On Tue, 2010-07-27 at 20:38 +0000, Leif Gunnar Erlandsen wrote:
> I want to move one table from one disk to another.
>
> In order to do this I wanted to create a new tablespace on the new disks and
> issue the command alter table tablename set tablespace tablespacename;
>
> The question is, will this in any way affect the database which is in heavily
> use?
>
> The table in question is the largest one approximately 90GB.
Yes, it will have a performance impact. The table will be locked while
it's being moved to the new tablespace, preventing both reads and writes
until the operation is complete.
Regards,
Jeff Davis