postgresql optimization

Tags: Latest sel lost native default BSP Pass installation effectFirst, IntroductionPostgreSQL introduces a master-slave stream replication mechanism after 9.0, so-called stream replication is the synchronization of the corresponding data from the server through the TCP stream from the primary server. This will still be backed up from the server when the primary server data is lost.Stream replication allows updates to be kept from the server, as compared to file-log shipping. Connect the master

Label:Download the source code and unzip[[emailprotected] ~]# wget https://ftp.postgresql.org/pub/source/v9.4.0/postgresql-9.4.0.tar.bz2[[emailprotected] ~]# tar -xjvf postgresql-9.4.0.tar.bz2 [[emailprotected] ~]# cd postgresql-9.4.0 Start compiling the installation[[emailprotected] postgresql-9.4.0]# ./configure ……ch

Reference: http://www.postgresql.org/docs/current/static/pgupgrade.html Overview There are several options to upgrade from a lower version to a new version. One is the use of Pg_dump/pg_restore, the method is more time-consuming, that is, the downtime is relatively long, especially the large data volume, but stable and easy to operate. The second is the use of replication, like MySQL, with short downtime, but relatively complex operations. The third is the use of Pg_upgrade, rebuil

ObjectiveTitle, this blog record in the Linux CentOS 7 installation postgressql The entire process, as well as the database configuration, in the Linux system, PostgreSQL installation methods are divided into two kinds, namely: Binary installation package Installation Source Code Compilation Installation Because we don't have any special needs. Here's a simple way to choose--binary installation package installation, binary package in

Tags: SQL postgre compilation installation1. Establish Postgres users[Email protected] source]# AddUser postgres2. Download PostgreSQL source code[Email protected] source]# pwd/home/postgres/source[Email protected] source]# wget https://ftp.postgresql.org/pub/source/v9.6.1/postgresql-9.6.1.tar.gz3. Compile and install PostgreSQL:[Email protected] source]# pwd/hom

PostgreSQL Source InstallationDownload PostgreSQL installation packagewget https://ftp.postgresql.org/pub/source/v9.5.7/postgresql-9.5.7.tar.gzDownload websitehttps://www.postgresql.org/ftp/source/Install dependent packagesYum-y Install Readline-devel Zlib-develUnpacking-configuration-compile-installTAR-XF postgresql-9

Label:If we don ' t already has PostgreSQL installed, we must install it.$ sudo apt-get install PostgreSQLThis command installs the PostgreSQL server and various other packages.$ sudo update-rc.d-f postgresql removeremoving any system startup links for/etc/init.d/postgresql .../etc/rc0.d/k21postgresql/etc/rc1.d/k21post

be alleviated, but cannot be completely cured (unable to withstand high concurrent write, a bit like the feeling of Sanjing, LV bu strong also do not too high concurrent write operation generated OS dirty page). So how did 9.6 improve? 9.6 Smoothing Fsync,write Optimization 1. New Sync_file_range asynchronous write scheduling strategy Where feasible, trigger kernel writeback after a configurable number of writes, to prevent accumulation of dirty

Help Information -- Version Show version information -M You can specify the shutdown mode for stop and restart operations. System shutdown mode Smart Do not receive new connections until all existing connections are disconnected. Fast If you do not receive new connection requests, close the established connection and exit the system. immediate exit now, however, recovery operations must be

Database version:PostgreSQL 9.6.3System version:CentOS Release 6.6 (Final)Download software (Download software):[email protected] tools]# wget https://ftp.postgresql.org/pub/source/v9.6.3/postgresql-9.6.3.tar.gzTo see if it is already installed (check is not instatll):[Email protected] tools]# Ps-ef |grep pgsqlRoot 28590 18695 0 20:24 pts/0 00:00:00 grep pgsql[Email protected] ~]$ Rpm-qa |grep postgresPostgresql-libs-8.4.18-1.el6_4.x86_64Decompression

We know that the information in the PostgreSQL database is ultimately written to the persistent device. So how does PostgreSQL store the information organization on disk? Bruce Momjian has a slide "insider PostgreSQL Shared Memory", inside the picture is very intuitive description, shared buffer,page, the relationship between disk files, please see. The next few

Postgresql+slony-i installation Configuration Master-SlaveSlon Software:slony1-1.2.6http://slony.info/downloads/1.2/source/PostgreSQLhttp://www.postgresql.org/download/http://www.postgresql.org/ftp/source/v8.1.23/First, PostgreSQL installationMethod 1.rpm Package Installation Postfresql:Required Packages:postgresql92-9.2.10-1pgdg.rhel5.i386.rpmpostgresql92-server-9.2.10-1pgdg.rhel5.i386.rpmpostgresql92-cont

Setting up PostgreSQL master server under Ubuntu (Method 1)Install slightlyPostgreSQL master server:$ vi/etc/postgresql/9.1/main/postgresql.confPress A or I to enter edit modelisten_addresses = ' * ' (default is commented, this does not change when synchronizing from PostgreSQL will report a connection rejection)Wal_level = Hot_standby (default is commented)Max_w

The previous articles briefly introduced the manual installation and startup of PG. For example: blog. csdn. netiiheroarticledetails8254115 (installation FAQ) Step by Step PostgreSQL: Implement PostgreSQL self-starting step by step PostgreSQL: Learn pqxxC ++ API access the dynamic link library written in C is the number of Po