Uninstalling PostgreSQL

Select an uninstallation mode based on the installation mode. To prevent data loss, back up the database data before uninstalling the database.

For details about how to back up the database data, see Backing Up the Database.
If PostgreSQL is installed using the RPM package of the mirror site, select Uninstalling the Database (Against RPM Package Installation).
If PostgreSQL is installed by compiling the source code, select Uninstalling the Database (Against Source Code Compilation).

Stop the database process as the postgres user.

su - postgres
/home/postgresql-11.3-1/bin/pg_ctl -D /data/pgsql -l logfile stop

Uninstall the database RPM package as user root.
1
rpm -e postgresql-11.3-1.el7.aarch64

If PostgreSQL is installed by compilation, only corresponding files are generated. Therefore, uninstallation is not involved.

Stop the database process as the postgres user.

/usr/local/pgsql/bin/pg_ctl -D /data/pgsql -l logfile stop

Delete the software installation directory of the database as user root.
1
rm -rf /usr/local/pgsql/

Parent topic: Installation Guide