利用RMAN在文件系统与ASM之间迁移数据库
在Oracle10g中在操作系统与ASM之间不能使用复制命令（11g有相关复制命令）比如cp操作来复制文件，为了使用ASM来管理已经存在的数
在Oracle10g中在操作系统与ASM之间不能使用复制命令（11g有相关复制命令）比如cp操作来复制文件，为了使用ASM来管理已经存在的数据库必须将数据库迁移到ASM中。可以通过RMAN来完成这项操作。假设在文件系统和ASM磁盘组中有足够的空间来存储整个数据库可以将数据库从文件系统中直接迁移到ASM中。如果在ASM和文件系统同时没有足够的空间来存储整个数据库，可以将数据库备份到磁带，使用旧的磁盘来创建ASM磁盘组并使用磁带备份将数据库还原到ASM中。
如果文件系统和ASM同时有足够的空间来存储整个数据库，可以不使用磁带过渡直接将数据库迁移到ASM中。在这个例子中目标ASM磁盘组为+DISK1。在迁移的过程中所有的闪回日志将会被丢弃，，因此，数据库中的任何受保护还原点都将变为无效。在执行迁移之前需要将其删除。
--------------------------------------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
--------------------------------------分割线 --------------------------------------
将数据库从文件系统迁移到ASM的操作步骤如下:
1.记录数据库迁移之前的数据文件，控制文件，联机重做日志文件的文件名
SQL> select name,status from v$datafile;
NAME STATUS
-------------------------------------------------------------------------------- -------
/u01/app/oracle/oradata/test/system01.dbf SYSTEM
/u01/app/oracle/oradata/test/undotbs01.dbf ONLINE
/u01/app/oracle/oradata/test/sysaux01.dbf ONLINE
/u01/app/oracle/oradata/test/users01.dbf ONLINE
/u01/app/oracle/oradata/test/example01.dbf ONLINE
/u01/app/oracle/oradata/test/tspitr01.dbf ONLINE
/u01/app/oracle/oradata/test/test01.dbf ONLINE
7 rows selected
SQL> select member,status from v$logfile;
MEMBER STATUS
-------------------------------------------------------------------------------- -------
/u01/app/oracle/oradata/test/redo03.log
/u01/app/oracle/oradata/test/redo02.log
/u01/app/oracle/oradata/test/redo01.log
SQL> show parameter control_files
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
control_files string /u01/app/oracle/oradata/test/control01.ctl,
/u01/app/oracle/oradata/test/control02.ctl,
/u01/app/oracle/oradata/test/control03.ctl
2.将数据库文件作为副本备份到ASM磁盘组
[oracle@oracle11g ~]$ export NLS_DATE_FORMAT='yyyy-mm-dd hh24:mi:ss';
[oracle@oracle11g ~]$ rman target catalog
Recovery Manager: Release 10.2.0.5.0 - Production on Wed Apr 1 16:06:19 2015
Copyright (c) 1982, 2007, Oracle. All rights reserved.
connected to target database: TEST (DBID=2168949517)
connected to recovery catalog database
RMAN> backup as copy incremental level 0 database format '+DISK1' tag 'DB_ASM_MIGRATION';
Starting backup at 2015-04-01 16:06:27
starting full resync of recovery catalog
full resync complete
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=151 devtype=DISK
channel ORA_DISK_1: starting datafile copy
input datafile fno=00001 name=/u01/app/oracle/oradata/test/system01.dbf
output filename=+DISK1/test/datafile/system.266.875894803 tag=DB_ASM_MIGRATION recid=17 stamp=875894833
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:45
channel ORA_DISK_1: starting datafile copy
input datafile fno=00003 name=/u01/app/oracle/oradata/test/sysaux01.dbf
output filename=+DISK1/test/datafile/sysaux.267.875894845 tag=DB_ASM_MIGRATION recid=18 stamp=875894865
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:25
channel ORA_DISK_1: starting datafile copy
input datafile fno=00005 name=/u01/app/oracle/oradata/test/example01.dbf
output filename=+DISK1/test/datafile/example.265.875894871 tag=DB_ASM_MIGRATION recid=19 stamp=875894883
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:15
channel ORA_DISK_1: starting datafile copy
input datafile fno=00006 name=/u01/app/oracle/oradata/test/tspitr01.dbf
output filename=+DISK1/test/datafile/tspitr.264.875894885 tag=DB_ASM_MIGRATION recid=20 stamp=875894892
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:16
channel ORA_DISK_1: starting datafile copy
input datafile fno=00002 name=/u01/app/oracle/oradata/test/undotbs01.dbf
output filename=+DISK1/test/datafile/undotbs1.263.875894899 tag=DB_ASM_MIGRATION recid=21 stamp=875894903
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07
channel ORA_DISK_1: starting datafile copy
input datafile fno=00004 name=/u01/app/oracle/oradata/test/users01.dbf
output filename=+DISK1/test/datafile/users.262.875894907 tag=DB_ASM_MIGRATION recid=22 stamp=875894907
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
channel ORA_DISK_1: starting datafile copy
input datafile fno=00007 name=/u01/app/oracle/oradata/test/test01.dbf
output filename=+DISK1/test/datafile/test.261.875894909 tag=DB_ASM_MIGRATION recid=23 stamp=875894910
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01
Finished backup at 2015-04-01 16:08:30
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
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
When might a full table scan be faster than using an index in MySQL?
Apr 09, 2025 am 12:05 AM
Full table scanning may be faster in MySQL than using indexes. Specific cases include: 1) the data volume is small; 2) when the query returns a large amount of data; 3) when the index column is not highly selective; 4) when the complex query. By analyzing query plans, optimizing indexes, avoiding over-index and regularly maintaining tables, you can make the best choices in practical applications.
Explain InnoDB Full-Text Search capabilities.
Apr 02, 2025 pm 06:09 PM
InnoDB's full-text search capabilities are very powerful, which can significantly improve database query efficiency and ability to process large amounts of text data. 1) InnoDB implements full-text search through inverted indexing, supporting basic and advanced search queries. 2) Use MATCH and AGAINST keywords to search, support Boolean mode and phrase search. 3) Optimization methods include using word segmentation technology, periodic rebuilding of indexes and adjusting cache size to improve performance and accuracy.
Can I install mysql on Windows 7
Apr 08, 2025 pm 03:21 PM
Yes, MySQL can be installed on Windows 7, and although Microsoft has stopped supporting Windows 7, MySQL is still compatible with it. However, the following points should be noted during the installation process: Download the MySQL installer for Windows. Select the appropriate version of MySQL (community or enterprise). Select the appropriate installation directory and character set during the installation process. Set the root user password and keep it properly. Connect to the database for testing. Note the compatibility and security issues on Windows 7, and it is recommended to upgrade to a supported operating system.
Difference between clustered index and non-clustered index (secondary index) in InnoDB.
Apr 02, 2025 pm 06:25 PM
The difference between clustered index and non-clustered index is: 1. Clustered index stores data rows in the index structure, which is suitable for querying by primary key and range. 2. The non-clustered index stores index key values and pointers to data rows, and is suitable for non-primary key column queries.
MySQL: Simple Concepts for Easy Learning
Apr 10, 2025 am 09:29 AM
MySQL is an open source relational database management system. 1) Create database and tables: Use the CREATEDATABASE and CREATETABLE commands. 2) Basic operations: INSERT, UPDATE, DELETE and SELECT. 3) Advanced operations: JOIN, subquery and transaction processing. 4) Debugging skills: Check syntax, data type and permissions. 5) Optimization suggestions: Use indexes, avoid SELECT* and use transactions.
The relationship between mysql user and database
Apr 08, 2025 pm 07:15 PM
In MySQL database, the relationship between the user and the database is defined by permissions and tables. The user has a username and password to access the database. Permissions are granted through the GRANT command, while the table is created by the CREATE TABLE command. To establish a relationship between a user and a database, you need to create a database, create a user, and then grant permissions.
Can mysql and mariadb coexist
Apr 08, 2025 pm 02:27 PM
MySQL and MariaDB can coexist, but need to be configured with caution. The key is to allocate different port numbers and data directories to each database, and adjust parameters such as memory allocation and cache size. Connection pooling, application configuration, and version differences also need to be considered and need to be carefully tested and planned to avoid pitfalls. Running two databases simultaneously can cause performance problems in situations where resources are limited.
Explain different types of MySQL indexes (B-Tree, Hash, Full-text, Spatial).
Apr 02, 2025 pm 07:05 PM
MySQL supports four index types: B-Tree, Hash, Full-text, and Spatial. 1.B-Tree index is suitable for equal value search, range query and sorting. 2. Hash index is suitable for equal value searches, but does not support range query and sorting. 3. Full-text index is used for full-text search and is suitable for processing large amounts of text data. 4. Spatial index is used for geospatial data query and is suitable for GIS applications.
