In this tutorial, you have learned how to copy a PostgreSQL database within a database server, or from a database server to another. In case the connection between servers are fast and the size of the database is not big, you can use the following command: pg_dump -C -h local -U localuser sourcedb | psql -h remote -U remoteuser targetdbįor example, to copy the dvdrental database from the localhost server to the remote server, you do it as follows: pg_dump -C -h localhost -U postgres dvdrental | psql -h remote -U postgres dvdrental sql Code language: PostgreSQL SQL dialect and PL/pgSQL ( pgsql ) Third, create the dvdrental database on the remote server: CREATE DATABASE dvdrental Code language: PostgreSQL SQL dialect and PL/pgSQL ( pgsql )įourth, restore the dvdrental.sql dump file in the remote server: psql -U postgres -d dvdrental -f dvdrental. The following steps illustrate how to copy the dvdrental database from the local server to the remote server.įirst, dump the dvdrental database into a dump file e.g., dvdrental.sql: pg_dump -U postgres -O dvdrental -f dvdrental. sql Code language: PostgreSQL SQL dialect and PL/pgSQL ( pgsql ) Copying the dvdrental database example Third, create a new database in the remote server: CREATE DATABASE targetdb Code language: PostgreSQL SQL dialect and PL/pgSQL ( pgsql )įinally, restore the dump file on the remote server: psql -U postgres -d targetdb -f sourcedb. Second, copy the dump file to the remote server. pg_dump -U postgres -d sourcedb -f sourcedb. If the size of the source database is big and the connection between the database servers is slow, you can dump the source database to a file, copy the file to the remote server, and restore it:įirst, dump the source database to a file. There are several ways to copy a database between PostgreSQL database servers. PostgreSQL copy database from a server to another To terminate the active connections to the dvdrental database, you use the following query: SELECT pg_terminate_backend (pid)Īfter that you can execute the CREATE TABLE WITH TEMPLATE statement again to copy the dvdrental database to dvdrental_test database. WHERE datname = 'dvdrental' Code language: JavaScript ( javascript ) The following query returns the active connections: SELECT pid, usename, client_addr If the dvdrental database has active connections, you will get the following error: ERROR: source database "dvdrental" is being accessed by other usersĭETAIL: There is 1 other session using the database. WITH TEMPLATE dvdrental Code language: PostgreSQL SQL dialect and PL/pgSQL ( pgsql )ĭepending on the size of the source database, it may take a while to complete copying. For example, to copy the dvdrental sample database to the dvdrental_test database, you use the following statement: CREATE DATABASE dvdrental_test This statement copies the sourcedb to the targetdb. WITH TEMPLATE sourcedb Code language: PostgreSQL SQL dialect and PL/pgSQL ( pgsql ) PostgreSQL makes it easy to do it via the CREATE DATABASE statement as follows: CREATE DATABASE targetdb This Gem will enable your AR models to use the PostgreSQL COPY command to import/export data in CSV format. ![]() Sometimes, you want to copy a PostgreSQL database within a database server for testing purposes. About \copy: You have to use the -c option to supply a command to psql: psql -c '\copy sample FROM '/home/MyUser/data/TableName.csv' WITH (FORMAT CSV)' Share. PostgreSQL copy database within the same server So if, for example, the OS user postgres does not have permissions on the /home/MyUser directory, you get the observed error message. Where the text is: COPY action_abilitations (id, group_action_id, partecipation_role_id, group_id, created_at, updated_at) FROM stdin ħ 4 13 37 16:41:43.797787 16:41:43.Summary: in this tutorial, you will learn how to copy a PostgreSQL database on the same server or from a server to another. ![]() ![]() The error is: ERROR: syntax error at or near "7" May I be missing some basic configuration that's preventing me from running this command, or I just did not understand they way it works? I'm using pgAdminIII and I used StackBuilder to install PostgreSQL 9.2.4.1 as a DB Driver. I've tried running the scripts both as queries and as pgScripts, but in both ways I'm getting an error at the first row after the COPY FROM. More precisely, the error is thrown at the first element that should be inserted in the given table. I understand the commands, since I previously used both Oracle and MS-SQL, but all the scripts I'm running return errors when they reach the "COPY FROM" instruction. I just started using Postgres and I'm trying to create a sample db to understand its functions, looking around, I found some scripts in.
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