Compile and install MySQL 5.6.23 in Ubuntu 14.10

Compile and install MySQL 5.6.23 in Ubuntu 14.10 1. installation environment:Ubuntu Server 14.10MySQL-5.6.23.tar.gz 2. install necessary toolsSudo apt-get install make bison g ++ build-essential libncurses5-dev cmake 3. Add a combined user to set

How Does Oracle Randomly Read values from a specific combination?

How Does Oracle Randomly Read values from a specific combination? Here, we will use the DBMS_RANDOM package and the case when statement as follows: 1. Use the DBMS_RANDOM.RANDOM function to randomly generate a value and then modulo the value. If we

Use DBMS_SCHEDULER package to manage scheduled tasks

Use DBMS_SCHEDULER package to manage scheduled tasks Read navigation Create a scheduled task: Detailed description of supported task types: Example Manual execution plan Delete plan Dbms_scheduler is a package provided by Oracle to create

Manual Oracle database creation

Manual Oracle database creation Read navigationDatabase Version:1. Set environment variables and create directories2. Create an initialization parameter file3. Start the instance to nomount to create a database4. run scripts to create dictionaries,

Oracle RMAN-06023 and ORA-19693 errors

Oracle RMAN-06023 and ORA-19693 errors When restoring a 0-level backup database to another machine, first encountered a RMAN-06023 and then encountered a ORA-19693 error, the error occurred in the environment and content is roughly as

Oracle cannot change the tablespace to the backup mode in non-archive mode.

Oracle cannot change the tablespace to the backup mode in non-archive mode. After the Oracle tablespace is set to the backup mode, you can copy and back up the data files in the table space online at the file system level, because modifications to

With rollup in MySQL

With rollup in MySQL MySQL's extended SQL has a very interesting application WITH ROLLUP. The same statistics (SUM, AVG, COUNT…) are performed based on the grouping statistics ...), Similar to the statistical functions in Oracle, Oracle's

Install PostgreSQL 9.4 in Linux

Install PostgreSQL 9.4 in Linux Notes on how to install PostgreSQL 9.4 in Linux. I. Preface PostgreSQL, also known as Postgres, is a relational database management system applicable to various Linux operating systems, Windows, Solaris, BSD, and Mac

A brief comparison of SQL parsing details in MySQL and Oracle

A brief comparison of SQL parsing details in MySQL and Oracle The SQL syntax parser is a powerful built-in tool set that involves a lot of compilation principles, including syntax analysis and lexical analysis .. There are a lot of things that seem

MySQL query optimization: profile function

MySQL query optimization: profile function MySQL query optimization: profile function. Note that you need to install the profile module. 1. The version is later than 5.0.37. (Show profiles and show profile were added in MySQL 5.0.37 .) SELECT @

Mysql storage engine type, MyISAM & amp; InnoDB, and mysqlmyisam

Mysql storage engine types, such as MyISAM and InnoDB, and mysqlmyisam For some texts, refer to other blogs or texts.Official explanation: · MyISAM: the default MySQL plug-in storage engine, which is one of the most commonly used storage engines in

MySQL Server SWAP usage is high, which causes db to be very slow and slow. mysqlswap

MySQL Server SWAP usage is high, which causes db to be very slow and slow. mysqlswapHigh usage of MySQL Server SWAP causes slow dbEnvironment Introduction:CentOS: 6.XMySQL version: 5.5.40Fault Cause Analysis:The physical memory is 16 GB, And the

SQL Server database optimization practice (III), SQL Server

SQL Server database optimization practice (III), SQL Server Preface: This chapter describes how to compress logs and tables. Shrink log files -- Exploitation Exec sp_spaceused Statement to view the database size -- Right-click Database Properties

SqlServer changtracking and sqlservertracking

SqlServer changtracking and sqlservertracking For DML operations that track database tables, SQLserver 2008 and later provide Change Data Capture and change tracking. Differences Between Change Database capture and tracking changes: Change Data

Install MongoDB in 64-bit Windows 7 in the form of a zip package (ultra-detailed), win7mongodb

Install MongoDB in 64-bit Windows 7 in the form of a zip package (ultra-detailed), win7mongodb First, download the zip package of the corresponding version from the official mongodb website. If you use Windows 64-bit 2008 R2 + or win7, install the

Mysql cascade operations (instances) and mysql-level operation instances

Mysql cascade operations (instances) and mysql-level operation instances MySQL only supports the InnoDB Storage engine for Foreign keys. When creating foreign keys, the parent table must have corresponding indexes, when a sub-Table creates a

SQL reads XML fields and sqlxml Fields

SQL reads XML fields and sqlxml Fields Recently, we have to migrate data to an old system. This is a tough task. We need to compare the fields of the new and old data tables to migrate the data of the old system to the new system. Although the data

MYSQL master-slave replication builds the entire process-explore key parameters that cannot be synchronized in real time, mysql master-slave

MYSQL master-slave replication builds the entire process-explore key parameters that cannot be synchronized in real time, mysql master-slave Reprinted please indicate the source: http://blog.csdn.net/guoyjoe/article/details/45873859 1. master

Mysql deadlock occurs when the disk is full.

Mysql deadlock occurs when the disk is full. Today, I encountered a problem because the disk of the machine where mysql is located is full, leading to a mysql deadlock and not even querying the select statement. If I did not read the mysql Log, I

ERROR 1160 (08S01): Got an error writing communication packets, 116008s01

ERROR 1160 (08S01): Got an error writing communication packets, 116008s01 The application encounters an error message: MySQLNonTransientConnectionException: Got an error writing communication packets. It is related to packet and has never

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