欢迎进入Oracle社区论坛,与200万技术人员互动交流 >>进入 一:Oracle Enterprise Linux 5.0: 必须组件安装: GNOME Desktop Environment Editors Graphical Internet Text-based Internet Development Libraries Development Tools Server Configuration To
欢迎进入Oracle社区论坛,与200万技术人员互动交流 >>进入
一:Oracle Enterprise Linux 5.0:
必须组件安装:
GNOME Desktop Environment
Editors
Graphical Internet
Text-based Internet
Development Libraries
Development Tools
Server Configuration Tools
Administration Tools
Base System Tools
X Window System
二:创建用户和用户组(以root用户创建)
groupadd -g 1001 dba
id nobody
groupadd -g 1002 oinstall
useradd -u 1002 -g oinstall -G dba oracle
passwd oracle
三:检查所需软件:(以root用户进行)
rpm -qa setarch make glibc libaio compat-libstdc++- compat-gcc-34- compat-gcc-34-c++- gcc libXp openmotif compat-db
以下为所需软件包
setarch-2.0-1.1.i386.rpm
make-3.81-1.1.i386.rpm
glibc-2.5-12.i686.rpm
libaio-0.3.106-3.2.i386.rpm
compat-libstdc++-33-3.2.3-61.i386.rpm
compat-gcc-34-3.4.6-4.i386.rpm
compat-gcc-34-c++-3.4.6-4.i386.rpm
gcc-4.1.1-52.el5.i386.rpm
libXp-1.0.0-8.i386.rpm
openmotif-2.3.0-0.3.el5.i386.rpm
compat-db-4.2.52-5.1.i386.rpm
五:配置内核参数(以root用户)
# vi /etc/sysctl.conf
kernel.shmall = 268435456
kernel.shmmax = 4294967295
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default = 4194304
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 262144
使参数输出#/sbin/sysctl -p
# vi /etc/security/limits.conf
添加以下内容:
o
racle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536
# vi /etc/pam.d/login
添加以下内容:
session required /lib/security/pam_limits.so
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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.

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.

MySQL is worth learning because it is a powerful open source database management system suitable for data storage, management and analysis. 1) MySQL is a relational database that uses SQL to operate data and is suitable for structured data management. 2) The SQL language is the key to interacting with MySQL and supports CRUD operations. 3) The working principle of MySQL includes client/server architecture, storage engine and query optimizer. 4) Basic usage includes creating databases and tables, and advanced usage involves joining tables using JOIN. 5) Common errors include syntax errors and permission issues, and debugging skills include checking syntax and using EXPLAIN commands. 6) Performance optimization involves the use of indexes, optimization of SQL statements and regular maintenance of databases.

MySQL is suitable for beginners to learn database skills. 1. Install MySQL server and client tools. 2. Understand basic SQL queries, such as SELECT. 3. Master data operations: create tables, insert, update, and delete data. 4. Learn advanced skills: subquery and window functions. 5. Debugging and optimization: Check syntax, use indexes, avoid SELECT*, and use LIMIT.

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.

MySQL is an open source relational database management system that is widely used in Web development. Its key features include: 1. Supports multiple storage engines, such as InnoDB and MyISAM, suitable for different scenarios; 2. Provides master-slave replication functions to facilitate load balancing and data backup; 3. Improve query efficiency through query optimization and index use.

SQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.

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


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