Oracle ASM 如何添加新磁盘到磁盘
适用平台: AIX hp linux win Solaris 适用版本:所有数据库10.1.0.2 to12.1.0.1 适用于 rac和 standalone 以RAC 环境为例: 假设
适用平台: AIX hp linux win Solaris
适用版本:所有数据库10.1.0.2 to12.1.0.1
适用于 rac和 standalone
以RAC 环境为例: 假设 Oracle 为oracle rdbms 属组;grid 为 gi 属组;
For ASMLIB users:
RAC 环境 gi owner 执行以下命令
1、# /etc/init.d/oracleasm scandisks #( root用户执行)
$> id
$> /etc/init.d/oracleasm listdisks
$> /etc/init.d/oracleasm querydisk
所有节点都要执行;
2、在操作系统层面检查磁盘是否可以读写(每个节点)(oracle 用户或者grid用户)
# raw device
$> dd if=/dev/raw/raw1 of=/dev/null count=100 bs=8192
# ASMLIB device
$> dd if=/dev/oracleasm/disks/PRODA07 of=/dev/null count=100 bs=8192
# raw device
$> dd if=/dev/rdsk/c1t3d0s6 of=/dev/null count=100 bs=8192
3、适用kfed 验证磁盘是否为候选盘;
kfed read
kfbh.type: 0 ; 0x002: KFBTYP_INVALID 如果看到这么一个结果,表明该磁盘是可用的。
4、创建临时磁盘组,主要是用ASM 实例来检验下所有要加的盘没有问题,,即使出问题,也不会影响原来的生产系统。虽然要检查的步骤比较多,比较烦,但是对于生产系统来说出不了任何意外。
CREATE DISKGROUP lixora EXTERNAL REDUNDANCY DISK '/dev/rhdisk*';
5、检查刚创建的dg 是否已经自动mount 了?
SELECT STATE, NAME FROM V$ASM_DISKGROUP;
6、如果没有mount,尝试手工mount
ALTER DISKGROUP TEST MOUNT;
---确认dg状态
SELECT STATE, NAME FROM V$ASM_DISKGROUP;
7、如果step6 查询lixora成功mount(如果rac ,则确保每个ASM实例都成功mount)
则说明我们需要添加的asm 盘都正常的,可以正常使用。那么我们就可以把他们加到生产的dg中了。
-----卸载dg(在ASM instance中执行这个命令)
alter diskgroup test dismount;
----删除测试用临时dg (在ASM instance 中执行这个命令)
DROP DISKGROUP TEST;
8、到这里就可以吧候选盘加到生产的dg里了。
ALTER DISKGROUP
Standalone 环境也是一样的,同样建议执行上述测试步骤。
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
本文永久更新链接地址:

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

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.

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.

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.

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 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.

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.

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.

Data Integration Simplification: AmazonRDSMySQL and Redshift's zero ETL integration Efficient data integration is at the heart of a data-driven organization. Traditional ETL (extract, convert, load) processes are complex and time-consuming, especially when integrating databases (such as AmazonRDSMySQL) with data warehouses (such as Redshift). However, AWS provides zero ETL integration solutions that have completely changed this situation, providing a simplified, near-real-time solution for data migration from RDSMySQL to Redshift. This article will dive into RDSMySQL zero ETL integration with Redshift, explaining how it works and the advantages it brings to data engineers and developers.
