Linux真机环境Oracle 10gR2 RAC 安装完成经验心得
这里说说服务器具体配置情况，System name: LinuxNode name: node1Release: 2.6.9-34.ELsmpVersion:
下面说说碰到的问题和处理方法，大家以后安装时候可以少走弯路
1.voting ,ocr问题，这2个东西困扰了我很长时间
本来我一直以为ocr 和voting是一个文件夹或者，因为直接指定RAW设备并没有这个问题
但是当直接建立好这2个文件命名的文件夹提供给cluster 安装工具时候始终报错，反复测试始终通不过
随后我考虑试试让oracle 自己建立文件夹看看，结果通过 ，随后发现蹊跷～
ocr 和 voting 是2个文件，这才明天oracle 需要提供镜像以保证 RAC集群安全，（不用镜像没有问题）
2.万恶的Oracle bug
先看下面
*** SERVICE NAME) 2008-10-25 01:45:25.039
*** SESSION ID156.1) 2008-10-25 01:45:25.039
ORA-00200: ????????
ORA-00202: ????: ''/vol4/oracledata/RACDB/control01.ctl''
ORA-27086: ?????? - ????
Linux-x86_64 Error: 37: No locks available
Additional information: 10
这个是我从 trace 文件中抓出来的一段。
情况是这样的，RAC cluster ，database 2个软件安装完成以后 通过dbca创建数据库报错。
提示无法创建控制文件，经过分析确定为linux系统问题，但是始终查不到原因，上网搜了半天想到nfs,可能是nfs文件系统错误
再通过google 发现这个是oracle 建立在nfs 文件系统上的一个bug。
解决办法
运行如下命令
service nfslock start
随后数据库可以正常创建，问题解决
3. database 软件安装问题
始终提示无法认出 nfs 的共享存储，
解决办法 将 相关自动挂载信息写入 /etc/fstab文件中并且reboot 服务器。
问题解决
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
1664
14
1423
52
1317
25
1268
29
1243
24
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.
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.
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: An Introduction to the World's Most Popular Database
Apr 12, 2025 am 12:18 AM
MySQL is an open source relational database management system, mainly used to store and retrieve data quickly and reliably. Its working principle includes client requests, query resolution, execution of queries and return results. Examples of usage include creating tables, inserting and querying data, and advanced features such as JOIN operations. Common errors involve SQL syntax, data types, and permissions, and optimization suggestions include the use of indexes, optimized queries, and partitioning of tables.
MySQL's Place: Databases and Programming
Apr 13, 2025 am 12:18 AM
MySQL's position in databases and programming is very important. It is an open source relational database management system that is widely used in various application scenarios. 1) MySQL provides efficient data storage, organization and retrieval functions, supporting Web, mobile and enterprise-level systems. 2) It uses a client-server architecture, supports multiple storage engines and index optimization. 3) Basic usages include creating tables and inserting data, and advanced usages involve multi-table JOINs and complex queries. 4) Frequently asked questions such as SQL syntax errors and performance issues can be debugged through the EXPLAIN command and slow query log. 5) Performance optimization methods include rational use of indexes, optimized query and use of caches. Best practices include using transactions and PreparedStatemen
Why Use MySQL? Benefits and Advantages
Apr 12, 2025 am 12:17 AM
MySQL is chosen for its performance, reliability, ease of use, and community support. 1.MySQL provides efficient data storage and retrieval functions, supporting multiple data types and advanced query operations. 2. Adopt client-server architecture and multiple storage engines to support transaction and query optimization. 3. Easy to use, supports a variety of operating systems and programming languages. 4. Have strong community support and provide rich resources and solutions.
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?
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.
