Output commands to fall many of the dumped databases objects prior to outputting the instructions for producing them. This option is useful once the restore is to overwrite an existing database.

tend not to output instructions to established TOAST compression techniques. With this selection, all columns is going to be restored with the default compression location.

pg_dump is often a utility for backing up a PostgreSQL databases. It makes regular backups even though the database is getting used concurrently. pg_dump does not block other end users accessing the database (readers or writers).

pg_dump -j utilizes multiple database connections; it connects to the database at the time While using the leader system and Again for each worker position. with no synchronized snapshot feature, the several worker Positions wouldn't be guaranteed to see precisely the same knowledge in Just about every link, which could lead to an inconsistent backup.

When dumping details to get a table partition, make the duplicate or INSERT statements target the basis of your partitioning hierarchy that contains it, rather than the partition alone. This triggers the right partition for being re-established for each row when the information is loaded.

To restore from this type of script, feed it to psql. Script information can be used to reconstruct the databases even on other devices together with other architectures; with a few modifications, even on other SQL databases products.

Specifies the title more info in the database for being dumped. If it's not specified, the surroundings variable PGDATABASE is employed. If that isn't set, the consumer identify specified to the relationship is made use of.

The most flexible output file formats tend to be the “custom” format (-Fc) as well as the “Listing” structure (-Fd). They allow for selection and reordering of all archived items, aid parallel restoration, and are compressed by default. The “Listing” structure is the sole structure that supports parallel dumps.

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With zstd compression, lengthy mode may well improve the compression ratio, at the expense of elevated memory use.

However, the tar structure isn't going to aid compression. Also, when employing tar structure the relative order of table knowledge things can't be altered in the course of restore.

This option is pertinent only when dumping the contents of a desk that has row security. By default, pg_dump will established row_security to off, making sure that all facts is dumped through the table.

Dumps is usually output in script or archive file formats. Script dumps are simple-textual content information containing the SQL commands required to reconstruct the databases towards the point out it was in at enough time it was saved.

this selection will make no big difference if there aren't any examine-publish transactions active when pg_dump is started off. If read through-write transactions are Energetic, the beginning on the dump could possibly be delayed for an indeterminate amount of time. at the time operating, functionality with or with no swap is identical.

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The alternative archive file formats should be utilised with pg_restore to rebuild the database. they permit pg_restore to get selective about exactly what is restored, or perhaps to reorder the objects ahead of becoming restored. The archive file formats are intended to be transportable across architectures.