Online "tablespace" reorg ?

All-
Is there such a thing as online tablespace reorg?

All, I've been tasked to perform an "online reorg of our tablespaces"   From my research I come to these findings.

1 - tablespace reorg is not a popular topic and only seems to be available using oem which due to our diverse environment, I need to use a sqlplus script. From reading ask tom he is claiming there really isn't anything to "reorg" in a tablespace - recreate yes - reorg no Is this correct?

2 My plans would be to create new tablespaces using LMT and ASSM, then alter table move .. new tablespace. The LMT would minimizes future fragmentation and ASSM would benefit by using the alter table shrink; statement to alter the HWM in the future.

Questions,
1 - Is there such a thing as online reorg of tablespaces and if so documentation on its use?
2 - Are there any issues that I'm overlooking in item 2

Thanks
Bob

side note -dbms_refefination looks like what I've been told to look for but that is on the table level and not going to help because the tablespaces are DMT. I don't need to redef the tables I'm really looking to reclaim space from the tablespaces as well as putting the tables in LMT and ASSM mode

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