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  Detailed explanation of MySQL- long transaction

  Preface: "introduction to MySQL" series of articles have been completed, in the future, my article will still be based on MySQL, mainly recording the recent work and study encountered scenes or their own feelings and ideas, the follow-up articles may not be so coherent, but I still hope you will support me. To get back to the point, this article

  2022-06-01 09:37:03 Views: 299
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  Characteristics of the use of system resources by several typical applications

  1) Web applications dominated by static content are mostly a, small files, and frequent read operations, which mainly consume content b and optimization, and try to use cache in the first section. If the visit volume is large, when using cdnc and high concurrent access, there is another, if the network bandwidth bottleneck, customer traffic.

  2022-06-01 09:37:03 Views: 217
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  SQL Server and Mysql use the cmd command to query all database, table, and field names

  1. Use sqlserver1, query all databases 2, query all table names in the current database 3, query all field names in the table 2, use Mysql1, query all databases 2, query all table names in the current database 3, query all field names in the table

  2022-06-01 09:36:45 Views: 263
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  Oracle create user

  The first step (connect to oracle): in the dos interface (the following are operated in the dos interface), enter: sqlplus sang/12345 (write a user name and password casually) @ orcl as sysdba step 2 (create a user and authorize it): cre

  2022-06-01 09:36:45 Views: 251
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  The use of `symbol in mysql

  If the database fields are keywords reserved by sql, you need to include these fields with ``when writing sql statements, otherwise syntax errors will be reported.

  2022-06-01 09:36:45 Views: 220
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  How c#.net accesses SQL Server database

  How does c#.net access SQLServer database 1, import namespace using System.Data.SqlClient; / / connect to SQLServer database dedicated 2, create connection SqlConnecti

  2022-06-01 09:36:44 Views: 265
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  JDBC series: (1) connect to the database through JDBC

  1. What is JDBC2, the three ways of JDBC connecting to the database 2.1,2.2,2.2,2.3,3.Internal implementation of com.mysql.jdbc.Driver, what is JDBC using jav

  2022-06-01 09:36:44 Views: 215
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  The Foundation of postgresql Database

  Create a read-only account 1.1 to initialize the account login [root@localhost ~] # psql-U postgres1.2 to create a user postgres=# create role develop with logi

  2022-06-01 09:36:44 Views: 246
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  Primary key conflict resolution during primary primary replication

  The problem that must be avoided under master master replication-synchronization conflict example: create table stu (id int primary key auto_increment.). Two mysql have equal status.

  2022-06-01 09:36:42 Views: 212
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  Group by exercise

  Group by exercise experiment form creation field explanation: xh: student number xh: name nl: age create table student (xh number,xm varchar2 (4), nl int); insert int

  2022-06-01 09:36:36 Views: 247
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  Real-time monitoring of oracle data changes by zabbix

  As shown in the title, you can use zabbix to monitor data changes in the database in real time, such as the number of orders in the last hour. In this way, we can easily observe some data changes in databases such as oracle through the web interface of zabbix. At the same time, we can also

  2022-06-01 09:36:36 Views: 215
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  Abin backup script

  #! / bin/sh## checks whether there is a full backup when it is executed for the first time, otherwise create a full backup first # when you run it again, it will perform an incremental backup of INNOBACKUPEX_PATH based on the previous full backup according to the settings in the script

  2022-06-01 09:36:36 Views: 240
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  Import a local orcale file to a remote orcale database locally in a non-dmp environment

  The local server does not have the orcale database and client installed, nor does it install plsql. So the imp command for cmd is not available. Install the orcale client download address locally, install and configure path. After installation, you can use the imp command to import the dmp file. Installation I

  2022-06-01 09:36:36 Views: 246
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  Master High Availability installation configuration

  MHA (Master High Availability) is currently a relatively mature solution in MySQL high availability, and it is a set of excellent high availability software for failover and master-slave upgrade in MySQL high availability environment. In MySQ

  2022-06-01 09:36:35 Views: 278
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  Oracle rman cross-version recovery 11.2.0.3-11.2.0.4

  1. Switch between archives and perform rman full library backup 2. On the server that was transmitted. 3. Restore it-- create the corresponding directory 1. Modify the configuration file and modify the configuration parameters proportionally to create the corresponding directory mkdir-p / home/opt/ora based on these directory changes

  2022-06-01 09:36:05 Views: 296
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  Oracle Flex ASM and Flex clusters

  Oracle Flex ASM and Flex cluster Oracle RAC 12c introduce two new concepts: central nodes: as in previous versions, they are connected to each other over a private network and have direct access to shared storage. These nodes can access Or directly

  2022-06-01 09:36:05 Views: 249
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  Oracle stored procedure-gets the coordinates in the database to the specified longitude and latitude distance

  New project requirements: combined with Baidu map, specify a location in the map, and get the location and information of all the units stored in the database around this location marked on the map. So I first wrote a stored procedure of oracle, which was written purely by groping. The functions required in the background are as follows: first, count

  2022-06-01 09:36:05 Views: 293
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  Oracle operation and maintenance-common SQL

  # V$active_session_history##

  2022-06-01 09:36:04 Views: 221
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  Based on Ubuntu14.04 Zabbix2.2.15 (version) Server side installation

  2022-06-01 09:35:34 Views: 286
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  PHP+ECharts series-bar chart (bar chart) example 1

  ECharts

  More Database

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    What are the differences between the storage engines commonly used in MySQL?

    This article is to share with you about how common storage engines in MySQL differ from each other. The editor thought it was very practical, so I shared it with you as a reference. Let's follow the editor and have a look. The four storage engines commonly used in MySQL are: MyISAM storage

    2022-06-01 03:50:57Details

  • 

    The strongest snail has unlimited resources to buy the cracked version so that you can play continuously.

    The strongest snail unlimited resources in-house cracked version is a very popular leisure adventure nurturance mobile game recently. The painting style of the game is very strange, with a lot of interesting copy content challenges, players are like watching the story while playing the game, very interesting. In the game, you will change.

    2022-06-01 04:48:35Details

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    The extraction time of bid evaluation experts, how long in advance is appropriate?

    Article 22 of the http://www.zhaobiao.cn/ measures for the Administration of experts on Evaluation of Government Procurement (hereinafter referred to as the measures) stipulates that "in principle, the time for the selection of evaluation experts shall be half a day or one day before the bid opening, and shall not exceed two days under special circumstances.

    2022-06-01 06:18:08Details

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    What are the differences in the implementation of delete table operation in MySQL

    This article is to share with you about the differences in the implementation of table deletion in MySQL. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look. This paper mainly talks about three operations of deleting tables in mysql, delete statement and tru.

    2022-05-31 23:37:44Details

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