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Q&A How to copy a PostgreSQL database to another machine.

On the server I dumped to a file using these commands user@server:~$ sudo -i -u postgres postgres@server:~$ pg_dump databasename > dumpfile Then I copied dumpfile to my machine and executed...

posted 3y ago by Estela‭  ·  edited 3y ago by Estela‭

Answer
#2: Post edited by user avatar Estela‭ · 2021-06-02T13:29:38Z (almost 3 years ago)
  • On the server I dumped to a file using these commands
  • ```
  • user@server:~$ sudo -i -u postgres
  • user@server:~$ pg_dump databasename > dumpfile
  • ```
  • Then I copied dumpfile to my machine and executed these commands in my machine
  • ```
  • estela@mymachine:~$ sudo -i -u postgres
  • estela@mymachine:~$ psql
  • psql (12.6 (Ubuntu 12.6-0ubuntu0.20.04.1))
  • Type "help" for help.
  • postgres=# DROP DATABASE databasename;
  • DROP DATABASE
  • postgres=# CREATE DATABASE databasename;
  • CREATE DATABASE
  • postgres=# \q
  • postgres@Nienor:~$ cat /tmp/dumpfile | psql databasename
  • ```
  • It seems that it is also possible to do this in a single go without using an intermediate file.
  • ```
  • pg_dump -C -h localhost -U serverDbUser databasename | psql -h mymachine -U estela databasename
  • ```
  • Would not have worked for me because I have my ports closed and the DB can only be accessed locally in my machine. Still would have had to DROP the database in my machine before executing that command though.
  • On the server I dumped to a file using these commands
  • ```
  • user@server:~$ sudo -i -u postgres
  • postgres@server:~$ pg_dump databasename > dumpfile
  • ```
  • Then I copied dumpfile to my machine and executed these commands in my machine
  • ```
  • estela@mymachine:~$ sudo -i -u postgres
  • postgres@mymachine:~$ psql
  • psql (12.6 (Ubuntu 12.6-0ubuntu0.20.04.1))
  • Type "help" for help.
  • postgres=# DROP DATABASE databasename;
  • DROP DATABASE
  • postgres=# CREATE DATABASE databasename;
  • CREATE DATABASE
  • postgres=# \q
  • postgres@mymachine:~$ cat /tmp/dumpfile | psql databasename
  • ```
  • It seems that it is also possible to do this in a single go without using an intermediate file.
  • ```
  • pg_dump -C -h localhost -U serverDbUser databasename | psql -h mymachine -U estela databasename
  • ```
  • Would not have worked for me because I have my ports closed and the DB can only be accessed locally in my machine. Still would have had to DROP the database in my machine before executing that command though.
#1: Initial revision by user avatar Estela‭ · 2021-06-02T13:28:41Z (almost 3 years ago)
On the server I dumped to a file using these commands
```
user@server:~$ sudo -i -u postgres
user@server:~$ pg_dump databasename > dumpfile
```

Then I copied dumpfile to my machine and executed these commands in my machine
```
estela@mymachine:~$ sudo -i -u postgres
estela@mymachine:~$ psql

psql (12.6 (Ubuntu 12.6-0ubuntu0.20.04.1))
Type "help" for help.

postgres=# DROP DATABASE databasename;
DROP DATABASE
postgres=# CREATE DATABASE databasename;
CREATE DATABASE
postgres=# \q
postgres@Nienor:~$ cat /tmp/dumpfile | psql databasename
```

It seems that it is also possible to do this in a single go without using an intermediate file.
```
pg_dump -C -h localhost -U serverDbUser databasename | psql -h mymachine -U estela databasename
```
Would not have worked for me because I have my ports closed and the DB can only be accessed locally in my machine. Still would have had to DROP the database in my machine before executing that command though.