1.如何在Linux启动时自动启动Oracle监听和实例 修改/etc/oratab文件,命令如下: [oracle@oracle11g ~]$ vi /etc/oratab 找到:accp:/u01/oracle:N 修改为: accp:/u01/oracle:Y 第二步:把lsnrctl start和dbstart添加到rc.local文件中,命令如下: [oracle@ora
1.如何在Linux启动时自动启动Oracle监听和实例
修改/etc/oratab文件,命令如下:
[oracle@oracle11g ~]$ vi /etc/oratab
找到:accp:/u01/oracle:N 修改为: accp:/u01/oracle:Y
第二步:把lsnrctl start和dbstart添加到rc.local文件中,命令如下:
[oracle@oracle11g ~]$ vi /etc/rc.d/rc.local
添加:
su oracle -lc “/u01/oracle/bin/lsnrctl start”
su oracle -lc /u01/oracle/bin/dbstart
2.执行 dbstart和dbshut会提示:
[oracle@oracle11g ~]$ dbstart
ORACLE_HOME_LISTNER is not SET, unable to auto-start Oracle Net Listener
Usage: /u01/app/oracle/oracle/product/10.2.0/db_1/bin/dbstart ORACLE_HOME
错误原因是:dbstart和dbshut脚本文件中ORACLE_HOME_LISTNER的设置有问题,分别打开两个文件找到:ORACLE_HOME_LISTNER=$1,修改为
ORACLE_HOME_LISTNER=$ORACLE_HOME,命令如下:
[oracle@oracle11g ~]$ vi $ORACLE_HOME/bin/dbstart
[oracle@oracle11g ~]$ vi $ORACLE_HOME/bin/dbshut
PS:第一个命令有空格,所以要用引号的
原文地址:Linux开机启动oracle的设置, 感谢原作者分享。

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.

The steps to build a MySQL database include: 1. Create a database and table, 2. Insert data, and 3. Conduct queries. First, use the CREATEDATABASE and CREATETABLE statements to create the database and table, then use the INSERTINTO statement to insert the data, and finally use the SELECT statement to query the data.

MySQL is suitable for beginners because it is easy to use and powerful. 1.MySQL is a relational database, and uses SQL for CRUD operations. 2. It is simple to install and requires the root user password to be configured. 3. Use INSERT, UPDATE, DELETE, and SELECT to perform data operations. 4. ORDERBY, WHERE and JOIN can be used for complex queries. 5. Debugging requires checking the syntax and use EXPLAIN to analyze the query. 6. Optimization suggestions include using indexes, choosing the right data type and good programming habits.

MySQL is suitable for beginners because: 1) easy to install and configure, 2) rich learning resources, 3) intuitive SQL syntax, 4) powerful tool support. Nevertheless, beginners need to overcome challenges such as database design, query optimization, security management, and data backup.

Yes,SQLisaprogramminglanguagespecializedfordatamanagement.1)It'sdeclarative,focusingonwhattoachieveratherthanhow.2)SQLisessentialforquerying,inserting,updating,anddeletingdatainrelationaldatabases.3)Whileuser-friendly,itrequiresoptimizationtoavoidper

ACID attributes include atomicity, consistency, isolation and durability, and are the cornerstone of database design. 1. Atomicity ensures that the transaction is either completely successful or completely failed. 2. Consistency ensures that the database remains consistent before and after a transaction. 3. Isolation ensures that transactions do not interfere with each other. 4. Persistence ensures that data is permanently saved after transaction submission.

MySQL is not only a database management system (DBMS) but also closely related to programming languages. 1) As a DBMS, MySQL is used to store, organize and retrieve data, and optimizing indexes can improve query performance. 2) Combining SQL with programming languages, embedded in Python, using ORM tools such as SQLAlchemy can simplify operations. 3) Performance optimization includes indexing, querying, caching, library and table division and transaction management.

MySQL uses SQL commands to manage data. 1. Basic commands include SELECT, INSERT, UPDATE and DELETE. 2. Advanced usage involves JOIN, subquery and aggregate functions. 3. Common errors include syntax, logic and performance issues. 4. Optimization tips include using indexes, avoiding SELECT* and using LIMIT.


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