postgresql - Restoring from pg_dump with foreign key constraints ...
2015年10月15日 · Or you can remove the foreign key constraint before restoring and recreate it afterwards. In a full dump, these are being created after the data is loaded into the tables. - user6219. Also, pg_dump -Fc and pg_restore are almost always the way to go in preference to using SQL dumps and psql.
How to get a working and complete PostgreSQL DB backup and test
$ pg_dumpall -U postgres -h localhost -p 5433 --clean --file=dump.sql This includes the globals--information about users and groups, tablespaces, and so on. If I were going to backup a single database and move it to a scratch server, I'd dump the database with pg_dump, and dump the globals with either . pg_dumpall --globals-only, or
postgresql - how to track progress of a large postgres dump
2022年5月7日 · Is there a way to see the progress of a pg_dump operation on a big db (ie > 1GB)? adding the -v option just dumps text on the screen, but doesn't give me much meaningful tracking information.
postgresql - Backup only one schema and restore it on another …
2016年11月13日 · You can select which schemas to dump with the ... -- PostgreSQL database dump -- Dumped from database ...
postgresql - How to dump multiple databases of the same cluster …
2018年11月30日 · pg_dump dumps a single DB.The manual: pg_dump only dumps a single database. To back up an entire cluster, or to back up global objects that are common to all databases in a cluster (such as roles and tablespaces), use pg_dumpall.
postgresql: how do I dump and restore roles for a cluster?
Since pg_dump dumps a single database, you can't extract roles with that utility. The pg_dumpall --roles-only command you proposed will do the work - however you may need to filter its output so that only desired roles will be created in the new cluster.
postgresql - Export Postgres table as json - Database …
2015年1月29日 · Try here for a basic intro to PostgreSQL and JSON. Also, PostgreSQL documentation is pretty good, so try it here. Check out the pretty_bool option. Your original question was "Is there a way to export postgres table data as JSON". You wanted it in this format {'id':1,'name':'David'} {'id':2,'name':'James'} ...
backup - postgresql pg_dump out of memory - Database …
2019年10月17日 · When i try to run pg_dump, to dump all the data it is killed by "out of memory". My Postgre SQL server have had 20gb of RAMs and when I started a pg_dump, it kills after about ~30minutes. saying out of memory. DB with 20GB of rams and pg_dump is killed by this *.log line: pg_dump: reading large objects Kern.log:
How to estimate the size of a PostgreSQL DB to be dumped …
2020年4月7日 · It's hard to predict the size of the dump file. large fields will be compressed using LZ77 so the result could be larger than the table files. Also , bytea, bit[], jsonb. integers, dates, and timestamps, expressed in ASCII are larger than they are on disk.
restoring Postgres database: pg_restore -vs- just using psql
If you created an SQL-format dump, all you can use is psql. If you created a custom-format (pg_dump -Fc) or directory-format (pg_dump -Fd) dump, you can and must use pg_restore. Custom and directory format dumps offer a lot of advantages over plain SQL script dumps, and I use them exclusively.