In your database, the TBS PERCENT USED parameter is set to 60 and the TBS PERCENT FREE parameter is set to 20.

The movement of all segments to a target tablespace with a higher degree of compression, on a different storage tier, when the source tablespace exceeds TBS PERCENT USED 

The movement of some blocks to a target tablespace with a lower degree of compression, on a different storage tier, when the source tablespace exceeds TBS PERCENT USED 

The movement of some segments to a target tablespace with a higher degree of compression, on a different storage tier, when the source tablespace exceeds TBS PERCENT USED 

Setting the target tablespace to read-only after the segments are moved 

Taking the target tablespace offline after the segments are moved