Specifies the TCP port or area Unix domain socket file extension on which the server is listening for connections. Defaults on the PGPORT surroundings variable, if established, or possibly a compiled-in default.
In the case of the parallel dump, the snapshot name outlined by this feature is applied rather then having a new snapshot.
parameter is interpreted being a sample based on the exact same rules employed by psql's \d instructions (see designs), so a number of schemas may also be chosen by composing wildcard figures during the pattern.
With zstd compression, very long method may possibly Increase the compression ratio, at the price of greater memory use.
this feature is to be used by in-area enhance utilities. Its use for other needs is not advised or supported. The behavior of the option may perhaps improve in future releases all at once.
Dump facts as INSERT instructions (instead of COPY). Controls the maximum amount of rows for each INSERT command. the worth specified need to be a range increased than zero. Any mistake for the duration of restoring will bring about only rows which have been Portion of the problematic INSERT for being missing, in lieu of all the table contents.
When utilizing wildcards, watch out to quote the pattern if necessary to forestall the shell from expanding the wildcards; see Examples down below. the one exception is the fact an vacant pattern is disallowed.
To conduct a parallel dump, the database server ought to assist synchronized snapshots, a feature which was released in PostgreSQL nine.two for Key servers and ten for standbys. With this attribute, databases consumers can guarantee they see the same data set Despite the fact that they use distinct connections.
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Consequently some other access to the desk will not be granted possibly and will queue once the distinctive lock ask for. This includes the employee process endeavoring to dump the desk. with no safeguards This is able to become a traditional deadlock circumstance. To detect this conflict, the pg_dump employee process requests A different shared lock using the NOWAIT option. In case the employee method is just not granted this shared lock, any person else should have asked for an unique lock Meanwhile and there's no way to carry on Along with the dump, so pg_dump has no decision but to abort the dump.
, ...) VALUES ...). This can make restoration quite sluggish; it is especially valuable for generating dumps which can be loaded into non-PostgreSQL databases. Any mistake throughout restoring will bring about only rows which have been part of the problematic INSERT to get shed, rather then your entire table contents.
When dumping facts for a desk partition, make the COPY or INSERT statements concentrate on the root in the partitioning hierarchy which contains it, instead of the partition by itself. This results in the suitable partition to be re-established for every row when the information is loaded.
When making use of wildcards, be cautious to quote the sample if wanted to prevent the shell from expanding the wildcards; see Examples beneath.
Use this In case you have referential integrity checks or other triggers within the tables that you don't want to invoke during information restore.
Some installations Have got a policy towards logging in directly for a superuser, and utilization of this feature enables dumps for being manufactured devoid of violating the policy.
When making use of wildcards, be careful to quotation the sample if needed to stop the shell from increasing the wildcards.