SET NEWNAME”和“SWITCH”命令来更改控制文件里面该数据文件的文件名。
archivelog 模式:
将数据文件“+DATA/orcl/datafile/users.261.689589837”从磁盘组DATA迁移到USERDATA。
1. 使用RMAN 连接到目标数据库
$ rman
RMAN> CONNECT TARGET SYS@orcl
target database Password: XXXXXXXXX
connected to target database: ORCL (DBID=1217369048)
2. 查看数据库里面的数据文件
RMAN> REPORT SCHEMA;
Report of database schema for database with db_unique_name ORCL
List of Permanent Datafiles
===========================
File Size(MB) Tablespace RB segs Datafile Name
---- -------- -------------- ------- ------------------------
1 740 SYSTEM *** +DATA/orcl/datafile/system.258.689589737
2 570 SYSAUX *** +DATA/orcl/datafile/sysaux.259.689589785
3 55 UNDOTBS1 *** +DATA/orcl/datafile/undotbs1.260.689589831
4 5 USERS *** +DATA/orcl/datafile/users.261.689589837
List of Temporary Files
=======================
File Size(MB) Tablespace Maxsize(MB) Tempfile Name
---- -------- -------------- ----------- --------------------
1 20 TEMP 32767 +DATA/orcl/tempfile/temp.262.689589851
3. 备份数据到新磁盘组USERDATA
RMAN> BACKUP AS COPY
DATAFILE "+DATA/orcl/datafile/users.261.689589837"
FORMAT "+USERDATA";
也可以用文件号来指定相应的数据文件,如:
BACKUP AS COPY
DATAFILE 4
FORMAT "+USERDATA";
4. 将要迁移的数据文件OFFLINE
RMAN> SQL "ALTER DATABASE DATAFILE
''+DATA/orcl/datafile/users.261.689589837'' OFFLINE";
5. 修改控制文件将数据文件指向新磁盘组的备份
RMAN> SWITCH DATAFILE "+DATA/orcl/datafile/users.261.689589837" TO COPY;
6. 恢复新数据文件
RMAN> RECOVER DATAFILE "+USERDATA/orcl/datafile/users.256.689682663";
7. 将新数据文件online
RMAN> SQL "ALTER DATABASE DATAFILE
“+USERDATA/orcl/datafile/users.256.689682663” ONLINE";
8. 将旧数据文件删除
RMAN> DELETE DATAFILECOPY "+DATA/orcl/datafile/users.261.689589837";
推荐阅读:
如何修改ASM的sys密码
如何将ASM中的数据文件复制到操作系统中
Oracle 11g RAC ASM磁盘全部丢失后的恢复
Oracle 11g从入门到精通 PDF+光盘源代码
RHEL6 ASM方式安装Oracle 11g R2
Oracle 10g 手工创建ASM数据库
Ubuntu 12.04(amd64)安装完Oracle 11gR2后各种问题解决方法
如何修改Oracle 10g ASM的sys密码

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

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Go language is an efficient, concise and easy-to-learn programming language. It is favored by developers because of its advantages in concurrent programming and network programming. In actual development, database operations are an indispensable part. This article will introduce how to use Go language to implement database addition, deletion, modification and query operations. In Go language, we usually use third-party libraries to operate databases, such as commonly used sql packages, gorm, etc. Here we take the sql package as an example to introduce how to implement the addition, deletion, modification and query operations of the database. Assume we are using a MySQL database.

How to use MySQLi to establish a database connection in PHP: Include MySQLi extension (require_once) Create connection function (functionconnect_to_db) Call connection function ($conn=connect_to_db()) Execute query ($result=$conn->query()) Close connection ( $conn->close())

Hibernate polymorphic mapping can map inherited classes to the database and provides the following mapping types: joined-subclass: Create a separate table for the subclass, including all columns of the parent class. table-per-class: Create a separate table for subclasses, containing only subclass-specific columns. union-subclass: similar to joined-subclass, but the parent class table unions all subclass columns.

Apple's latest releases of iOS18, iPadOS18 and macOS Sequoia systems have added an important feature to the Photos application, designed to help users easily recover photos and videos lost or damaged due to various reasons. The new feature introduces an album called "Recovered" in the Tools section of the Photos app that will automatically appear when a user has pictures or videos on their device that are not part of their photo library. The emergence of the "Recovered" album provides a solution for photos and videos lost due to database corruption, the camera application not saving to the photo library correctly, or a third-party application managing the photo library. Users only need a few simple steps

HTML cannot read the database directly, but it can be achieved through JavaScript and AJAX. The steps include establishing a database connection, sending a query, processing the response, and updating the page. This article provides a practical example of using JavaScript, AJAX and PHP to read data from a MySQL database, showing how to dynamically display query results in an HTML page. This example uses XMLHttpRequest to establish a database connection, send a query and process the response, thereby filling data into page elements and realizing the function of HTML reading the database.

Analysis of the basic principles of the MySQL database management system MySQL is a commonly used relational database management system that uses structured query language (SQL) for data storage and management. This article will introduce the basic principles of the MySQL database management system, including database creation, data table design, data addition, deletion, modification, and other operations, and provide specific code examples. 1. Database Creation In MySQL, you first need to create a database instance to store data. The following code can create a file named "my

PHP is a back-end programming language widely used in website development. It has powerful database operation functions and is often used to interact with databases such as MySQL. However, due to the complexity of Chinese character encoding, problems often arise when dealing with Chinese garbled characters in the database. This article will introduce the skills and practices of PHP in handling Chinese garbled characters in databases, including common causes of garbled characters, solutions and specific code examples. Common reasons for garbled characters are incorrect database character set settings: the correct character set needs to be selected when creating the database, such as utf8 or u

To handle database connection errors in PHP, you can use the following steps: Use mysqli_connect_errno() to obtain the error code. Use mysqli_connect_error() to get the error message. By capturing and logging these error messages, database connection issues can be easily identified and resolved, ensuring the smooth running of your application.
