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  Build an elegant OneProxy environment

  About OneProxy (civilian software) OneProxy for MySQL can reuse connections from different applications to the back-end database and effectively reduce the number of concurrent connections to the database; it can instantly kick out unavailable nodes and forward application requests to other available nodes to ensure business services

  2022-06-01 10:20:38 Views: 266
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  Connect mysql tool NavicatForMysql under Windows

  Software introduction Navicat for MySQL is a powerful MySQL database management and development tool that provides a set of powerful and cutting-edge mysql tools for professional developers.

  2022-06-01 10:20:08 Views: 263
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  The class12 driver of oracle does not realize the storage of clob or blob by jdbc, the solution

  An exception occurs when saving large fields clob or blob using native jdbc: ERROR [pool-12-thread-1] PartitionConsumerThread.run (128) | java.l

  2022-06-01 10:20:07 Views: 212
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  Redis Note arrangement (3): advanced Operations and Advanced parts

  [TOC] Redis publish subscription Redis publish subscription (pub/sub) is a mode of message communication: the sender (pub) sends the message and the subscriber (sub) receives the message. Redis clients can subscribe to any number of channels. The following figure shows the channel chann

  2022-06-01 10:20:04 Views: 247
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  How to add encrypted data to the Oracle table by default

  That is to set the Q field, ah, this is jlfalfdkj2kljflsdkl==chr (20). Jlfalfdkj2kljflsdkl is the original value of the character. Alter table 123 add con is obtained by encryption.

  2022-06-01 10:20:03 Views: 292
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  DISTINCT usage

  When querying the data table, it is necessary to filter the duplicate results and remove the duplicates. SQL SERVER:select distinct 'column name' from 'table name'; Note: DISTINCT must be written before the column name.

  2022-06-01 10:20:03 Views: 297
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  My_print_defaults: Can't read dir of'/ etc/my.cnf.

  An error occurred during the installation of the source code of mariadb 10.1.19. My_print_defaults: Can't read dir of'/ etc/my.cnf.d/' solution: create a directory: mkdir / etc

  2022-06-01 10:20:00 Views: 271
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  Mongodb replica set maintenance

  1. Summarize the main work of mongodb replica set maintenance: 1. Check the status of the replica set (cluster status, synchronization delay, mongostate of a single library) 2, add and delete nodes, stop nodes, shutdownmongodb replica set cluster synchronization mechanism data replication destination

  2022-06-01 10:19:52 Views: 211
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  SQL Syntax prompt tool SQL Prompt-- add NOT NUL

  SQL Prompt is a practical SQL grammar prompt tool. SQL Prompt automatically retrieves according to the object name, syntax and code snippet of the database to provide users with appropriate code choices. Automatic script settings make code easy to read-when developers are not familiar with scripts

  2022-06-01 10:19:42 Views: 242
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  [MYSQL Series] [basic Edition] Chapter 1 installation and testing of MYSQL

  1. Installation and testing of MYSQL 1.1 what is a database, what is its function, and what are its characteristics 1.1.1 Database,DB is a data warehouse; 1.1.2 is used to save and manage data

  2022-06-01 10:19:27 Views: 208
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  Talking about Database-transaction (mysql)

  A transaction is actually a combination of adding and deleting operations to the database. It can be understood that when you type 1000 yuan into someone, two changes will take place in the database. One is that your money is reduced. The other is that that person's money has increased. These two operations must be satisfied at the same time, otherwise the problem will occur.

  2022-06-01 10:19:27 Views: 266
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  Operation and maintenance of Information Construction

  With the deepening of organizational information construction, the focus of informatization has shifted from IT construction to IT operation and maintenance. the increasing difficulty of IT operation and maintenance, the rising cost of IT operation and maintenance, the uneven service level of IT operation and maintenance, and the frequent occurrence of emergencies have caused some trouble to IT managers, so the root cause is 1.1I.

  2022-06-01 10:19:18 Views: 290
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  Mongodb error: Mon Mar 25 10:41:10 Error: couldn't connect to server 127.0.0.1 shell/mongo.js:84

  Mongodb encountered a problem when starting mongodb: MongoDB shell version: 2.0.6connecting to: testMon Mar 25 10:41:10 Error

  2022-06-01 10:19:11 Views: 218
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  Password verification of redis and related configuration of Sentinel

  Background as we know, redis does not configure a password by default, which makes it possible to log in to redis without verification as long as there is an IP+Port of redis. If your redis happens to be open on the public network, it is easy to be *, to obtain the permissions of your system, via

  2022-06-01 10:19:11 Views: 269
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  Backup and recovery of mysql

  1. Mysql backup 1. Mysqldump logical backup, supporting warm backup, hot backup, full backup using mysqldump, binlog incremental backup mysqldump-utest-ptest-h292.168.0.204

  2022-06-01 10:19:11 Views: 254
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  Will database table partitioning improve insertion efficiency?

  What this article shares with you is about whether database table partitioning will improve insertion efficiency. The editor thinks it is very practical, so I share it with you. I hope you can get something after reading this article. Let's take a look at it with the editor. Database table partitioning can improve insertion efficiency; database tables

  2022-06-01 10:19:10 Views: 265
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  Quickly force the kill goldengate exception process

  Goldengate cannot shut down the process normally by using stop when it encounters a big transaction or exception, and it is a headache when it encounters this problem, so help finds two mass killers. From now on, you don't have to worry about stop not dropping the process. If you encounter a big transaction or build

  2022-06-01 10:19:10 Views: 289
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  Redmine deployment

  System environment (minimized installation): LSB Version:: base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarchDistributor I

  2022-06-01 10:18:45 Views: 256
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  Performance_schema database table structure is damaged

  [ERROR] Native table 'performance_schema'.'session_status' has the wrong structure table damage test [mysql@roidb

  2022-06-01 10:18:42 Views: 252
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  How to create mysql database tables

  This article is to share with you about how to create mysql database data tables, the editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article. Let's take a look at it with the editor. The method of creating data tables in mysql database is

  2022-06-01 10:18:42 Views: 253