Postgresql - backup database and restore on differ

问题:

I did backup on database on different server and that has different role than I need, with this command:

pg_dump -Fc db_name -f db_name.dump

Then I copied backup to another server where I need to restore the database, but there is no such owner that was used for that database. Let say database has owner owner1, but on different server I only have owner2 and I need to restore that database and change owner.

What I did on another server when restoring:

createdb -p 5433 -T template0 db_name 
pg_restore -p 5433 --role=owner2 -d db_name db_name.dump

But when restore is run I get these errors:

pg_restore: [archiver (db)] could not execute query: ERROR:  role "owner1" does not exist

How can I specify it so it would change owner? Or is it impossible?

回答1:

You should use the --no-owner option, this stops pg_restore trying to set the ownership of the objects to the original owner. Instead the objects will be owned by the user specified by --role

createdb -p 5433 -T template0 db_name 
pg_restore -p 5433 --no-owner --role=owner2 -d db_name db_name.dump

pg_restore doc