Home Database Mysql Tutorial 使用RMAN进行同名数据库异地环境搭建实验

使用RMAN进行同名数据库异地环境搭建实验

Jun 07, 2016 pm 04:49 PM
database

随着版本不断地提升,RMAN作为标准备份工具的作用地位是不断的被增强的。从过去传统的备份还原工具,到现在新环境迁移、DG搭建,

随着版本不断地提升,RMAN作为标准备份工具的作用地位是不断的被增强的。从过去传统的备份还原工具,到现在新环境迁移、DG搭建,我们都可以看到RMAN工具增强的身影。

本篇就以RMAN为工具,利用RMAN备份在新主机上搭建服务名相同的数据库。由于环境所限,笔者采用的方法是:先进行备份获取,之后删除掉原数据库,最后使用备份重新搭建(包括参数、控制文件和数据文件恢复)。

推荐阅读:

RMAN 配置归档日志删除策略

Oracle基础教程之通过RMAN复制数据库

RMAN备份策略制定参考内容

RMAN备份学习笔记

Oracle数据库备份加密 RMAN加密

1、环境介绍

我们选择Linux环境下的10.2.0.1进行实验。

SQL> select * from v$version;

BANNER

---------------------------------

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod

PL/SQL Release 10.2.0.1.0 - Production

CORE    10.2.0.1.0      Production

TNS for Linux: Version 10.2.0.1.0 - Production

NLSRTL Version 10.2.0.1.0 - Production

当前处在归档模式下。

SQL> archive log list;

Database log mode              Archive Mode

Automatic archival            Enabled

Archive destination            USE_DB_RECOVERY_FILE_DEST

Oldest online log sequence    2

Next log sequence to archive  4

Current log sequence          4

2、备份获取

RMAN支持online和offline两种备份模式。如果选择online备份模式,Oracle就不需要因为备份操作停机,但是恢复过程需要配合redo log的apply过程。如果选择offline备份模式,Oracle需要在备份过程中停机,但是理论上是不需要archive redo log进行支持的。

如果Oracle运行在archived模式下,RMAN可以进行online和offline模式。如果是noarchived模式,RMAN就只能在offline模式备份了。

当前环境变量:

[oracle@SimpleLinuxUp ~]$ env | grep ORA

ORACLE_SID=oratest

ORACLE_BASE=/u01/app/oracle

ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1

笔者对online和offline备份,都进行保留。首先创建驻留目录:

[root@SimpleLinuxUp ~]# cd /

[root@SimpleLinuxUp /]# mkdir onlinebk

[root@SimpleLinuxUp /]# mkdir oflinebk

[root@SimpleLinuxUp /]# chown oracle:oinstall onlinebk/

[root@SimpleLinuxUp /]# chown oracle:oinstall oflinebk/

[root@SimpleLinuxUp /]# ls -l | grep linebk

drwxr-xr-x  2 oracle oinstall  4096 Mar  3 16:46 oflinebk

drwxr-xr-x  2 oracle oinstall  4096 Mar  3 16:46 onlinebk

如果进行online备份,数据库不需要关闭。备份范围为:参数文件、数据文件、控制文件。

(online backup)

RMAN> connect target /

connected to target database: ORATEST (DBID=3370560176)

using target database control file instead of recovery catalog

RMAN> backup database format '/onlinebk/%U'; --数据库

Starting backup at 03-MAR-14

using channel ORA_DISK_1

channel ORA_DISK_1: starting full datafile backupset

(篇幅原因,有省略……)

piece handle=/onlinebk/04p28ubo_1_1 tag=TAG20140303T165227 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:02

Finished backup at 03-MAR-14

RMAN> backup archivelog all format '/onlinebk/%U'; --已经归档日志

Starting backup at 03-MAR-14

current log archived

using channel ORA_DISK_1

(篇幅原因,有省略……)

piece handle=/onlinebk/05p28uds_1_1 tag=TAG20140303T165420 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:02

Finished backup at 03-MAR-14

RMAN> backup current controlfile format '/onlinebk/control.bks';

Starting backup at 03-MAR-14

using channel ORA_DISK_1

(篇幅原因,有省略……)

piece handle=/onlinebk/control.bks tag=TAG20140303T165457 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01

Finished backup at 03-MAR-14

RMAN> backup spfile format '/onlinebk/spfile.bks';

Starting backup at 03-MAR-14

using channel ORA_DISK_1

(篇幅原因,,有省略……)

piece handle=/onlinebk/spfile.bks tag=TAG20140303T165518 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01

Finished backup at 03-MAR-14

如果进行offline备份,则需要将数据库完整关闭(非abort关闭)。也不需要进行归档文件备份。

RMAN> shutdown immediate;

database closed

database dismounted

Oracle instance shut down

RMAN> startup mount;

connected to target database (not started)

Oracle instance started

database mounted

进行备份。

RMAN> backup database format '/oflinebk/%U';

Starting backup at 03-MAR-14

allocated channel: ORA_DISK_1

(篇幅原因,有省略……)

piece handle=/oflinebk/09p28ukd_1_1 tag=TAG20140303T165713 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:02

Finished backup at 03-MAR-14

RMAN> backup current controlfile format '/oflinebk/control.bks';

Starting backup at 03-MAR-14

using channel ORA_DISK_1

channel ORA_DISK_1: starting full datafile backupset

(篇幅原因,有省略……)

piece handle=/oflinebk/control.bks tag=TAG20140303T165824 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01

Finished backup at 03-MAR-14

RMAN> backup spfile format '/oflinebk/spfile.bks';

Starting backup at 03-MAR-14

using channel ORA_DISK_1

(篇幅原因,有省略……)

piece handle=/oflinebk/spfile.bks tag=TAG20140303T165841 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01

Finished backup at 03-MAR-14

必要的备份元素已经具备。注意:如果从完善的角度,对TNS网络参数三文件:tnsnames.ora、listener.ora和sqlnet.ora最好也进行备份。

3、数据库删除

配置XWindows工具调用dbca将原数据库删除。

[oracle@SimpleLinuxUp oflinebk]$ export DISPLAY=192.168.0.1:0.0

[oracle@SimpleLinuxUp oflinebk]$ xclock

Warning: Missing charsets in String to FontSet conversion

调用dbca删除数据库。

删除数据库确认。

SQL> conn / as sysdba

Connected to an idle instance.

SQL> startup

ORA-01078: failure in processing system parameters

LRM-00109: could not open parameter file '/u01/app/oracle/product/10.2.0/db_1/dbs/initoratest.ora'

注意:使用dbca删除数据库后,根据OFA原则创建的数据库目录大都被删除。相关文件也被删除。

下面就可以进行恢复过程。

更多详情见请继续阅读下一页的精彩内容:

linux

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How does Go language implement the addition, deletion, modification and query operations of the database? How does Go language implement the addition, deletion, modification and query operations of the database? Mar 27, 2024 pm 09:39 PM

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 does Hibernate implement polymorphic mapping? How does Hibernate implement polymorphic mapping? Apr 17, 2024 pm 12:09 PM

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.

iOS 18 adds a new 'Recovered' album function to retrieve lost or damaged photos iOS 18 adds a new 'Recovered' album function to retrieve lost or damaged photos Jul 18, 2024 am 05:48 AM

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

How to handle database connection errors in PHP How to handle database connection errors in PHP Jun 05, 2024 pm 02:16 PM

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.

Detailed tutorial on establishing a database connection using MySQLi in PHP Detailed tutorial on establishing a database connection using MySQLi in PHP Jun 04, 2024 pm 01:42 PM

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())

An in-depth analysis of how HTML reads the database An in-depth analysis of how HTML reads the database Apr 09, 2024 pm 12:36 PM

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.

Tips and practices for handling Chinese garbled characters in databases with PHP Tips and practices for handling Chinese garbled characters in databases with PHP Mar 27, 2024 pm 05:21 PM

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

How to connect to remote database using Golang? How to connect to remote database using Golang? Jun 01, 2024 pm 08:31 PM

Through the Go standard library database/sql package, you can connect to remote databases such as MySQL, PostgreSQL or SQLite: create a connection string containing database connection information. Use the sql.Open() function to open a database connection. Perform database operations such as SQL queries and insert operations. Use defer to close the database connection to release resources.

See all articles