Database Administrator

Build MongoDB Service Based on CentOS 6.5 Operating System MongoDB is a non-relational database (NoSQL) that is very popular in the IT industry. Its flexible data storage method is favored by current IT practitioners. MongoDB implements the

Install Oracle 11g in RedHat Linux 6.0 Steps for installing Oracle in Linux Preparations before installation Transmit oracle to the root directory through ssh (this installation is under VMware) Installation Package for Linux for Oracle 11g RedHat 6.

Build a GoldenGate bidirectional replication environment from Oracle to Oracle Objective: To build a Goldengate two-way replication environment (DDL + DML supported) from Oracle to Oracle ). Environment: OS: Red Hat Enterprise Linux Server release 5

How does GitHub improve website performance by migrating MySQL databases? GitHub, as a widely used open-source code library and version control system, has a significant impact on the performance of its database MySQL. Next we will follow the pace

Data backup and Database Replication in Oracle user management mode The first thing to note is that Oracle Database Backup can be divided into logical backup and physical backup. Logical backup backs up data through data export, mainly through the

Can rename table but can not truncate table, renametruncateA table cannot be truncate but can be rename. This sounds strange at first. The process is simulated below.Three sessions:Session1 performs the truncate and rename operations;Session2

Mysql multi-log table result set splicing stored procedure, mysql Stored Procedure Generally, a single-day log only records the log information of the current day. If you need to view the log information within January, You Need To splice the result

Paging process for pl/SQL writing, paging for plsql writing-- Develop a package-- Create a package. In this package, the test_cursor type is defined as a cursor. As follows:SQL code Create or replace package testpackage TYPE test_cursor is ref

POJO class and ing configuration file, pojo ing configuration file Requirements on persistent objects 1. Provides a no-argument Constructor so that Hibernate can use Constructor. newInstace () to instantiate a persistent object. 2. Provide an

Soft test path-linear table of Data Structure, soft Test Data Structure The data is the value, that is, the result we get through observation, experiment, or calculation. There are many types of data, the simplest of which is numbers. Data can also

Goldengate Checkpoint Table Is already upted, biosiscorrupted Replicat maintains checkpoints that provide a known position in the trail from whichStart after an expected or unexpected shutdown. By default, a record of these checkpointsIs maintained

[SQL statement] Easy-to-use SQL statements-suitable for unfamiliar databases and familiar with databases Learn the data flow of the company system over the past few days. It mainly involves the data of several tables. However, there are millions of

Reliable Windows Redis and Windows RedisSubtitle: comments are more exciting. How can you solve the problem of 64-bit Windows version of Redis occupying the C disk. MS Open Tech technical team recently spent a lot of time testing the latest build of

Java Dynamic proxy and CGLib proxy for IT Ninja Turtles, and cglib for ninja turtles public class UserDAOImpl { public void save (){ // TODO Auto-generated method stub System. out. println ("user saved "); } } // related configuration,

Mysql -- SQL Optimization-count the number of Certain types and the number of mysqlsql Optimizations Sometimes we want to count the number of such SQL statements. In addition to full table scanning, filesort takes 1.34 seconds. mysql> select

Mongodb entry-installation and configuration, mongodb entry-level Configuration Author: zhanhailiang Date: 1. Install mongodb: [root@~/wade/nodejs/nodeclub]# yum search mongodb[root@~/wade/nodejs/nodeclub]# yum install mongodb.x86_64

PHPCMS V9 administrator password forgot how to modify, phpcmsv9Generally, Vm providers provide PHPmyAdmin. Select your website database and select the table v9_admin,EditPassword, changed to: fa3250300be9b7ab0848257f3cbb06e7Encrypt to ucFfApIn this

Oracle query optimization and oracle Optimization 1. Reasonably sort query Conditions Oracle uses the bottom-up sequence to parse WHERE data. From the perspective of performance optimization, we recommend that you write the conditions that can

Simple SQL statements for database learning and Database SQL statements 1. Database Structure 1.1 Database Different databases are called Catalog (Database in some DBMS ). After using multiple Catalog, you can bring usTo the following benefits:It

Accidental deletion of stored procedures, accidental deletion of file restoration Software After the stored procedure is deleted by mistake, use the following statement to locate the deleted stored procedure and restore it. You need to log on with