Home Database Mysql Tutorial Oracle 11g Dataguard 配置学习小结

Oracle 11g Dataguard 配置学习小结

Jun 07, 2016 pm 05:31 PM

版本采用Oracle 11g(11.2.0.3),配置过程仍然适用Oracle 10g。在近10次的dataguard配置过程中,发现采用rman duplicate方式创建物

经过了半个月的Oracle dataguard物理备库配置与学习,虽然版本采用Oracle 11g(11.2.0.3),配置过程仍然适用Oracle 10g。在近10次的dataguard配置过程中,发现采用rman duplicate方式创建物理备库非常的方便与快速。渐渐的也就不会去采用冷备方式去创建物理备库了,通过rman duplicate不仅可以创建dataguard,也可克隆数据库,功能强大。

创建dataguard主要有以下几种方式,总结与理解如下。

 

一、冷备方式配置 Dataguard

冷备方式配置略过。

特点:
1)纯手工方式配置Dataguard适合数据库比较小情况。
2)适合初学习Dataguard配置、测试与原理理解学习。

二、RMAN Duplicate方式配置 Dataguard

RMAN Duplicate不仅可以用来创建dataguard备库,还可以用来克隆数据库,仅仅是在参数上修改一下就可以直接克隆数据库了。

RMAN duplicate方式又分为以下几种配置方式:

 

方式一、通过RMAN连接target主库与本地辅助库,,直接通过对主库(活动库)进行抓取数据克隆备库。

配置文档示例:

 

优点:
1)主库无需要停机
2)无需在主库进行RMAN备份
3)无需要在主库进行备库的控制文件复制
4)无需要在主库进行备库的参数文件的准备
4)target到主库可以直接应用主库传送过来的规档日志与redo日志。

缺点:
1)主库数据文件与日志全部通过网络进行拷贝到备库,时间会相关比较长,如果主库特别大,此方法不太适合。
2)duplicate时影响主库性能与网络压力,需要选择在数据库压力比较小的时间操作。

方式二、通过RMAN连接target主库与本地辅助库,通过本地备份恢复数据文创建备库,成功后重新应用这段时间的归档与redo日志。

配置文档示例:

 

优点:
1)主库无需要停机
2)相比ACTIVE duplicate网络压力与数据库压力要小很多。
3)通过RMAN备份集duplicate克隆备库,创建备库的时间将大大缩短,特别是数据库特别大的情况。
4)target到主库可以直接应用主库传送过来的规档日志与redo日志。

缺点:
1)需要事先在主库进行RMAN备份。
2)传送备份集到备库相应位置。

 

duplicate 另一种应用:

通过RMAN连接本地辅助库,通过目标库拷贝过来的RMAN备份集进行恢复(不连接target目标库)。

该方式不适用于创建dataguard,适用于RMAN备份异机恢复数据库。

RMAN备份duplicate异机克隆恢复数据库配置。

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

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Nordhold: Fusion System, Explained
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Mandragora: Whispers Of The Witch Tree - How To Unlock The Grappling Hook
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

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)

Hot Topics

Java Tutorial
1670
14
PHP Tutorial
1274
29
C# Tutorial
1256
24
MySQL's Role: Databases in Web Applications MySQL's Role: Databases in Web Applications Apr 17, 2025 am 12:23 AM

The main role of MySQL in web applications is to store and manage data. 1.MySQL efficiently processes user information, product catalogs, transaction records and other data. 2. Through SQL query, developers can extract information from the database to generate dynamic content. 3.MySQL works based on the client-server model to ensure acceptable query speed.

Explain the role of InnoDB redo logs and undo logs. Explain the role of InnoDB redo logs and undo logs. Apr 15, 2025 am 12:16 AM

InnoDB uses redologs and undologs to ensure data consistency and reliability. 1.redologs record data page modification to ensure crash recovery and transaction persistence. 2.undologs records the original data value and supports transaction rollback and MVCC.

MySQL vs. Other Programming Languages: A Comparison MySQL vs. Other Programming Languages: A Comparison Apr 19, 2025 am 12:22 AM

Compared with other programming languages, MySQL is mainly used to store and manage data, while other languages ​​such as Python, Java, and C are used for logical processing and application development. MySQL is known for its high performance, scalability and cross-platform support, suitable for data management needs, while other languages ​​have advantages in their respective fields such as data analytics, enterprise applications, and system programming.

How does MySQL index cardinality affect query performance? How does MySQL index cardinality affect query performance? Apr 14, 2025 am 12:18 AM

MySQL index cardinality has a significant impact on query performance: 1. High cardinality index can more effectively narrow the data range and improve query efficiency; 2. Low cardinality index may lead to full table scanning and reduce query performance; 3. In joint index, high cardinality sequences should be placed in front to optimize query.

MySQL for Beginners: Getting Started with Database Management MySQL for Beginners: Getting Started with Database Management Apr 18, 2025 am 12:10 AM

The basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA

MySQL vs. Other Databases: Comparing the Options MySQL vs. Other Databases: Comparing the Options Apr 15, 2025 am 12:08 AM

MySQL is suitable for web applications and content management systems and is popular for its open source, high performance and ease of use. 1) Compared with PostgreSQL, MySQL performs better in simple queries and high concurrent read operations. 2) Compared with Oracle, MySQL is more popular among small and medium-sized enterprises because of its open source and low cost. 3) Compared with Microsoft SQL Server, MySQL is more suitable for cross-platform applications. 4) Unlike MongoDB, MySQL is more suitable for structured data and transaction processing.

Explain the InnoDB Buffer Pool and its importance for performance. Explain the InnoDB Buffer Pool and its importance for performance. Apr 19, 2025 am 12:24 AM

InnoDBBufferPool reduces disk I/O by caching data and indexing pages, improving database performance. Its working principle includes: 1. Data reading: Read data from BufferPool; 2. Data writing: After modifying the data, write to BufferPool and refresh it to disk regularly; 3. Cache management: Use the LRU algorithm to manage cache pages; 4. Reading mechanism: Load adjacent data pages in advance. By sizing the BufferPool and using multiple instances, database performance can be optimized.

MySQL: Structured Data and Relational Databases MySQL: Structured Data and Relational Databases Apr 18, 2025 am 12:22 AM

MySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.

See all articles