search
HomeDatabaseMysql TutorialOracle控制文件的多路复用

一、控制文件的多路复用a)、shutdown immediate; b)、操作系统下,复制备份文件到新的磁盘,拷贝下新控制文件的全路径; c)startup

一、控制文件的多路复用
a)、shutdown immediate;

b)、操作系统下,复制备份文件到新的磁盘,拷贝下新控制文件的全路径;

c)startup nomount;

d)、
alter system set control_files =
'F:\Oracle\PRODUCT\10.1.0\ORADATA\ORCL\CONTROL01.CTL',
'F:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\CONTROL02.CTL',
'F:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\CONTROL03.CTL',
'E:\Oracle_Learn\control_bak\CONTROL04.CTL'
scope = spfile;

c)、shutdown immediate;

d)、startup;

注意:控制文件的手动备份一定要在数据库停止后再备份,

二、控制文件的移除
a)、shutdown immediate;

b)、startup nomount;

c)、
alter system set control_files =
'F:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\CONTROL01.CTL',
'F:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\CONTROL02.CTL',
'F:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\CONTROL03.CTL'
scope = spfile;

d)、shutdown immediate;

e)、startup ;

f)、手动删除不要的控制文件;

三、控制文件丢失的模拟测试

1、shutdown immediate;

2、手动删除控制文件,只保留一个;

3、startup启动数据库,报ORA-00205,控制文件错误;

4、shutdown immediate;

5、startup nomount;

6、alter system set control_files =
'E:\Oracle_Learn\control_bak\CONTROL04.CTL'
scope = spfile;

7、shutdown immediate;

8、startup;

说明:控制文件只要一个即可启动数据库,但是数据库在活动状态时,是严格保证每一个控制文件内容一致的。

对于控制文件没有备份,,后期只能手动创建,获得手动创建控制文件脚本方法如下:
1、sqlplus或plsql执行如下命令:
alter database backup controlfile to trace;--在数据库好的时候就要执行这个

2、找到跟踪文件位置
SQL> show parameter user_dump_dest;


NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
user_dump_dest string F:\ORACLE\PRODUCT\10.1.0\ADMIN\ORCL\UDUMP

--按时间,打开最近的跟踪文件
cat orcl_ora_4172.trc,找到如下内容:


CREATE CONTROLFILE REUSE DATABASE "ORCL" NORESETLOGS NOARCHIVELOG
MAXLOGFILES 16
MAXLOGMEMBERS 3
MAXDATAFILES 100
MAXINSTANCES 8
MAXLOGHISTORY 454
LOGFILE
GROUP 1 'F:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\REDO01.LOG' SIZE 10M,
GROUP 2 'F:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\REDO02.LOG' SIZE 10M,
GROUP 3 'F:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\REDO03.LOG' SIZE 10M
-- STANDBY LOGFILE
DATAFILE
'F:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\SYSTEM01.DBF',
'F:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\UNDOTBS01.DBF',
'F:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\SYSAUX01.DBF',
'F:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\USERS01.DBF'
CHARACTER SET ZHS16GBK

相关阅读:

Oracle 10g ASM 控制文件多路复用 

多路复用控制文件

linux

Statement
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
How do you alter a table in MySQL using the ALTER TABLE statement?How do you alter a table in MySQL using the ALTER TABLE statement?Mar 19, 2025 pm 03:51 PM

The article discusses using MySQL's ALTER TABLE statement to modify tables, including adding/dropping columns, renaming tables/columns, and changing column data types.

How do I configure SSL/TLS encryption for MySQL connections?How do I configure SSL/TLS encryption for MySQL connections?Mar 18, 2025 pm 12:01 PM

Article discusses configuring SSL/TLS encryption for MySQL, including certificate generation and verification. Main issue is using self-signed certificates' security implications.[Character count: 159]

How do you handle large datasets in MySQL?How do you handle large datasets in MySQL?Mar 21, 2025 pm 12:15 PM

Article discusses strategies for handling large datasets in MySQL, including partitioning, sharding, indexing, and query optimization.

What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)?What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)?Mar 21, 2025 pm 06:28 PM

Article discusses popular MySQL GUI tools like MySQL Workbench and phpMyAdmin, comparing their features and suitability for beginners and advanced users.[159 characters]

How do you drop a table in MySQL using the DROP TABLE statement?How do you drop a table in MySQL using the DROP TABLE statement?Mar 19, 2025 pm 03:52 PM

The article discusses dropping tables in MySQL using the DROP TABLE statement, emphasizing precautions and risks. It highlights that the action is irreversible without backups, detailing recovery methods and potential production environment hazards.

How do you create indexes on JSON columns?How do you create indexes on JSON columns?Mar 21, 2025 pm 12:13 PM

The article discusses creating indexes on JSON columns in various databases like PostgreSQL, MySQL, and MongoDB to enhance query performance. It explains the syntax and benefits of indexing specific JSON paths, and lists supported database systems.

How do you represent relationships using foreign keys?How do you represent relationships using foreign keys?Mar 19, 2025 pm 03:48 PM

Article discusses using foreign keys to represent relationships in databases, focusing on best practices, data integrity, and common pitfalls to avoid.

How do I secure MySQL against common vulnerabilities (SQL injection, brute-force attacks)?How do I secure MySQL against common vulnerabilities (SQL injection, brute-force attacks)?Mar 18, 2025 pm 12:00 PM

Article discusses securing MySQL against SQL injection and brute-force attacks using prepared statements, input validation, and strong password policies.(159 characters)

See all articles

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 Article

Hot Tools

MantisBT

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.

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!