dba for beginners

Tags: Web services Internet Database Linux How to become a MySQL DBAThe success of the Internet's rapid development has benefited from the support of MySQL database. MySQL itself is developing faster, with significant performance improvements, and allows traditional businesses to use MySQL to provide services. It seems that the MySQL DBA's Gap is very large. So welcome to the MySQL DBA team.A classmate referred to MySQL

6 common python errors and solutions for beginners and 6 python reports for beginners This article lists some common errors for new users to write code. Some errors are careless. However, for new users, it takes a long time to solve them. So I will summarize some of the problems I encountered here. I hope to help my new friends. 1. The NameError variable name is incorrect. Error: >>> print aTraceback (most

30 FAQs for beginners of Java and FAQs for beginners of java This article answers 30 common questions for beginners of Java beginners. Can I use % to divide it by a decimal number? Is the effect of a + = B different from that of a + B? Why does it take a lot of time to declare an array? Why does the JAVA library not ne

A summary of the operational difficulties of python beginners (this article is required for beginners ). As follows: 1. switch between the disk and the disk in cmd directly D or d: 2. Find the directory in the current disk or file and run dir directly. 3. To add a folder to a disk, use the cd space to specify the target file cd p. 4. After writing the first letter of the file, press the tab key to automatic

17 errors frequently encountered by beginners of python, 17 Errors for beginners of python 1) forget to add (resulting in "SyntaxError: invalid syntax") at the end of the if, elif, else, for, while, class, and def declaration ") This error will occur in code similar to the following: if spam== 42 print('Hello!') 2) use = instead of = (resulting in "SyntaxError: invalid syntax ") = Is the value assignment o

10 PHP skills that are very useful for beginners and for beginners. 10 Useful PHP skills for beginners. This article describes some tips and skills for improving and optimizing php code for your reference. the specific content is as follows: 1. do not use 10 PHP skills that are useful to beginners. This article introd

IbatisNet tutorials for beginners and ibatisnet beginners1. What is IbatisNet:Many people have heard of Ibatis. Yes, IbatisNet Is A porting version of Ibatis on. net, so they are basically similar. Therefore, IbatisNet is naturally a lightweight ORM framework, so we think of hibnate and Nhibnate again. After learning IbatisNet, I will make a simple comparison with Nhibnate. Strictly speaking, IbatisNet is not a very orthodox ORM solution. Unlike nhib.

Javascript basics and javascript beginners are recommended in javascript beginners. Some time ago, when I read the javascript advanced tutorial, I found many basic javascript concepts that I don't understand. I searched the internet and saw that 《Basic javascript tutorial (version 8th)I bought one. Author: (US) Tom Negrino Dori Smith Translator: Chen Jian Liu Jing book series name: Turing Program Design S

Common Questions and answers for beginners of python, and questions for beginners of python 1. lambda Functions The function format is lambda keys: express anonymous function lambda is an expression function that accepts the keys parameter and returns the value of the expression. Therefore, no return or function name is required. It is often used in functions that require key parameters, such as sorted. 2 t

The daily work and responsibilities of DBAs in Oracle --- [1] The following summary is a summary written in "Deep Oracle", which corresponds to the amount of funds learned. 1. Let's take a look at Oracle's learning route: 2. learning basics: I have learned basic Oracle knowledge and have a general understanding of Oracle. 3. Objective: To give students who have learned the basics of Oracle a better understanding of the Oracle mechanism. Understand the work and capability requirements of OracleDB

With the rapid development of Oracle technology and the market, the number of people working in Oracle DBA is getting bigger and bigger. I can see from some posts that I often post on forums and communities, many people are eager to work in this field now or in the future, and the market demand is also very large, but it is not hard to see that each company has higher requirements for the position of DBA, o

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

The vast majority of databases run on Linux and UNIX platforms, and as the X86 platform's computing power nears or exceeds minicomputer, and in the tide of the IoE, more and more database environments run on Linux platforms.The Linux system is large and complex, summarized as a DBA, some basic management, network management, advanced applications, performance diagnostics, pipeline complex applications, hardware-related sensing commands need to master,

Oracle Pen questions Oracle DBA face questions and answers (foreign companies)Oracle Database Pen Test DBAOracle Interview Pen test for international large companiesOracle Database DBA Interview Questions1. How many memory layers are in the shared pool?2. How did you find the RMAN catalog if a particular archive log has been backed-up?3. How can I tell how much it's left in a given file system and how much

SYS and SYSTEM user differences 1 The most important difference, the importance of storing data is different SYS the base tables and views of all Oracle's data dictionaries are stored in the SYS user, which is critical to the operation of Oracle and is maintained by the database itself and cannot be manually changed by any user. The SYS user has roles or permissions such as Dba,sysdba,sysoper and is the highest user of Oracle permissions. The system

Oracle Pen questions Oracle DBA face questions and answers (foreign companies)Oracle Database Pen Test DBAOracle Interview Pen test for international large companiesOracle Database DBA Interview Questions1. How many memory layers are in the shared pool?2. How did you find the RMAN catalog if a particular archive log has been backed-up?3. How can I tell how much it's left in a given file system and how much

Today we have a guest Steve travels in the UKWell, I know a simple answer is that the DBA is a database administrator, but what role does it play? If you had to describe it to a non-technical person, what would you say? The DBA plays many different roles and functions. I have seen or used some roles or features: Install SQL Server, manage server performance including disk space usage, backup management, acc

Label:Becoming a qualified DBA is not enough to understand how to encoding some SQL statements and simple database management, so a qualified DBA needs to understand every aspect of it, and can have the ability to debug performance, hardware, and software problems. This article will cover a few things that a DBA needs to understand, and the individual feels that

Generally, you can log on to the ISQLPLUS website http: // ip: Port/isqlplus. after entering the website, you can directly log on to the Database User Logon page and use the common users in the database to log on. The DBA user logs on to the isqlpus website http: // ip: Port/isqlplus/DBA. after entering the website, a login box is displayed, you must first enter the iSQL * Plus

Database version 11.2.0.4 The experiment idea is:--The trace information of the database open, can refer to: http://blog.csdn.net/q947817003/article/details/17025489 File#1 block#1==>root dba==>struct Ktetb That is, start with the system's data file header: File#1 block#1 to locate the root DBA, and then within the block of the root DBA, find the location of t