Re:

JinMing Qiu wrote:

> Hello everyone! How to move a postgresql database to another
> directory?

I think the procedure below would work:

1, create the new directory and assign the read write previlege to
postgres superuser;
2, shut down all your postmaster using command like (assume you are
using bash on linux):
postgres(at)db$ killall -SIGTERM postmaster
3, move the totally data base to the new directory using command like:

postgres(at)db$ tar cvf - /the_old_db_location | tar -C
/the_new_db_location xvf -

4, remove the file in old location: (of course, make a backup is a good
idea)
postgres(at)db$ rm -r /the_old_db_location

5, make a symbol link to the new location, thus avoid the environment
variable changes:

postgres(at)db$ln -s /the_new_db_location /the_old_db_location

6, restart your postmaster:
postgres(at)db$ (something you've used before)

that's it