How to install PostgreSQL 9.4 on CentOS 7
In this, we will show you How to install PostgreSQL 9.4 on CentOS 7, RedHat. You will see how to Install PostgreSQL on CentOS is very easy and quick to install and use.
Before installing here is short description about PostgreSQL
PostgreSQL is a powerful, open source object-relational database system. It has more than 15 years of active development and a proven architecture that has earned it a strong reputation for reliability, data integrity, and correctness. It runs on all major operating systems, including Linux, UNIX (AIX, BSD, HP-UX, SGI IRIX, Mac OS X, Solaris, Tru64), and Windows. It is fully ACID compliant, has full support for foreign keys, joins, views, triggers, and stored procedures (in multiple languages). It includes most SQL:2008 data types, including INTEGER, NUMERIC, BOOLEAN, CHAR, VARCHAR, DATE, INTERVAL, and TIMESTAMP. It also supports storage of binary large objects, including pictures, sounds, or video. It has native programming interfaces for C/C++, Java, .Net, Perl, Python, Ruby, Tcl, ODBC, among others, and exceptional documentation.
An enterprise class database, PostgreSQL boasts sophisticated features such as Multi-Version Concurrency Control (MVCC), point in time recovery, tablespaces, asynchronous replication, nested transactions (savepoints), online/hot backups, a sophisticated query planner/optimizer, and write ahead logging for fault tolerance.It supports international character sets, multibyte character encodings, Unicode, and it is locale-aware for sorting, case-sensitivity, and formatting. It is highly scalable both in the sheer quantity of data it can manage and in the number of concurrent users it can accommodate. There are active PostgreSQL systems in production environments that manage in excess of 4 terabytes of data. Some general PostgreSQL limits are included in the table below.
Read Also: How to install postgresql 9.6 on CentOS 7
Firstly we need to add pgdg repository in CentOS 7
$ yum install https://download.postgresql.org/pub/repos/yum/9.4/redhat/rhel-6.9-x86_64/pgdg-centos94-9.4-3.noarch.rpm
$ yum -y groupinstall "PostgreSQL Database Server 9.4 PGDG"
Create a new PostgreSQL database cluster
$ /usr/pgsql-9.4/bin/postgresql94-setup initdb
Initializing database ... OK
Restart the services of postgresql
Now execute the following command to start and enable the postgresql services.
$ systemctl start postgresql-9.4
$ systemctl enable postgresql-9.4
You might also like: How to install postgresql 9.6 on Mac
PostgreSQL installation is done. If you want to use postgreSQL log in postgres account by typing following command
su - postgres
You can get postgres console by typing
Now use the postgresql as you want to use. To get the help use \h command.
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If you have any problem using this tutorial feel free to comment.