dba for dummies

bbsdb;At this time[[email protected] ~]# Primary server[[email protected] ~]# from the serverwill generate the corresponding table on thewill be changed from server to standalone server, shutdown synchronizationmysql> stop Slave;RM-RF Master.info Relay-log.infoRM-RF localhost-relay-bin*Fault analysis and eliminationCause analysisCannot connect to the master database serverSolutionsCheck the physical connection ping Check authorized usersCheck if there are firewall rulesTurn off SELinuxor Binl

Label:In the original: Toward the Dba[mssql Article] detailed cursorPrevious review: The previous bug introduced some of the less commonly used data filtering methods, this article detailed introduction downstream standard.ConceptTo put it simply, the function of a cursor is to store a result set, and to process the data of this result set on a per-syntax basis.ViewBecause cursors can take the result set out of the process, it increases the burden on

connectionsSql>select Count (*) from v$session where status= ' active ' #查看并发连接数–6. To view the number of connections for a specified programSql>select Count (*) from v$session where program= ' jdbc thin client ' #查看jdbc连接oracle的数目–7. View Database Installation Instance (DBA authority)Sql>select * from V$instance–8. View Run Instance NameSql>show parameter instance_name–9. View database nameSql>show parameter db_name–10. View the database domain name

Original: DBA tool--dmv--View stored procedure execution information through Sys.dm_exec_procedure_statsFor DBAs, there is often some information about the phone's stored procedure: How many times did you execute How does the execution plan What is the average read and write performed How long does it take to execute on average Column Name Data Type Description database_id int

This article for me to learn old boy teacher MySQL DBA senior operation of the study notes, rookie a If there is a wrong place to write, please the great God more guidance, I will thank you very much. hehe ~7.6.1 MySQL Multi-instance common configuration scheme6.1.1 Multi-instance configuration file deployment scenarioImplement multi-instance scenarios by configuring multiple configuration files and multiple startup programs[[emailprotected] ~]# tree

1. Database design and SQL statement additions and deletions.2. I believe that many small partners learn the operation and maintenance courses without the development experience of the database is very tired or even do many years of operation, can not be flexible to write SQL statements and additions to the search!3. Actually learning the database is tricky, first of all we have the initial database type Serversql MySQL and other database types. You have to learn how to install the database http

Tags: DB2 Database Introduction DB2 Introduction DB2 Components"Progressive DB2.DBA system Management, operation and application Case" (New) Reading notes 1Brief History of database development and DB2 introductionThe fundamental purpose of database generation and development is to facilitate data management and application development.The first form of data management is a document, the lack of management method is scattered data, poor centralized ma

over, in order to deepen understanding and memoryIf you have a foundation, you can choose chapters to learn according to your needs.2.3. Instructor Recommendations1. Be sure to follow the course to practice, think more, and work more together on the scene.2. It is a very good learning habit to watch videos and make some records and notes on the side.3. Be sure not to rely too much on video, to learn to read the API and use Baidu, learn to think, learn extrapolate4. Finally, I wish you to learn

L012-oldboy-mysql-dba-lesson12 Graphite Monitoring MySQL can reach the second level Zabbix for MySQL Nagiosxi

Label:stylebloghttpcoloros io using ar file Http://neoremind.net/2011/06/%E4%B8%80%E4%B8%AAdba%E5%AF%B9%E4%BA%8E%E5%BC%80%E5%8F%91%E4%BA%BA%E5%91%98%E4%BD %bf%e7%94%a8mysql%e7%9a%84tips/ just entered the office shortly after a 3-year DBA departure, the last day to give us a training, the following are some key points of the record, MySQL use, table design learning is still very large, In the future will continue to learn the database part of the rele

ObjectiveOracle Database 2 Day DBA is a quick start guide to managing Databases to teach you how to perform routine database administration tasks. The purpose of this book is to help you understand the concepts behind the Oracle database. It teaches you how to perform all the common administrative tasks required to keep the database running, including how to perform basic troubleshooting and performance monitoring activities.ReadersOracle Database 2 D

**************************************** **************************************** **************************************** **** Blue growth note-Chase DBA (7): Basic commands, foundation stone **************************************** ***************************** *************************************** Personal Growth records on the oracle Road, expressed in blue, share the growing emotions, vision and technological changes and growth. Sensitive info

Xtrabackup------ Necessary tools for MySQL DBA Note: 1) Documents Reference http://www.percona.com/docs/wiki/percona-xtrabackup:start 2) mysql version 5.1.50 or later. 1. Introduction and installation of Xtrabackup 1. Xtrabackup is an open-source project of percona. It supports hot backup of innodb, XtraDB, and MyISAM (locks tables). It can be seen as a free alternative to InnoDB Hotbackup. Percona Support for MySQL Benefit Silver(Per Serv

DBA classic interview questions (4) 1. What if the information collection management system (ICM) crashes? Answer: All other managers will continue to work. ICM only processes the queue control request, which means to enable and disable other concurrent managers. 2. How do you accelerate the patching process? Answer: 2.1 you can merge multiple patches. 2.2 you can create a response file for a non-interactive patch. 2.3 you can apply patches with the o

What Oracle DBA should do on a daily, weekly, and monthly basis (I) Check alert on a daily basis. log ② check the environment ● check whether the database instance is working properly ▼ ps-ef | grep ora _ explain select status from v $ instance ● whether the listener is working properly ▼ lsnrctl status ● whether the tablespace is faulty ▼ select tablespace_name, status from dba_tablespace; ● control file, log file is normal running v $ controlfile ru

How does a MySQL DBA get Facebook offer? (1) We will not go into details about how powerful Facebook's technical capabilities are. It is a very challenging and interesting thing to be able to engage in technical work in such a large number of Internet companies. In fact, many programmers from China work at Facebook's headquarters. For example, the following cenalulu detailed the entire process of obtaining Facebook offer on his blog, which is very de

DBA ranking first: Enterprise monitor simplifies MySQL database management. for database administrators, database monitoring plays an important role. Compared with commercial database products such as Oracle and SQL Server, open-source databases have consistently performed poorly in this regard, but after MySQL launched its Enterprise edition, It brings a good news to Enterprise database administrators who use this open-source database: MySQL Enterpr

Medical inquiry a website has the SQL Injection Vulnerability (DBA permission) I want to explain to you what is "Single Love". The so-called "Single Love" means that you have sentenced me to the final death penalty in your heart, and I have sentenced you to life imprisonment! Vulnerability address:Http://oa.xywy.com/ We will capture packets and modify the user name And then drop the ing sqlmap. sqlmap.py -r 4.txt --tamper space2comment.py,base64enco

Floating HOME hotel chain stores Multiple SQL injections on a station (DBA permission/nearly orders) Floating HOME hotel chain Http://www.piaohomeinn.com injection point: Http://www.piaohomeinn.com/hotelList? Shard id = 43 Http://www.piaohomeinn.com/hotelComments? Consumer id = 37 commentId = 4906 # commentSearch Http://www.piaohomeinn.com/ajaxResp? Type = orderDetail ordersign = 20151218124430 oz Ph_user is the user information tabl

An SQL injection tool (dba permission) for a system of China Eastern Airlines) This should be a homepage ....Leaked a large amount of information about the company's employees ..... Http://bus.satrip.com/login/login.aspx_ VIEWSTATE = % blank % 2FaFpHpi1Sy % 2 BBrWwIlz % 2 Bnxc % 3D __ EVENTVALIDATION = % blank USERNAME = 111 PASSWORD = 1 * buttonlogin = % E7 % 99% BB % e9 % 99% 86PASSWORD parameter Solution: Everyone knows...