Database Administrator

1. In order to use scp in Linux, you do not need to enter a password. ssh is another key pair verification method. 1. Use the ssh-keygen command to generate a key. In addition to the password, select the default value: Press enter. [Root @ xxx

Uninstall MySQL in Linux 1. Check whether MySQL is installed before. Command: rpm-qa | grep-I MySQL We can see two MySQL packages: MySQL-4.1.12-3.RHEL4.1 MySQLclient10-3.23.58-4.RHEL4.1 2. Delete MySQL DELETE command: rpm-e -- nodeps package

I. Oracle Enterprise Linux 5.0: Required component installation:GNOME Desktop EnvironmentEditorsGraphical InternetText-based InternetDevelopment LibrariesDevelopment ToolsServer Configuration ToolsAdministration ToolsBaseSystem ToolsX Window System 2

I have been in the company for a while and am currently responsible for the database design and development of the project. A few days ago, I encountered a problem where MySQL could not be installed on red-flag Linux. When installing MySQL5.1 using

In Linux, MySQL database errors are caused by power failure or abnormal shutdown. MySQL provides multiple data Detection and Recovery Tools for different data table types. These tools are: Myisamchk Isamchk Here, myisamchk applies to MYISAM data

Today, a friend asked me to install MySQL for him. I was surprised to say that I had installed MySQL N times and never had such a situation, however, when I install the service, the service cannot be started. When the installation is complete and

# Shell mysql **************************************** #! /Bin/bash Olname = erik # Old value, that is, the value to be replaced Nwname = erik # new value, that is, the value to be replaced Domain = @ set-china.net # suffix, here is used to

When Oracle is installed in Linux today, the following error occurs when the xhost service is started: _ X11TransSocketINETConnect () can't get address for localhost: 6001: Name >>or service not known Error: Can't open display: localhost: 1.0

1. An error occurred while installing the Mysql *. rpm package. Error: Failed dependencies:Perl (CGI) is needed by MySQL-client-4.0.26-0Perl (DBI) is needed by MySQL-client-4.0.26-0Error: Failed dependencies:Perl (DBI) is needed by MySQL-server-4.0.2

After learning about Struts, I used a lot of detours to configure the Struts data source. Now I will share my experience with new users like me. I hope you will not take a detour. I am using MyEclipse6.5. First of all, define User Libraries; In

Although the ESRI official documentation on how to install ArcSDE has been very detailed (in English), and there are a lot of reference materials online, but here we are still for your own habits and for Ubuntu, make a description in Chinese, just

The following are three environment tests commonly used by network_link. 1. Data on the server is exported to the specified client. 2. migrate data between different databases. 3. migrate data between different users in the same database. 1. Export

Incremental Backup greatly reduces the cost of Oracle backup time, but this mechanism may be cumbersome In versions 10 GB and later, you can use the Incremental backup of RMAN to roll the image copy of data files to the specified time point. This

I wrote MySQL 5.1 master-slave configuration a long time ago. Now MySQL has released 5.6.10 and has made many optimizations in the master-slave replication function, especially the introduction of GTID (Global Transaction ID, it is worth writing

(I) What is it? Records detailed information about MySQL Server startup and shutdown, and severe warnings and errors during running. Mysql> show variables like 'Log _ error ';+ --------------- + --------------------------------- +| Variable_name |

The wave of big data is surging, and a new information technology revolution is about to begin. "Spring River plumbing duck Xianzhi", as a database practitioner, is particularly profound to me. However, whether it is Oracle's EXADATA or MySQL's

1. Check if the DISPLAYvariable is set. Failed Solution: # Xhost + // switch to the root user input # Su-Oracle // switch to an oracle user $./RunInstaller // run the installer   Xhost is used to control the access permissions of X

In the production environment, mysql DBAs are worried about changing the mysql table structure due to business needs, especially when the data volume is particularly large, with millions or even tens of millions of data. Analyticdb 5.6 supports

I started the Oracle database course. Textbooks and teachers both use 10 Gb of lectures. However, Oracle 11g has been released for a long time, and its functions tend to be stable. It also provides complete online materials, therefore, we plan to

1. Insert Buffer-It brings performance to the InnoDB Storage EngineLike Data Pages, insert buffering is an integral part of a physical page.(1) The primary key is the unique identifier of the row. In the application, the row records are inserted in