Postgres psql dump

The resulting dump can be restored with psql : psql -f infile postgres. A custom-format dump is not a script for psql , but instead must be restored with pg_restore, for example: pg_restore -d dbname filename. See the pg_ dump and pg_restore reference pages for details. Actually, you can specify any existing database name to start from, but if you are loading into an empty cluster then postgres should usually be used. It is always necessary to have database superuser access when restoring a pg_dumpall dump , as that is required to restore the role and tablespace information.

Restore a database with pg_restore. CREATE TABLE, ALTER TABLE, and COPY SQL statements of source database. To restore these dumps psql command is enough.

Beware: databasename must be created before importing. A dump like that will contain only DDL SQL commands, and will be able to recreate the schema but not the actual data. Access the command line on the computer where the database is stored. Automate Backups with a Cron Task. You may want to set up a cron job so that your database will be backed up automatically at regular intervals.

The steps in this section will set up a cron task that will run pg_ dump once every week. More than year has passed since last update. To backup all databases, you can run the individual pg_ dump command above sequentially, or parallel if you want to speed up the backup process. This blog shows you how to use them, with some tips and tricks for ensuring you have a proper backup strategy. Three different backup file formats can be created by pg_ dump Postgres : Plain-Text Format.

A plain-text script file containing SQL statements and commands that can be executed by the psql command line terminal program to recreate the database objects and load the table data. Use the psql program to restore from a plain-text backup file. The psqlutility allows you to restore SQL script file generated by the pg_ dump , pg_dumpall or any other tools that generates compatible backed up files. By using the psql tool, you have to execute the entire script.

When used properly pg_ dump will create a portable and highly customizable backup file that can be used to restore all or part of a single database. Changing that to -f to specify the file for the dump , resolved the problem (using the plain format). I was writing a Powershell script which may have been the underlying cause. The commands were accepte but there could have been a corruption issue there. Hopefully its clear to anyone reading this what backup and restore is in regards to your database.

Z użyciem pg_dump lub pg_dumpall – jest to zrzut aktualnego stanu danych do pliku SQL, nie zawiera informacji o strukturze fizycznej. Są to tylko struktury danych (tabele, indeksy etc), bez informacji o np. Allow the restore operation to create a new database with the same name as the database from which the backup was create and restore the database objects into this newly created database. Here are some scripts which will backup all databases in a cluster individually, optionally only backing up the schema for a set list. The reason one might wish to use this over pg_dumpall is that you may only wish to restore individual databases from a backup, whereas pg_dumpall dumps a plain SQL copy into a single file.

PostgreSQL is a one of the robust, open source database server. As already explaine if the psql client used to create the backup is from a postgres version smaller than the postgres server, it may fail. The latest dockers images, for any Odoo version, now uses the latest postgres psql client to create backups.

This article will describe various ways to use of pg_ dump command to backup database. Also you will learn how to restore datbase backup. Updated to reflect changes from 8. Let’s start by making sure we understand how to backup a whole Postgresql database using pg_dump. Dumping Using pg_dump and pg_dumpall.

The pg_dump utility can be used to generate a logical dump of a single database. If you need to include global objects (like uses and tablespaces) or dump multiple databases, use pg_dumpall instead. The output generated by pg_dump is not a traditional “backup”.

It omits some information that makes it.