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1. Download the Windows version of mongodb, including the 32-bit and 64-bit versions (of which the linux version is also available). Download the version based on the system conditions. : Www. mongodb 1. Download the Windows version of mongodb,

The master-slave configuration is one of the characteristics of MongoDB, which provides performance such as fault tolerance and fault recovery. The master node declares the master node, and the slave node declares the slave and -- source. The master-

1. Configure Advanced Security Options and network services for the Oracle database through OUI 2. Configure kerberos Authentication ① execute the command netmgr, click the authentication label, and go to AvailableMethods 1. Configure Advanced

How Does Oracle query the complete definition statement Syntax of an object: DBMS_METADATA.GET_DDL (object_typeINVARCHAR2, nameINVA How Does Oracle query the complete definition statement Syntax of an object: DBMS_METADATA.GET_DDL (object_type IN

The first time I installed MySQL on Linux (Ubuntu10.10), I had to pay some twists and turns, and finally I had to figure out my ideas. First, let's talk about the steps for my final successful installation, that is, in Ubuntu10 The first time I

The Oracle Database Hot Standby solution monitors the database in real time, backs up the changed data in the database to the standby database in seconds, and backs up only the successful transactions of the primary database. The Oracle Database Hot

1. Loading and aging of large objects in the reserved area without PIN will cause fragments in the sharing pool. Oracle wants to solve this problem by creating a region in the sharing pool, 1. Loading and aging of large objects in the reserved area

UNDO tablespace Management 1. For DML statements, as long as the data block is modified, the Oracle database retains the data block before the modification and stores it in undosegment, UNDO tablespace Management 1. For DML statements, as long as

After the PostgreSQL database server is installed, there are three databases by default. You can view them in the following two ways. After the PostgreSQL database server is installed, there are three databases by default. You can view them in the

When modifying the table structure, MySQL may interrupt the normal operation of the product and affect the user experience, or even worse, resulting in data loss. Not all database administrators, programmers, When modifying the table structure,

In general, Oracle's Bad blocks can be divided into two scenarios: physical damage and logical damage. Physical damage is caused by storage and other reasons, causing Oracle to process data blocks In general, Oracle's Bad blocks can be divided into

As an Oracle backup and recovery tool, RMAN provides us with powerful functions, including physical and logical detection of data files and validity detection of backup files. As an Oracle backup and recovery tool, RMAN provides us with powerful

SunOS5.10Oracle10.2.0.2.0 A ORA-600 error is reported for a database in the development environment. SunOS 5.10 Oracle 10.2.0.2.0 development environment a database has a ORA-600 error. Sunoperating 5.10Oracle 10.2.0.2.0A ORA-600 error occurs

ORA-12518: TNS: listenercouldnothandoffclientconnection this error is generally in the test database concurrency, multiple users, the background with servle ORA-12518: TNS: listener cocould not hand off client connection this error is generally in

Code for creating a shell script instance in Oracle :#! Binbash # ocpyang@126.com # createuserif [$ #-ne4]; thenecho-ee [1; 32 m *** Code for creating a shell script instance in Oracle :#! /Bin/bash # ocpyang@126.com # create user if [$ #-ne 4];

I have always wanted to learn about the O & M of Oracle databases in Linux, but the process of installing the Linux operating system from the beginning and then installing the Oracle database is really cumbersome and involves a lot of operations. I

MongoDB data is particularly flexible. Compared with SQL databases, it does not need to define the table structure before inserting data. MongoDB collections do not emphasize fixed document structures. This flexibility MongoDB data is particularly

This mode ensures that data is not lost when primaryDatabase fails. In this mode, make sure that the Redo data has been written to PrimaryData before the transaction is committed. This mode ensures that data is not lost when the primary Database

The MySQL structure represents a database connection handle, which contains information about the connection status of the server. Almost all functions use it. To connect to MySQL, you must create a MySQL instance The MySQL structure represents a

SQLServerProfiler-performance tuning has enough reason to become a hot topic. Today's fierce competition in the business field, if users think that an application is too slow, they will immediately turn to another vendor. To be