Use mysqldump to export a database (table)

Use mysqldump to export a database (table) Mysqldump is used to back up databases or migrate data between different databases. The backup content of mydqldump includes SQL statements used to create and load tables.I. How to Use mysqldump (1) Back up

Reading the return values of Oracle functions using Python

Reading the return values of Oracle functions using Python Create a function in Oracle to return an index table. When we thought that the text could also transmit information, we suddenly came to the inspiration and set the return value to the text

Usage and summary of Oracle Materialized View

Usage and summary of Oracle Materialized View What is a materialized view? Materialized View is a database object that contains query results. It is a local copy of remote data or used to generate a summary table based on the sum of data

Install MySQL in Ubuntu and perform simple operations

Install MySQL in Ubuntu and perform simple operations Installing MySQL on Ubuntu is very simple and requires only a few commands. 1. sudo apt-get install mysql-server 2. apt-get isntall mysql-client 3. sudo apt-get install libmysqlclient-dev During

MySQL accidentally deletes the InnoDB data file for restoration

MySQL accidentally deletes the InnoDB data file for restoration Error reproduction:Use rm-f ib * to delete data files and redo log files. At this time, the mysql process still exists and mysql can still be used normally. File recovery:1: Find the

Run Oracle with Docker on Mac

Run Oracle with Docker on Mac 1. You must use Boot2Docker to run Docker and install Boot2Docker on Mac. 1. Download the pkg installer https://github.com/boot2docker/osx-installer/releases/latest, and install it in double-click mode;2. initialize and

Install Redis and MongoDB in CentOS 7

Install Redis and MongoDB in CentOS 7 The previous article recorded Node. js. This time we talked about installing Redis and MongoDB in CentOS 7, so we basically installed the entire development environment of Node. js.Redis Installing apsaradb for

Two solutions to ORA-30078 errors

Two solutions to ORA-30078 errors Recently encountered a ORA-30078 error while trying to create a partition table, prompting "ORA-30078: partition limit must be TIME/timestamp with time zone text", why is it difficult. First, I create a test table

MySQL 5.6.26 uses frm & amp; ibd to restore Data

MySQL 5.6.26 restores data through frm & ibd Create A database bkjia on serverRoot (yoon)> show create table bkjia \ G* *************************** 1. row ***************************Table: bkjiaCreate Table: create table 'bkjia '('Id' int (11)

Install MySQL on Ubuntu Server 16.04 and set Remote Access

Install MySQL on Ubuntu Server 16.04 and set Remote Access I. Install MySQL on Ubuntu Server 16.04 1. Use the root account Sudo apt-get install mysql-serverApt-get isntall mysql-clientApt-get install libmysqlclient-dev If there is a problem in the

Setting a large memory page on Linux solves the problem that the kswapd0 process consumes cpusys in transition.

Setting a large memory page on Linux solves the problem that the kswapd0 process consumes cpusys in transition. Environment: SLES11 SP4 + Oracle 11.2.0.4After a new test database was set up and ran for about two days, it was found that a process

MySQL 5.6.26 mistaken deletion of ibdata for restoration

MySQL 5.6.26 mistaken deletion of ibdata for restoration MySQL 5.6.26 mistaken deletion of ibdata for restoration [Root @ hank-yoon ~] # Ps-ef | grep mysqlRoot 1129 1 0 00:00:00 pts/0/bin/sh/export/servers/mysql/bin/mysqld_safe -- datadir

Summary of Datapump data migration practices

Summary of Datapump data migration practices Although a lot of data migration projects have been put into practice, some small differences may make a big difference in the entire data migration solution. Data is the core lifeblood of the system.

Preparations before Datapump data migration (2)

Preparations before Datapump data migration (2) I wrote an article to analyze some preparations for Datapump data migration, and the response was good. In a recent scenario, it is better to use Datapump based on evaluation. The main reasons are as

MySQL 5.6 -- dump-slave parameter usage

MySQL 5.6 -- dump-slave parameter usage In MySQL 5.5 and later versions, a parameter "dump-slave" is added. With this parameter, we can export data on the slave node to create a new slave to avoid pressure on the master database. The method is as

Oracle graphical and command line installation

Oracle graphical and command line installationOracle Installation version description Different Versions of Oracle must be installed on a specific system version.For example, 11.2.0.1.0 of Oracle 11gR2 needs to be installed in CentOS 5.X and RHLE

Install MySQL5.7.13 in CentOS 6.8 using a common binary method

Install MySQL5.7.13 in CentOS 6.8 using a common binary method Installation environment: CentOS 6.8Objective: To install MySQL5.7.13 using the Generic Binary (Generic Binary) MethodRequired Software: mysql-5.7.13-linux-glibc2.5-x86_64.tar (Please

High MySQL Availability Based on MHA and Galera Cluster

High MySQL Availability Based on MHA and Galera Cluster MHA: Master HA is an open-source MySQL high-availability program. It provides the automatic master failover function for the MySQL Master-slave replication architecture. When MHA detects a

MySQL trigger Update triggers Insert failure

MySQL trigger Update triggers Insert failure To display the historical records of tables with status updates only, you need to create a trigger in the original table to write the updated content to another table at the same time. So the test  --

Three methods of MySQL backup

Three methods of MySQL backup The main function of MySQL backup is to quickly, efficiently and securely solve problems in the case of hardware faults, software faults, natural disasters, hacker attacks, and human error, so as to avoid unnecessary

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