Specifies a role name to be used to build the dump. this feature results in pg_dump to difficulty a established purpose rolename
In the case of the parallel dump, the snapshot name described by this option is utilized rather then taking a whole new snapshot.
These statements will fall short if the script is operate Except it really is started off by a superuser (or exactly the same consumer that owns all the objects from the script). To make a script that may be restored by any user, but will give that user possession of many of the objects, specify -O.
When utilized with one of many archive file formats and combined with pg_restore, pg_dump supplies a versatile archival and transfer mechanism. pg_dump can be utilized to backup a complete databases, then pg_restore can be used to examine the archive and/or select which aspects of the database are to become restored.
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frequently, this feature is beneficial for tests but shouldn't be utilized when dumping knowledge from production set up.
Specifies the identify of your databases to generally be dumped. If this is simply not specified, the natural environment variable PGDATABASE is used. If that isn't set, the person title specified for your connection is utilised.
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hardly ever situation a password prompt. Should the server calls for password authentication and also a password will not be accessible by other usually means such as a .pgpass file, the link try will fail. this feature might be handy in batch Work and scripts in which no consumer is existing to enter a password.
nonetheless, the tar structure will not assist compression. Also, when utilizing tar format the relative order of table knowledge things cannot be transformed all through restore.
When dumping info to get a table partition, make the COPY or INSERT statements target the root of your partitioning hierarchy that contains it, as an alternative to the partition alone. This brings about the suitable partition being re-established for each row when the information is loaded.
Also, It's not necessarily guaranteed that pg_dump's output is usually loaded right into a server of an older important Edition — not even if the dump was taken from the server of that Edition. Loading a dump file into an older server could call for guide editing with the dump file to eliminate syntax not understood with the older server. Use on the --quotation-all-identifiers solution is usually recommended in cross-Variation instances, as it may possibly avoid troubles arising from different reserved-term lists in several PostgreSQL variations.
Use this For those who have referential integrity checks or other triggers on the tables that you don't would like to invoke through knowledge restore.
Some installations Possess a plan against logging in directly as a superuser, and use of this selection enables dumps to become built without the need of violating the plan.
make use of a serializable transaction for the dump, in order that the snapshot made use of is in keeping with afterwards database states; but try this by awaiting a point inside the transaction stream at which no anomalies may be present, in order that there isn't a threat on the dump failing or resulting in other transactions to roll back which has a serialization_failure. See Chapter thirteen For more info about transaction isolation and concurrency Command.