SQL script file created with pg_ dump , pg_restore for restoring from a. Restore a database with psql. 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 will produce dump file sizes similar to using gzip, but it has the added advantage that tables can be restored selectively. CREATE TABLE, ALTER TABLE, and COPY SQL statements of source database. To restore these dumps psql command is enough.
Access the command line on the computer where the database is stored. By using the psql tool, you have to execute the entire script. This means you will need to use psql to restore the globals backup file. After restoring a backup, make sure you run ANALYZE to update the statistics. SQL that I can read and is the correct export of the database.
How do I restore a plain text postgres. Ask Question Asked years, months ago. Sorry I meant there is no psql. Hi, i backup my database sewe using a standard process. Login webhosting account via SSH.
The resulting backup file , dbname. I need to import this data to postgresql database with the psql command. Note that the custom format file is gzip-compressed and it is not required to compress it again. Note: this redirection operation does not create the database in question.
This must be done in a separate step prior to running the command. A plain-text script file containing SQL statements and commands that can be executed by the psql command line terminal program to recreate the database objects and load the table. The plain-text SQL file format is the default output for pg_dump.
A role needs the SELECT privilege to run pg_dump according to this line in the documentation: “pg_dump internally executes SELECT statements. PostgreSQL commands, and the file mydb. If the dump is taken using a plain-text format, pg_ dump generates a script file of multiple SQL commands.
It can be restored using psql. A custom format dump , however, is compressed and is not human-readable. A dump taken in plain text format may be slightly larger in size when compared to a custom format dump. I also verified that the versions of pg_ dump and pg_restore on both machines where the same ( .5).
I then copy that file over to our dev server an load it doing a pg_restore -v (verbose mode). One more complicated scenario I have run into is doing a complete database backup with pg_ dump and at some point down the road needing to just split out one table and restore it. This can be a pain because of how the pg_ dump organizes the. Hi, Thank you very much for this useful post. I am new to postgresql and I plan to do daily backup: I use this command for dump: pg_dump –host=myhost –port=myport –username=super –format=c –file=myfile.
Here I show you how you can restore one of the standard backup files created by our end user commands. This article will describe various ways to use of pg_ dump command to backup database. Also you will learn how to restore datbase backup. In the file dialog, select where the import file is locate.
Frankly, I hardly ever do this because I rarely use a non-GNU system, but keep it in mind when writing scripts or documentation intended to be portable. The next thing you should always do when running psql scripts is using the option -X, which prevents the reading of the. Stack Exchange network consists of 1QA communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. PHP upload limits are not an issue anymore. Just split your dumps into pieces and upload it.
To recover it, you just need to invoke psql (not pg_restore) with the file as input.
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