看了一下$ORACLE_HOME\bin\dbstart这个shell脚本,发现居然有一个bug。他认为PFILE=${ORACLE_HOME}/dbs/init${ORACLE_SID}.ora,
看了一下$Oracle_HOME\bin\dbstart这个shell脚本,发现居然有一个bug。
他认为PFILE=${ORACLE_HOME}/dbs/init${ORACLE_SID}.ora,但是实际上在oracle9i默认安装以后,$ORACLE_HOME/dbs目录下并没有init$ORACLE_SID.ora这个文件,因为9i已经使用spfile来作为启动时候的parameter file了,所以在dbs目录下只有pfileinit$ORACLE_SID.ora这个文件。而init$ORACLE_SID.ora文件则是在pfile目录中。于是就考过来,然后再执行dbstart。OK,搞定。
但是仍然有个问题,我的/etc/oratab文件最后两行是这样的
*:/u01/oracle/product/9.2.0:Y
oralinux:/u01/oracle/product/9.2.0:Y
为什么会有带*号的这行呢?dbshut或者dbstart脚本是在循环读这个文件中所有没有注释的行,所以如果有*号这行的话,在运行dbstart和dbshut时就会先报两行错,说找不到这个servicename(因为脚本中把*号当成空的sid),去掉这行就好了。但是,去掉这一行的话,每次用oracle用户登录linux的时候就会提示输入一遍ORACLE_HOME,原因是在oracle用户的profile中要运行oraenv,具体oraenv怎么写的,我就没看了,反正肯定是有*号这行就不会问了。
另外虽然dbstart和dbshut都可以运行了,但是仍然不会在linux启动的时候自动open数据库,这是为什么?我在/etc/init.d中已经创建了dbora脚本了。
当然不会自起了,因为,你在oratab中改变的只是让数据库可以用dbstart和dbshut,如果要在系统启动时启动数据库必须在/etc/rc.local中加入启动脚本啊
给你一个配置 Oracle 启动脚本的 RPM 软件包,,从 SUSE Linux 改过来的。可以用在 RedHat 7.x 上。
看看里面有什么文件就知道该如何设置了。
查看软件包简要信息:
rpm -qpi xxx.rpm
查看软件包文件列表:
rpm -qpl xxx.rpm
这只是软件包安装前的查看方式。

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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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