Mysql practice-level commands for beginners

Mysql practice level: mysql beginners common command Creation Time: 4.04.08.24 modification time: 2014.09.26 from the perspective of an O & M engineer and DBA novice, learn and practice to master mysql related operations. 1. Login Mysql practice

Install MongoDB using the source code in Linux

I am also studying node. js and need to use the mongodb database. Although I have used the mongdb database in the company before, because of work, we have not been able to perform the following operations in the development environment. I am also

MongoDB index concepts and usage

Index, which allows you to quickly access specific information in a database table. An index is a structure used to sort the values of one or more columns in a database table. For example, the name of the employee table Index, which allows you to

Resolved an error reporting ORA-01034 and ORA-27101 when connecting Oracle11g

Resolved an error reporting ORA-01034 and ORA-27101 when connecting Oracle11g Resolving ORA-01034 and ORA-27101 errors when connecting to Oracle 11g My local database version installed is Oracle 11G R2, when using plsql connection, the

Methods and software related to MySQL Architecture Design

Recently, I learned a lot about MySQL database architecture, searched a lot of related information and articles on the Internet, and read it in a rough manner. I found that architecture-related things are unmeasurable. Recently, I learned a lot

Sort the media download addresses before Oracle10g

Sort out the official Oracle10g media for friends who need it. Sort out the official Oracle 10g media for friends who need it. Homepage → Database Technology Background:Read News Oracle media sorting before 10 GB [Date: 2014-10-10

Key to enterprise application of NoSQL

The discussion about whether NoSQL can be competent for enterprise-level databases is rampant. The focus of attention is that the environment of NoSQL databases is uncertain and changing. Some No The discussion about whether NoSQL can be competent

How to archive log files when using RMAN backup

I went to a customer yesterday to deploy the RMAN backup. when running the shell script, I was prompted that I could not find the archive log, because the customer only performed the EXPDP logical export backup for the database, and each I went to a

Silent Installation of Oracle10g Database Software + upgrade patch + manual database creation

Generally, Oracle database software is installed on the OUI gui. However, some UnixLinux systems do not have a graphical system installed, and therefore the GUI cannot be used for security Generally, Oracle database software is installed on the OUI

MacOSXMavericksorYosemite install Nginx, PHP, Mysql,

Translation: blog. frd. mninstall-nginx-php-fpm-mysql-and-phpmyadmin-on-OS-x-mavericks-using-homebrew recently made Ubuntu very uncomfortable. First, it was difficult to use the input method, sogou released Ubuntu14.04's input method, but it is far

HBase Performance Tuning

Because the official BookPerformanceTuning section does not index by configuration item, it cannot achieve quick query. So I re-organized the original text with the configuration item drive and added some of my own understandings. If there is any

Sorting and principles of Hadoop job optimization parameters

Original? Www.blogjava.netwangxinsh55archive20141119420297.htmlwww.linuxidc.comLinux2012-0151615.htm 1Mapsidetuning parameter 1.1MapTask running internal principle when maptask start operation and generate intermediate data, the intermediate result

Download the MongoDB PPT for the Beijing 2014 Conference

Download: pan. baidu. coms1jG3Odzo # path % 252FBJ2014 content: mongomongodb introduction-KamalBrar. p Download: MongoDB Beijing 2014-MongoDB Diagnostics and Debugging-Asya.pdf MongoDB Beijing 2014-MongoDB and Hadoop perfect big data solution-Zhou

Redis data persistence

RDB is a compact copy of Redis Data Set Based on time points, and is very suitable for backup scenarios. For example, you can archive a small RDB file every hour and increase the size of the RDB file every day. RDB is a compact copy of Redis Data

The NetworkInterfaceUsage of the RAC installation OUI is reported because the invalid hosts content is not commented.

When AIXRAC is installed, INS-41112 is reported on NetworkInterfaceUsage of OUI, so that the installation cannot continue with the error record digest Cause? -? Installerhasdetectedthatnetworkinterfaceen6doesnotmaintainconnectivityonallclusternodes.

Step 3: Enable FederatedEngine for MySQL in Windows

[1] Enter mysql installation directory mysqlbin [2] Open my. ini: Insert a line "federated" after [mysqld], save [3], restart mysql, enter mysql, and enter showengines. If FEDERATED is displayed after YES, it is enabled successfully. Note: federated

Pythongevent + zmq + redis with small practices

When talking with darkforday a few days ago, I heard that the libev-based gevent library in Python is also worth noting in coding and performance. A brief introduction to gevent (from tutorial): "response. ItprovidesacleanAPIforavarietyofconcu When

Real-time data synchronization between MySQL Databases and HDFS

It is still the central link for batch delivery to ApacheHadoop through MapReduce ., However, Hadoop (Distributed File System) has experienced significant development as the pressure to obtain competitive advantages from the "super-thinking speed"

Reprinted-HowtorenameeverythingonOracleDatabase (re

I have read a summary article about the oraclerename syntax. The original address Renamingredologmembers; Renamingtablespaces; namespaces; Renamingconstraints; Renamingschemaobjects (tables, views, sequences, privat I have read a summary article

Oracle Database recovery ORA-00600 [25026] Error Parsing

The ORA-00600 [25026] error is generally caused by an invalid tablespaceID or RDBA when ORACLE checks and detects tablespace tablespaces. The meaning of the two variables is: arg [a] tablespaceIDArg [B] rdbaORA-00600 [25026] Error belongs to the

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