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  Persistence of redis

  Why should it be persistent? Without considering the server downtime, it is not necessary to save the data in memory to disk for persistence. Persistence is a remedy specially prepared for downtime. Redis has two persistence mechanisms: rdb and aof. 1. RDB (Redis D

  2022-06-01 16:55:46 Views: 254
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  12c Oracle ADG log switch hang

  Environment 12c ADG environment 2, phenomenon description main database log switch stuck (hang) SQL > alter system switch logfile; 3, process 1, view log $tail-f al*.logMon Ja

  2022-06-01 16:55:45 Views: 267
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  [MySQL] mysqldump backup and recovery

  Summary: mysqldump is commonly used for logical backups of MySQL databases. Backup operation: 1. Back up all libraries: mysqldump-uroot-pyourpass-- all-databases > / tmp/all.dump

  2022-06-01 16:55:45 Views: 295
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  An overview of all statements in mysql

  Reference body: http://c.biancheng.net/view/2600.html1.CREATE main sentence CREATE DATABASE IF NOT EXISTS < database name > DEFAULT CHA

  2022-06-01 16:55:45 Views: 214
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  MariaDB uses Command Intermediate articles

  Directory: 1. Mysql user account 2, basic View Command 3, Common components of Relational Database 4, DDL: Data Defination Language data definition statement Common commands CREATE, DROP, ALTER use example 5

  2022-06-01 16:55:45 Views: 263
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  MySQL basic operation command

  MySQL basic operation command 1. View MySQL process ps-ef | grep mysql | grep-v grep2, view MySQL port ss-lnt | grep 33063, launch mysq of MySQL

  2022-06-01 16:55:44 Views: 209
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  Web Human Resources Information system Development Log ③

  The third phase (May 21-June 20, 2017): the focus of the main development content is shifted to the user business management, and the business logic is to use PHP programs to call database tables to meet the needs of business management. Besides installing the PDO driver, the database also needs to install the corresponding driver of ODBC, so it is convenient to

  2022-06-01 16:55:14 Views: 298
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  Install mongodb under Centos7

  MongoDB, written by C++ language, is a database based on distributed file storage, which aims to provide scalable and high-performance data storage solutions for web applications. It is a product between relational database and non-relational database, and it is the most functional non-relational database.

  2022-06-01 16:55:14 Views: 283
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  Oracle11G installation

  First, create a new oracle user [root@11g ~] # groupadd oinstall [root@11g ~] # groupadd dba [root@11g ~] # useradd-g oinsta

  2022-06-01 16:55:14 Views: 270
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  Permission settings for SQL server database

  First, login rights: there are two authentication modes of SQL server: 1. Windows authentication mode: when using Windows authentication, SQL server will use the Windows user and password in the operating system. That is to say,

  2022-06-01 16:55:02 Views: 208
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  Several methods of string interception in shell script

  1.# intercept, delete the left character and retain the right character. Code: echo ${var#*//} where var is the variable name, # is the operator, * / / indicates that the first / / and all characters on the left are deleted from the left. Example: result: 2.delete # intercept and delete the left character

  2022-06-01 16:54:51 Views: 209
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  C # connects to Access database

  C # connects to Access database Microsoft Office Access is a relational database management system released by Microsoft. It combines the features of MicrosoftJet Database Engine and graphical user interface.

  2022-06-01 16:54:31 Views: 200
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  What is Redis? Just read this one.

  This article is compiled and reproduced by the grape city technical team, please indicate the source: grape city official website, grape city to provide developers with professional development tools, solutions and services, empowered developers. Introduction in the early days of the development of Web applications, relational databases received more and more attention and application because

  2022-06-01 16:54:29 Views: 233
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  Comparison of MySQL5.6, 5.7,8.0 online DDL

  The version of MySQL5.6 later supports online DDL, which is a boon for DBA, but the situation of MySQL5.6, 5.7 and the current version 8.0 is not the same in various DDL. Organize an online DDL pair according to the instructions on the official MySQL website.

  2022-06-01 16:54:26 Views: 269
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  How to use Swingbench, an Oracle testing tool

  1. Install JDK 1.82, install Wingbench, download and decompress 3. Initialize the data of mode SOE, double-click D:\ swingbench\ winbin\ oewizard 24, execute the test, and double-click D:\ swin

  2022-06-01 16:54:20 Views: 277
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  ORACLE12C ADG building

  ORACLE12C_DG configuration main library: Orclstandby library: orclbk1, / etc/hosts configuration 172.16.140.3 node1172.16.140.4 node22, main library force loggingSQL

  2022-06-01 16:54:18 Views: 225
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  Blob type of oracle to sqlserver

  The blob type of oracle corresponds to the p_w_picpath type in sqlserver / * * @ paramsourceConnSource database connection * @ paramtargetConn target database connection * / publicvoi

  2022-06-01 16:54:18 Views: 292
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  NoSql's Mongodb daily operation command arrangement

  1. Db.serverStatus () take a look at the sharding performance information db.serverStatus () .connections; shard to check the number of client connections. The connection between mongod and mongos belongs to persistent connection "connectio".

  2022-06-01 16:54:18 Views: 301
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  FTP (6) realization of FTP virtual user based on MYSQL authentication

  Experiment preparation: this experiment is implemented on two CentOS hosts, one as a FTP server, one as a database server, a CentOS-7 as a MYSQL server and a CentOS-6 as a FTP server. Attention, who is the FTP server here is very important, because there are

  2022-06-01 16:54:18 Views: 278
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  50 suggestions for MongoDB developers Tip25

  This series of articles are translated from "50 Tips and Tricks for MongoDB Developers". I can't find the Chinese version for the time being. Anyway, I have been studying mongodb deeply recently, so I just want to translate it. On the one hand, strengthen yourself.

  2022-06-01 16:54:13 Views: 282