6

I'm a bit unclear on how to use the pg_dump/pg_restore duo to move a large-ish database.

Here is the command I use to dump the database (the host and username are taken from environmental variables):

pg_dump --dbname=mydb --format=custom > mydb.dump

I use the custom format because I do this over the network and want to use compression.

When I now try to restore it, I tried this:

pg_restore --dbname=mydb --no-owner mydb.dump

But I get:

pg_restore: [archiver (db)] connection to database "mydb" failed: FATAL:  database "mydb" does not exist

I tried next with the --create option, but that yields the same error message.

Finally I tried passing template1 as a --dbname option:

pg_restore --dbname=template1 --no-owner --create mydb.dump

But here is what I get:

pg_restore: [archiver (db)] Error while PROCESSING TOC:
pg_restore: [archiver (db)] Error from TOC entry 2125; 1262 16395 DATABASE mydb mydbuser
pg_restore: [archiver (db)] could not execute query: ERROR:  invalid locale name: "en_US.utf8"
    Command was: CREATE DATABASE mydb WITH TEMPLATE = template0 ENCODING = 'UTF8' LC_COLLATE = 'en_US.utf8' LC_CTYPE = 'en_US.utf8';



pg_restore: [archiver (db)] could not reconnect to database: FATAL:  database "mydb" does not exist

What am I doing wrong here?

5

When you do

pg_restore --dbname=mydb --no-owner mydb.dump

You are trying to connect to the mydb database which still does not exist. Connect to an existent one and use the --create parameter:

pg_restore --dbname=existentdb --no-owner --create mydb.dump

http://www.postgresql.org/docs/current/static/app-pgrestore.html

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  • I believe this is what I do, when I connect to the template1 database, is it not? Yet I get this error message mentioned in my question. – lindelof Dec 17 '14 at 13:10
  • @lindelof That happens because the mydb database could not be created while connected to template1. Fix the invalid locale name problem first. – Clodoaldo Dec 17 '14 at 13:17

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