PostgreSQL postgis

Example for Ubuntu and osmdb

apt install postgis
sudo -u postgres createuser osmuser
sudo -u postgres createdb --encoding=UTF8 --owner=osmuser osm
sudo -u postgres psql osm --command='CREATE EXTENSION postgis;'
psql -d osm
SELECT PostGIS_Version(); //verify install
quit;
apt install osm2pgsql //https://osm2pgsql.org/doc/install/linux.html

wget https://download.geofabrik.de/europe/germany/berlin-latest.osm.pbf
osm2pgsql -d osm -s berlin-latest.osm.pbf //osm2pgsql took 302s (5m 2s) overall.

create another, and use directory /opt/data

psql -d osm
CREATE DATABASE osm2;
\c osm2
CREATE EXTENSION postgis;
CREATE ROLE osm;
ALTER DATABASE osm2 OWNER TO osm;
\q
cd /opt/data
wget https://download.geofabrik.de/europe/germany/brandenburg-latest.osm.pbf
osm2pgsql -d osm2 -s brandenburg-latest.osm.pbf

\l+
                                                                                         List of databases
    Name     |  Owner   | Encoding | Locale Provider |   Collate   |    Ctype    | ICU Locale | ICU Rules |   Access privileges   |  Size   | Tablespace |                Description
-------------+----------+----------+-----------------+-------------+-------------+------------+-----------+-----------------------+---------+------------+--------------------------------------------
 osm2         | osmuser  | UTF8     | libc            | en_US.UTF-8 | en_US.UTF-8 |            |           |                       | 4771 MB | pg_default |

.........

CREATE DATABASE osmdeber;
\c osmdeber
osmdeber=# ALTER DATABASE osmdeber OWNER TO osm;