Pg_dump man

It makes consistent backups even if the database is being used concurrently. Dumps can be output in script or archive file formats. Secon back up each individual database using the pg _ dump program as described in the above section.

It will issue the commands necessary to reconstruct the database to the state it was in at the time it was saved. The archive files also allow pg _restore to be selective about what is restore or even to reorder the items prior to being restored. Currently, servers back to version 7. PostgreSQL servers older than its own version. Ignore version mismatch between pg_dump and the database server.

Use this option if you need to override the version check (and if pg_dump then fails, don’t say you weren’t warned). Once restore it is wise to run ANALYZE on each database so the optimizer has useful statistics. You can also run vacuumdb-a-z to analyze all databases. To see a list of all the available options use pg _ dump -? With given options pg _ dump will first prompt for a password for the database user db_user and then connect as that user to the database named db_name. There are two tools to look at, depending on how you created the dump file.

Your first source of reference should be the man page pg _ dump (1) as that is what creates the dump itself. In the case of backups made with pg _ dump -Fc (custom format), which is not a plain SQL file but a compressed file, you need to use the pg _restore tool. This currently includes the information about database users and groups. Thus, pg _dumpall is an integrated solution for backing up your databases. As far as I can tell, you can only dump one schema at a time.

When doing a data only dump , pg _ dump emits queries to disable triggers on user tables before inserting the data and queries to re-enable them after the data has been inserted. If the restore is stopped in the middle, the system catalogs may be left in the wrong state. Hi gianfranco, How exactly large is your database and how heavy is a workload on it?

Usually if you have more than ~200Gb, better to use pg _basebackup because pg _ dump will take too long time. And please take in min that pg _ dump makes dump , which is actually not the same thing as a backup. Note for documentation: According to the psql man -Z 0. Specify the compression level to use in archive formats that support compression. Keep in mind if you have xdebug installed it will limit the var_ dump () output of array elements and object properties to levels deep.

To change the default, edit your xdebug. 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. The above command can be run directly from a Linux shell.

Below is a description of each portion of the above command that will search the batteries table for entries relating to the userid specified. What pgsql version are you using? Also, it maintains a backup catalog per database cluster.

Users can maintain old backups including archive logs with one command. I dump and restore roles for a cluster? Ask Question Asked years, months ago.

Il réalise des sauvegardes consistantes même si la base de données est en utilisation concurrente. Wenn Du also via pg_dump einzelne Datenbanken sicherst, solltest Du immer auch pg_dumpall mit der Option -g aufrufen, denn das sichert die globalen Objekte. Logische Backups haben den Vorteil, auch versionsübergreifend einsetzbar zu sein, Du kannst einen Dump von 9.