dba for beginners

The performance or stability of many application systems is not ideal, which is becoming a difficult problem soon after the system is online, and the reasons for these problems often reflect the fact that the people who design these systems are not very familiar with the database itself! and the DBA does not understand the business! This leads to a lot of problems that could have been avoided; On the other hand, with the database self-regulation, the

Since the DBA's work has been summarized for more than a year, I have respected leaders and colleagues, obeyed the arrangement and observed discipline, insisted on Studying professional knowledge, and worked diligently. Summary of the past, in the knowledge structure, can complete the work of the EBS-DBA; in the daily work XX, can complete the work tasks of the EBS-DBA, adapt to the

Why is it so difficult to find a good Oracle DBA? This is not only the pain of many CIOs, but also the problem that many IT directors cannot solve. But where do so many people who have obtained OCP certification from ORACLE training courses go? Tom is a database administrator with An OCP license and a certain understanding of the database architecture and operating principles. I thought everything was okay, but as soon as I took office, Tom was faced

Database Administrator (DBA. This position has different meanings for different people. A small software development studio has broader responsibilities than a large company with a highly detailed division of labor. A company, whether it is developing its own application software or purchasing third-party application software, only needs to involve databases (how many applications that do not involve databases? Databases are the soul and brain of busi

The following article describes how to log on to SQL * Plus as a DBA at Oracle10g. I saw several related articles on the internet two days ago, to learn how to install the actual operation steps on Windows XP Pro, you can change the path of the following article. Oracle10g: How to log on to iSQL * Plus as a DBA Generally, you can log on to the isqlplus website http: // iport/isqlplus. after entering the web

Differences between sys and system users 1) The most important difference is that the importance of stored data is different. Base tables and views of all ORACLE data dictionaries in SYS are stored in SYS users. These base tables and views are crucial for Oracle operation and are maintained by the database, no user can change it manually. Sys users have the role or permissions such as dBA, sysdba, and sysoper, and are the users with the highest Oracle

Precautions for revoking DBA roles Oracle has very fine-grained permissions. To facilitate the management of numerous permissions, Oracle introduces the role logic concept and also sets many roles in the system. In actual applications, application users may have complicated permissions. Therefore, to facilitate authorization, many application users are granted the DBA role, and the

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For python beginners, feel different from C. For python beginners I have been reading Python for more than half a month since the beginning. I have read Python core programming and Dive into Python. In other words, I read two books in half a month. I personally know that there are many small programs to be swallowed up. This is also because I have no need to use this book for large-scale development at the

The database administrator-DBA, in simple words, is a lot of things for many people. In a small-and medium-sized enterprise, he has a wide range of work, while in a formal management of large enterprises, his work will be very specific. Whether your company is developing or applying third-party development tools, you need to decide whether to hire a DBA. know whether your company needs this position and wha

Label:Original URL Link: http://wangwei007.blog.51cto.com/68019/1718311 MySQL is a cross-platform open source relational database management system, currently MySQL is widely used in small and medium-sized websites on the internet. Because of its small size, fast speed, low total cost of ownership, especially the open source, many small and medium-sized web sites in order to reduce the total cost of ownership of the site chose MySQL as the site database. As MySQL is widely used on the Internet,

I. DBA's current adjustments to system performance and stability Currently, the DBA's efforts to adjust the system performance are roughly as follows:1. Optimizing On the hardware layer. This usually means spending money directly, buying equipment, and resizing.2. Optimize the database, such as adjusting initialization parameters and the physical structure of the database.3. Optimize the SQL of the application, such as analyzing statspack in the database and adjusting top SQL.4. There are only

Common HTML tags for beginners (3) List tags: html list tags for beginners In the third blog, we are talking about inserting link tags. We usually see blue link tags, images, and emails on webpages, these are the functions of inserting the tags of The Link class. Mailto is also a feature of the Image Tag labels are essential in the production of web pages. To ensure the diversity and diversity of web pag

JQuery beginners (3): jquery beginners 3. Events and animations A. Events Aa. DOM Loading 1. Why use jQuery to load the DOM method? Use the javascript window. the onload () method is required to load the DOM by waiting until all resources on the requested page are loaded to add event behavior to the DOM element. jquery only needs to load the DOM element, bind the event immediately 2. Form: $ (Function (){

Ajax for beginners. ajax for beginners I. Ajax introduction, advantages and disadvantages, application scenarios and technologies Ajax introduction: Asynchronous Javascript And XML (Asynchronous JavaScript And XML) It is not a single technology, but a combination of a series of interactive web application technologies. AJAX is a technology used to create fast dynamic web pages. By performing a small amount

Swift beginners-advanced syntax and swift beginners Default Binding (Optional Binding is automatically set to null) Add ?, Nil can be bound by default. Var window: UIWindow? That is to say, if the value of window is not assigned, the value of window is nil. This is different from the principle of automatic nil setup in the ARC mode in Objective-C. NilType exists in Swift, and its inverse operation

Install nginx in windows for beginners and windowsng.pdf for beginners Windows Installation nginx,: http://nginx.org/download/ When downloading, download the. zip extension package because the. zip package has the nginx.exe Startup File. After the download, put it in a directory on your local disk, enter the directory in the cmd command box, and enter start nginx You can start the nginx service. The page fo

Linux beginners: (1) Linux overview and linux beginners Overview Blog Park (FOREVER_ENJOY): http://www.cnblogs.com/zyx1314/ This article is copyrighted by the author! Indicate the connection between the author and the original article Structure of Linux Directories In Linux, all files in the system are organized and managed in a directory. In Linux, all the files in the system are classified and h

Html/Css (article 2 for beginners) and css beginners 1. In actual work, a team is working on a project, not a person. Multi-person collaboration means that each team has its ownNaming Conventions.1. css selection character naming, standard.2. There are naming conventions. Ii. css selection operator: Specifies the object (range) to which the css style applies)1. Tag selector: For html tags2. id selector: For