Tom,
DB2 supports an ALTER TABLESPACE command that allows one to add new containers to an existing tablespace. IMO, that's
farmore supportive of 24x7 usage.
On Wed, 21 Jun 2000 12:10:15 -0400, Tom Lane wrote:
>The right way to address this problem is to invent a "move table to
>new tablespace" command. This'd be pretty trivial to implement based
>on a file-versioning approach: the new version of the pg_class tuple
>has a new tablespace identifier in it.