Pg_dumpall

PostgreSQL databases of a cluster into one script file. The script file contains SQL commands that can be used as input to psql to restore the databases. It does this by calling pg _dump for each database in a cluster. So far, we have backed up a single table, multiple tables, and a single database. So what are some notable differences between pg _dump and pg _ dumpall ? Backing up databases is one of the most critical tasks in database administration.

It creates a single (non-parallel) dump file. Fc for each database to get a nice compressed dump suitable for use with pg _restore. Yes, this kind of sucks. How to pass in password to pg_dump?

I need to keep track of each database name, which also not ideal. With this patch checked-in, pg_dumpall now uses a workaround (pg_roles) to read the same data (except passwords) and generate the same SQL 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. Hi, I upgraded our postgres database from V9.

Used pg_dumpall then restore it to the new instance. After the restore, we notice that table had duplicate rows, such that it was not able to create the primary key. SQL import statements, one for each database on the server. The contents in between those two strings make up each import. I have setup region-to-region connectivity and I am considering Cross-Region Replication Sbuckets but I cannot pg_dumpall on my RDS Postgres.

To store this information, and back up all of your databases simultaneously, you can use pg_dumpall. Restore all databases from the backup: psql -f pg_backup. It is important to understand the scenarios under which pg _dump and pg _restore utilities will be helpful. Let’s have a look at the common options for backup and restore. 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. I have a ~450G database, and the difference is quite meaningful to me, as it is measured in days.

He has another, more popular, diary. 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.

This one is more general. Below is some connections options which you can use for connecting remote server or authenticated server with all queries given in this article. Postgres Pro databases of a cluster into one script file. To save time, if you would like to backup all of the databases in your system, there is a utility called pg_dumpall. They syntax of the command is very similar to the regular pg_dump comman but it does not specify the database.

So I guess taking a pg_dumpall of a replication server that has not caught up yet is generally a bad idea? Note: pg_dumpall internally executes SELECT state- ments. If you have problems running pg_dumpall , make sure you are able to select information from the database using, for example, psql. It also dumps the pg_shadow table, which is global to all databases. I cover pg_dump and pg_dumpall.

I show you how to restore using psql or even pg_restore. I also how to detect errors and give practical tips on setting up your basic backup scheme. Tom Lane Are you trying to accurately reproduce the formatting of what you see? As long as the dumper will run on the same machine as the database server, consider using IDENT authorization instead.

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. I find it tedious to have to backup databases every week.

And I also think weekly backups should be turned into daily backups.