使用 pg_dump 和 pg_restore 转储和恢复 postgres 数据库

Question

I'm trying to dump and restore a Postgres database, at once.It means that when I restore it, I have nothing to do but call pg_restore. To dump I tryed the follow two instructions:

pg_dump -U postgres  -f noc_backup_2022_12_06.dump -Fc treebase

and with the option -C (include the create db instructions)

pg_dump -U postgres  -C -f backup_2022_12_06.dump -Fc treebase

Notice that the file name in the first is noc_backup... in the second is backup... Now I try to restore: If I call the follow instructions:

pg_restore  -U postgres -fnoc_backup_2022_12_06.dump
pg_restore  -U postgres -fbackup_2022_12_06.dump
pg_restore  -U postgres -C -fbackup_2022_12_06.dump
pg_restore  -U postgres -C -fnoc_backup_2022_12_06.dump

It get stuck, no request of password, no error message, nothing happen I have to CTRL+C to unlock the prompt.

pg_restore  -U postgres -C  -dtreebase backup_2022_12_06.dump
pg_restore  -U postgres -C  -dtreebase noc_backup_2022_12_06.dump
pg_restore  -U postgres -dtreebase noc_backup_2022_12_06.dump
pg_restore  -U postgres -dtreebase backup_2022_12_06.dump

Each of them raise an error that the database "treebase" doesn't exists. To successfully restore a database I have to login with psql and CREATE DATABASE . Then I launch:

pg_restore  -U postgres -dtreebase noc_backup_2022_12_06.dump

And it works. Since the backup should be executed from the final user, I would make it easiest as possible, two instructions to copy-paste and stop. The question is: How do restore whole database only with pg_restore

Answer 1

I solved, the winning combination is: dump the database with the following instruction, with -C option to include the create database instruction:

pg_dump -U postgres -C  -f backup_2022_12_06.dump -Fc treebase

then to restore access to database postgres, not treebase and include the -C command to create the database

pg_restore  -U postgres -C -dpostgres -Fc backup_2022_12_06.dump