PostgreSQL

Background For financial-level scenarios, 2 replicas are usually not enough, and users may need multiple replicas. For example, a master 4 from, requires in addition to the master, also requires 2 synchronized copies, others can be asynchronous

Scenario: Company business Database bit PostgreSQL database, need to use ETL tool (SSIS2012) to extract data into Data Warehouse 1. SSIS2012 Connect PostgreSQL database Two ways:. NET Provider for OLE DB and ODBC, the first colleague is to spend

PostgreSQL automatically backs up and deletes Windows scripts for backup files 10 days ago.The first step, create the script, name the Back.bat file@ECHO off@setlocal ENABLEEXTENSIONS@CD/d"%~dp0" Setpgpassword=PasswordSET Pgpath=

Database Connections is in the left directory tree in Arccatalog.After double-clicking, select Database Plantform:postgresql, instance for localhost (127.0.0.1), enter the user and password (default user postgres), database is best not to select the

Function return type Describe Example Results string | | String Text String connection ' Post ' | | ' Gresql ' PostgreSQL Bit_length (String) Int The number of bits in a

I. Soft requires (MASTER/SLAVE)Os:centos Linux release 7.3.1611 (Core) X641.disabled SELINUX# More/etc/selinux/config# This file controls the state of the SELinux on the system.# selinux= can take one of these three values:# Enforcing-selinux

The materialized view appears after PostgreSQL 9.3. Materialized views are made up of real data, which is fundamentally different from the general view.1. The materialized view creation syntax is as follows:--Create SyntaxCREATEMaterializedVIEWtable_

The original installation package was used, but the installation package creates the Postgre user. Look at the landing interface a bit uncomfortable, search for a half-day incredibly did not find how to compile the installation under OSX tutorial,

Here is an example that demonstrates how the PostgreSQL stored procedure returns a dataset.1 Prepare the Data sheet firstMember_categoryCREATE TABLE Member_category (ID serial, name text, Discount_rate real, base_integral integer);ALTER TABLE Member_

Here is an example that demonstrates how the PostgreSQL stored procedure returns a dataset.1 Prepare the Data sheet first//member_categorycreate table member_category (ID serial, name text, discount_rate Real, base_integral integer), ALTER TABLE

What is stored procedure, Baidu Encyclopedia is so defined: the stored procedure (Stored Procedure) is in a large database system , a set of SQL statements in order to complete a specific function, stored in the database after the first compilation

Primary database: 172.16.254.21 port: 5432From database: 172.16.254.22 port: 5432 Step 1: Master-Slave installation SlonApt-get Install Slon-binStep 2: Configure permissions for the master-slave database to create the

ReproducedA pretty old article, but still very useful, can refer to patching.PG configuration file is the database directory of the postgresql.conf file, 8.0 later version can support k,m,g such parameters, as long as the corresponding parameters

Postgres Primary and Standby switchingThe Master is looking forMethodPs-ef | grep wal (Main library sender)Postgres 27873 27864 0 May 06? 00:00:10 Postgres:wal Sender Process Postgres 10.2.0.13 (47582) streaming 0/906ff78Postgres 27874 27864 0 May 06

Recently work is very uncomfortable, also looking at Python, so did not insist on writing notes, today to update a little note, Metasploit support database has 2 kinds, one is PostgreSQL, there is a familiar with MySQL, in fact, I am not familiar

After performing your first instant recovery (pitr,point-in-time-recovery), we are ready to work on a real replication setup. In this chapter, you will learn how to set up asynchronous replication and flow. Our goal is to ensure that you can achieve

Basic Environment Description:9.3 PostgreSQL version: 9.3. 6 Master: 192.168. 56.101 Standby: 192.168. 56.102Installation process slightly, based on pkg package1. Configure the Master side# psql-u pgsql-d postgres-c"CREATE USER Rep REPLICATION LOGIN

first, experiment shows the relationship between roles and users in PostgreSQL, there are two confusing concepts: Role/Use User. These two concepts are confusing because for PostgreSQL, they are two identical objects. The only difference is: 1. I

Just getting started with PHP, and then start compiling the environment, starting with PostgreSQL... ----------------------------------------------------------- | System | centos 5.7. ----------------------------------------------------------- If

Rails comes with a zero-configuration sqlite by default. This feature is OK for development, but cannot be written concurrently. It is not suitable for production. Let's start from scratch.   P.S.: deploy postgresql Based on ubuntu server   =========