Specifies the TCP port or area Unix area socket file extension on which the server is listening for connections. Defaults towards the PGPORT natural environment variable, if established, or maybe a compiled-in default.
In the event the involved hosts have modified, the connection information might have being modified. It may also be ideal to truncate the goal tables just before initiating a different whole desk duplicate. If buyers intend to duplicate initial knowledge during refresh they need to build the slot with two_phase = Wrong. once the Preliminary sync, the two_phase option might be immediately enabled by the subscriber Should the subscription were originally produced with two_phase = legitimate possibility.
produce DATABASE foo WITH TEMPLATE template0; every time a info-only dump is decided on and the option --disable-triggers is applied, pg_dump emits instructions to disable triggers on person tables right before inserting the info, and afterwards instructions to re-enable them after the info has actually been inserted. If your restore is stopped in the center, the technique catalogs may very well be left in the wrong point out.
When employed with one of the archive file formats and combined with pg_restore, pg_dump supplies a versatile archival and transfer system. pg_dump can be used to backup a whole databases, then pg_restore can be employed to examine the archive and/or decide on which areas of the database are to become restored.
When dumping reasonable replication subscriptions, pg_dump will crank out develop SUBSCRIPTION commands that use the link = Bogus possibility, to make sure that restoring the membership will not make remote connections for creating a replication slot or for Preliminary table duplicate. like that, the dump can be restored without necessitating network entry to the remote servers. It is then up towards the user to reactivate the subscriptions in an acceptable way.
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If no compression level is specified, the default compression amount might be employed. If only a amount is specified without having mentioning an algorithm, gzip compression is going to be employed if the extent is greater than 0, and no compression will be utilised if the extent is 0.
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A directory structure archive is usually manipulated with conventional Unix applications; for instance, information in an uncompressed archive may be compressed Along with the gzip, lz4, or zstd equipment. This structure is compressed by default employing gzip in addition to supports parallel dumps.
produce the dump in the specified character set encoding. By default, the dump is developed while in the databases encoding. (Another way to find the very same result's to set the PGCLIENTENCODING setting variable to the desired dump encoding.) The supported encodings are described in segment 24.three.one.
Requesting distinctive locks on databases objects whilst working a parallel dump could lead to the dump to fail. The reason is that the pg_dump leader approach requests shared locks (obtain SHARE) around the objects which the employee procedures will dump later as a way to make sure that no one deletes them and makes them disappear when the dump is operating. If Yet another shopper then requests an special lock with a desk, that lock will not be granted but will likely be queued awaiting the shared lock of your leader system to get introduced.
usually do not output instructions to pick desk obtain approaches. With this feature, all objects are going to be developed with whichever table accessibility approach could be the default through restore.
Also, it is not confirmed that pg_dump's output may be loaded right into a server of the older significant Variation — not regardless of whether the dump was taken from the server of that Edition. Loading a dump file into an older server may well need handbook editing in the dump file to eliminate syntax not comprehended by the more mature server. Use from the --quotation-all-identifiers possibility is recommended in cross-Model conditions, as it can stop complications arising from various reserved-term lists in several PostgreSQL versions.
; this selects equally the schema alone, and all its contained objects. When this selection will not be specified, all non-program schemas during the goal database is going to be dumped. Multiple schemas is usually selected by producing many -n switches. The sample
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this selection isn't necessary, because pg_dump will immediately prompt for a password Should the server requires password authentication.