dba for dummies

and understand, so they have to admire her profound and simple abilities. I think the Writing Method of this book is worth learning. You may ask me why I want to write something? Over the past few years, I have been surrounded by a few good friends who have had a deep feeling between us. It can be said that it was throughout the golden period of my DBA career. Till now I have left. I am still in love with everyone. I really want to write this story a

MySQL databases can be said to be one of the most common and commonly used databases of DBAs. To facilitate your use, MySQLDBA summarizes some of the most common and frequently used experience and skills of MySQL databases, share with you! MySQL databases can be said to be one of the most common and commonly used databases of DBAs. To facilitate your use, the old MySQL DBA summarizes some of the most common and frequently used experience and skills of

Oracle DBA Study Notes-STARTUP detailed description: Refer to database version: 10.0.2 I. Command Parsing STARTUP options | upgrade_options options is: [FORCE] [RESTRICT] [PFILE = filename] [QUIET] [MOUNT [dbname] | [OPEN [open_options] [dbname] | NOMOUNT], the three stages of NOMOUNT, MOUNT, and OPEN are startup. They cannot exist in the command at the same time. Here, open_options is: READ {ONLY | WRITE [RECOVER]} | RECOVER. Upgrade_options: [PFILE

The following articles mainly introduce the example of Oracle Database DBA interview questions. This article describes the basic mode of Oracle Database DBA interview questions in a one-Answer manner, the following is an introduction to the related interview questions. I hope you will get some benefits. 1. Explain the differences between cold backup and hot backup and their respective advantages Answer: Hot

Previous:Oracle DBA Study Notes-start and close DatabasesNext article: Oracle DBA Study Notes-log files (using logminer to analyze logs) 1Control File Control File Information:The size of the control file is related to the settings when the database is created. (1)Database creation time information (2)Database Name, table space name (3)Related data file, redo log file name, location, online status i

16 database DBA permissions for a certain power system SQL Injection 16 database DBA permissions for a certain power system SQL InjectionDetailed description: **.**.**.**/ POST/loginAction. do HTTP/1.1Content-Length: 52Content-Type: application/x-www-form-urlencodedReferer :**. **. **. **: 80/Cookie: JSESSIONID = D09C0D2B82903DF00607788EA2B6310DHost :**. **. **. ** Connection: Keep-aliveAccept-Encoding:

SQL injection error reported for DBA permissions at a location in the giant Network An error message for injection of DBA permissions at a location in the giant Network POST/admin/login. php HTTP/1.1Content-Length: 87Content-Type: application/x-www-form-urlencodedReferer: http://jf.ztgame.comHost: jf. ztgame. comConnection: Keep-aliveAccept-Encoding: gzip, deflateUser-Agent: Mozilla/5.0 (Windows NT 6.1; W

Why does the SQL Server DBA learn PowerShell? From: http://www.simple-talk.com/ SQL /database-administration/why-this-sql-server-dba-is-learning-powershell/ Joe. TJ is used only for the purpose of disseminating information. I started learning PowerShell because I was looking for a fast and efficient way to collect information about my SQL Servers and better manage my server workload. I thought that I was le

A dba questionNote: You can select and answer the following questions based on your own situation. You do not have to answer all the questions. You can also directly contact the interviewer to answer the questions without answering them. I. SQL tuning class1: List several table Connection MethodsHash join/merge join/nest loop (cluster join)/index join2: How to view SQL Execution plans without using third-party toolsSet autot onExplain plan set stateme

Generally, database users are granted the connect, resource, and DBA roles. Users with these permissions can perform operations conveniently but arbitrarily. It is common to create an object in the users tablespace. I think of a technical method. The procedure is as follows: Step 1: create a user and handle Permissions SQL> Conn/As sysdbaConnected.SQL> create user usr_xx identified by usr_xx default tablespace tbs_yy; User Created. SQL> grant connect

I wrote a mess in the previous article, so I opened a new one. Start with the preparation of the database. 1. Create a tablespace: SQL> Create tablespace wings datafile 'd: \ app \ User \ oradata \ L \ wings_f01.dbf 'size 50 m autoextend on next 50 m maxsize 1024 m; The above is only one data file at a time, and the following is more than one file: SQL> Create tablespace wings_temp datafile 'd: \ app \ User \ oradata \ CMDL \ wings_tf01.dbf 'size 50 m autoextend on next 50 m maxs

backup method and policy? What is the network file configuration? 19. Check the recent alert logs to obtain useful information. 20. run several performance analysis reports to see how the system is running recently. 21. Run an RDA report to collect the complete system status report. Well, with this basic information (incomplete), you have a general understanding of the system you are new to. Next, you can analyze it in depth, then we will formulate a set of O M specifications that meet the act

password; Create User Username identified by password default tablespace users quota 10 m on users; B. Change the password Alter User Username identified by pass; Change the password from password to pass. You can also change the password after logging in. C. delete a user Drop User Username; Drop User Username cascade; 5. Three standard roles (role): connect, resource, and DBA. I. Connect connection and login Permissions Ii. re

If you do not know the password for the System,sys user in Oracle, you can retrieve it as follows:First, the database is entered as a regular user:Execute the following command in Sql*plus:Sql>connect/as Sysdba (can also be connected in the following way: Sql>connect internal)Sql>alter user sys identified by SYS; (The password for user sys will change to SYS after carriage return)Similarly, you can change the system passwordSql>alter user system identified by system; (The password for user syste

A few days ago on micro-blog saw this "iDataForum2010 China Internet Database Technology Forum", signed up for. It's been a day today.This technical forum is organized by Taobao DBA. Organizers hope to become a technical forum unrelated to specific enterprises. According to organizers, this is the second session, the first is held in Hangzhou.Of course, the main DBA is to attend the meeting. Sat full of a c

Oracle Oracle DAB two day crash course The purpose of this course is to supplement the DBA's two-day quick (2 days dba) manual. In this course, you will learn more about the tasks outlined in the DBA's two-day quick (2 days dba) manual, and include step-by-step instructions. To view the information for this course, click the following Chapter title: Course List 1 What are the elements of the Management

Tags: add base One Login 4.0 required--RIP database operationFor a mature DBA to be familiar with the Glogin.sql file, then use it to better circumvent some operational risks.1. View Glogin.sql Contentis actually a login database can be executed automatically a script, simple can understand.2. Add ContentThe following is something we can add, which we add according to our needs.SQL> defineDEFINE _DATE = "13-FEB-2018 21:05:01" (CHAR)DEFINE _C

Sqlplus Execution: the@?/rdbms/admin/awrrpt Production snapshot, a point in time, and then the next point in time.2--attachment Job First execution step: 1) SQLPLUS in the execution of production snapshot 2 time points; 2) generate an AWR report. Analyze the contents of the report. Related to the Command window length adjustment view; 3) for sqlid, view the corresponding SQL execution performance analysis; 4) switch to the same SQL Sqlid after adding the init condition to view the corresponding