How to find a tablespace is fragmented or not?

Hi,
I was aksed to find wether a tablespace is fragmented or not. if fragmented i need to relase the fragmented space. Can any body has solution for the same.
Regards
DBA.

1) What do you believe this query shows?
2) How do you define "bubble fragmentation" and "honeycomb fragmentation"?
3) Why (and when) do you believe a DBA would act to solve either problem?
4) Since your script is identifying tablespaces, how would you propose determining which objects in your estimation need to be rebuilt?
5) How have the answer to these questions changed since the move to locally managed tablespaces a decade ago?
Back in the old days of dictionary managed tablespaces, fragmentation was a real thing that DBAs had to keep track of because every table was potentially allocating differently sized extents in a tablespace, there were lots of odd extent sizes, and it was relatively easy to end up with free space in a data file that no object in the tablespace could ever use because it was smaller than the next extent size of the objects. That is no longer a concern with locally managed tablespace-- it is not (practically) possible to have (a reasonable quantity) of disk space that is free but unusable in a locally managed tablespace, particularly when you are using uniform extents.
Justin

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How to find a tablespace is fragmented or not?

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