alter table shrink space

Hi all,

DB=10.2.0.3

 The segment advisor is reporting a lot of tabels/indexes to be shrinked.

When I "select All" in Grid Control and take a look at the SQL it's like

alter table x1 enabel row movement;

alter table x1 shrink space;

alter table x2 enabel row movement;

alter table x2 shrink space;

and so on.

I executed it on the test node, and it took about 50% of the performance.

Would it speed up the reorg if I split the work into two or more jobs and execute them im parallel?

regards

Daniel