假如创建Oracle数据库时,没有创建实例,没有SCOTT用户,也没有EMP文件。 需要执行下面的一些脚本文件: 路径:{ORACLE_HOME}\RD
假如创建Oracle数据库时,没有创建实例,没有SCOTT用户,也没有EMP文件。
需要执行下面的一些脚本文件:
路径:{ORACLE_HOME}\RDBMS\ADMIN
1、sql>@ ..\utlsampl.sql (********)
用于创建SCOTT用户,及其该用户下面的一些表,如EMP,DEPT
执行后会直接退出sql命令页面,返回到cmd。再次进入,使用
select username from dba_users order by username; 即可以看到scott用户已创建。
sql>conn scott/tiger; 即可查看表emp的数据
2、sql>@ ..\catalog.sql (*******)
Creates the views of the data dictionary tables, the dynamic performance views, and public synonyms for many of the views. Grants PUBLIC access to the synonyms
3、sql>@ ..\catproc.sql(*******)
Runs all scripts required for or used with PL/SQL.
4、sql>@ ..\PUPBLD.SQL:(***)
Required for SQL*Plus. Enables SQL*Plus to disable commands by
5、sql>@ ..\DBMSSTDX.SQL:
Before a trigger can be created, the user SYS must run this SQL script
6、sql>@ ..\STANDARD.SQL:
Before run PL/SQL, the user SYS must run this SQL script
查看当前数据库的版本,是否与系统版本相符:如32位/64位
select * from v$version; (sys)
防止开机启动慢,,进入services.msc关闭oracle的相关服务,在需要时开启,即改为手动,而非开机启动。
配置Net Configuration Assistant,包含监听程序及相关的服务名。

The article discusses using MySQL's ALTER TABLE statement to modify tables, including adding/dropping columns, renaming tables/columns, and changing column data types.

Article discusses configuring SSL/TLS encryption for MySQL, including certificate generation and verification. Main issue is using self-signed certificates' security implications.[Character count: 159]

Article discusses strategies for handling large datasets in MySQL, including partitioning, sharding, indexing, and query optimization.

Article discusses popular MySQL GUI tools like MySQL Workbench and phpMyAdmin, comparing their features and suitability for beginners and advanced users.[159 characters]

The article discusses dropping tables in MySQL using the DROP TABLE statement, emphasizing precautions and risks. It highlights that the action is irreversible without backups, detailing recovery methods and potential production environment hazards.

Article discusses using foreign keys to represent relationships in databases, focusing on best practices, data integrity, and common pitfalls to avoid.

The article discusses creating indexes on JSON columns in various databases like PostgreSQL, MySQL, and MongoDB to enhance query performance. It explains the syntax and benefits of indexing specific JSON paths, and lists supported database systems.

Article discusses securing MySQL against SQL injection and brute-force attacks using prepared statements, input validation, and strong password policies.(159 characters)


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

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Dreamweaver Mac version
Visual web development tools

SublimeText3 Chinese version
Chinese version, very easy to use

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft
