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An error occurred when executing dbca after installing oracle; sh:/bin/ksh:Nosuch file or directory suspected that the KSH package was not installed, so yum installksh got it! File "/ etc/or
1. Opening the slow query log allows MySQL to record statements that exceed the specified time. By locating and analyzing performance bottlenecks, the performance of the database system can be better optimized. 2. Parameter description: slow_query_log slow query enabled status slow_quer
Real Application Testing is the Oracle 11g test suite, which is not described here. It contains the following two components: SQL Performance Analyzer-SPADatabase Re
Complete installation of mongodb 3.6.6mongodb under Centos7 MongoDB is a database based on distributed file storage. Written in C++ language. Designed to provide scalable high-performance data storage solutions for WEB applications. Mo
Deploy mysql master-slave synchronization one, what is mysql master-slave synchronization master: the database server that is being accessed by the client, is called the master library server. Slave: the database server that automatically synchronizes data on the master database is called the slave server. Configure mysql master-slave synchronization 2.1topology
In this popular season of mongodb, its api is still very rich. Let's take a look at the api address http://api.mongodb.com/python/current/tutorial.html under python.
A Database consists of one or more logical storage units called table spaces (tablespace). Logical storage units in the table space are segments (segment), which can be further divided into data extensions (extent). The data extension is made up of a continuous set of
Day08 MySQL database promotion-transaction 1, transaction Overview: transactions are also an important part of the MySQL database, transactions are made up of one or more sql statements of a single unit. Each unit is interdependent and cannot be separated as a whole, if
What the editor wants to share with you this time is what is the slicing mechanism of Redis Cluster cluster data. The article is rich in content, and interested friends can learn about it. I hope you can get something after reading this article. Redis Cluster data fragmentation Mechanism Re
The step-by-step process of downloading the Oracle Linux ISO file and then installing it on VirtualBox. The full name of Oracle Linux,Oracle Enterprise Linux, called OEL, was released in early 2006.
This article mainly explains how to configure MySQL master-slave replication under Windows, the content is clear, interested friends can learn, I believe it will be helpful after reading. MySQL master-slave replication allows data from one database (master database) to be copied to a
The last winter vacation, immediately officially entered the industry, there are a lot of things to learn. First of all, I intend to make up the knowledge of the database. This note is written in Windows environment. 1. Basic concepts 1. Data Data2, database Database3, database server Da.
Recently, a lot of MySQL loopholes have been scanned. There is no good way to upgrade to the latest version first. When combing through the information of MySQL database, it is found that there is a set of MySQL version 5.1.71 for zabbix, and the latest version is 5.7.17.
This project will limit how often the same nickname can send exactly the same information. The interval between two identical messages is not less than 120 seconds. 1. Understanding the principle of limiting screen brushing Redis naturally has the ability to achieve this function. In Redis, Key can be set
Requirements: create a new Standby RAC library in the same environment, that is, on the same disk group as Primary RAC. Note: generally, it is not recommended to configure DG in production environment, because the storage layer is the same disk group, so disaster recovery is of little practical significance. I am here for the separation of reading and writing. Base
one。 The principle of Zabbix monitoring mongodb is to view the status of mongodb through echo "db.serverStatus ()" | mongo admin. Server configuration 1) add the global variable # of mongo
Xiaorenwutest.blog.51cto.comMySQL disaster recovery and backup (part two) Preface: in the last lecture, we learned that the database replies to the data in the database through the combination of mysqldump tools and binlog logs. But there is.
[client] port = 3306 # specify mysql startup port as 3306socket = / application/mysql-5.5.32/tmp/
Environment description hostname role IP address zabbix.contoso.comzabbix server192.168.49.129zabbix-db.contoso.commysql server192.168.4
What the editor wants to share with you this time is how to open a slow query on MySQL. The article is rich in content. Interested friends can learn about it. I hope you can get something after reading this article. 1. Introduction: open the slow query log, which allows MySQL to record words that have been queried for more than a specified time
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
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
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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