【Java项目实战】PLSQL报错Dynamic Performance Tables not acce
本来是想把解决PLSQL中文乱码问题,可问题是一个接着一个的出现,想看看中文乱码问题解决没有,结果查询表时又弹出这样一个错误。 拿着有道查了一下,说是动态性能表没有权利被访问。上网查了一下相关的问题,才知道原来PLSQL在用户运行过程中,要收集用户统
本来是想把解决PLSQL中文乱码问题,可问题是一个接着一个的出现,想看看中文乱码问题解决没有,结果查询表时又弹出这样一个错误。
拿着有道查了一下,说是动态性能表没有权利被访问。上网查了一下相关的问题,才知道原来PLSQL在用户运行过程中,要收集用户统计信息,但是由于我们现在登录的用户没有权限访问v$session,v$sesstat和v$statname视图,所以不能收集当前用户的统计信息,和PLSQL工具中配置的Automatic Statistics相冲突,所以会出现上面的提示信息。
所以我的解决方案是彻底禁掉PLSQL的统计功能。选择Tools——Preferences,然后找到Options,把Automatic Statistics选项前面的小勾去掉,点击保存,退出。
这个是最简单的办法,除此之外,又查到两个方法,其中一个比较狗血,就是把上面问题提示框中的“Don't show this message again”选项勾选,让下次不要再出现这个提示框,这个方法有点让人不能接受啊。
另外一个方法就是给访问用户授权,让用户有权限访问这三个视图。第三种方法给大家推荐一个博客,我觉得这个博客中介绍的非常详细,在这里我就不再赘述了。博客地址:http://blog.itpub.net/519536/viewspace-614671/
无论哪种方法解决了问题,最终的目的都是为了方便大家学习。PLSQL让我很头疼,但是也让我接触了很多它的意外状况,让我能够对它认识更深刻,了解的更深入。

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











Java 8 introduces the Stream API, providing a powerful and expressive way to process data collections. However, a common question when using Stream is: How to break or return from a forEach operation? Traditional loops allow for early interruption or return, but Stream's forEach method does not directly support this method. This article will explain the reasons and explore alternative methods for implementing premature termination in Stream processing systems. Further reading: Java Stream API improvements Understand Stream forEach The forEach method is a terminal operation that performs one operation on each element in the Stream. Its design intention is

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP and Python each have their own advantages and are suitable for different scenarios. 1.PHP is suitable for web development and provides built-in web servers and rich function libraries. 2. Python is suitable for data science and machine learning, with concise syntax and a powerful standard library. When choosing, it should be decided based on project requirements.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

The reasons why PHP is the preferred technology stack for many websites include its ease of use, strong community support, and widespread use. 1) Easy to learn and use, suitable for beginners. 2) Have a huge developer community and rich resources. 3) Widely used in WordPress, Drupal and other platforms. 4) Integrate tightly with web servers to simplify development deployment.

PHP is suitable for web development and content management systems, and Python is suitable for data science, machine learning and automation scripts. 1.PHP performs well in building fast and scalable websites and applications and is commonly used in CMS such as WordPress. 2. Python has performed outstandingly in the fields of data science and machine learning, with rich libraries such as NumPy and TensorFlow.
