Vangelis,
I don't believe you can do file level copying of single databases (especially as they are different versions).
Take a look at pg_dump in the documentation. This will do what you need I think but at a logical level rather than physical.
On Fri, Nov 19, 2010 at 11:52 AM, Vangelis Katsikaros
<ibob17@yahoo.gr> wrote:
Hello
I use postgres 8.3.12 on machineA and 8.4.5 on machineB.
On machineA I have created a tablespace with
CREATE TABLESPACE tablelocation_name LOCATION '/my/location/machineA';
I then created a database with
CREATE DATABASE db_name TABLESPACE tablelocation;
I created tables, inserted data and created indexes.
I now want to "move" the db from '/my/location/machineA' of machine A to '/other/location/machineB' of machine B. My question is how I can do a filesystem backup/restore (I want to move the indexes too - too time consuming to reindex).
Machine B already has a postgres running, and postgres on machine B already has other databases. During this process I have no problem of shutting down postgres.
I have tried some things unsuccessfully:
1) - stop postgres on machine B
- copy dir of tablelocation of machine A to '/other/location/machineB' on machine B
- start postgres on machine B
- CREATE TABLESPACE tablelocation_name LOCATION '/other/location/machineB';
ERROR: directory "/other/location/machineB" is not empty
Regards
Vangelis
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