The DLP schema is created within two tablespaces in the Oracle database: USERS and LOB_TABLESPACE.
While it is easy to find all of the tables belonging to the schema in the USERS tablespace, no tables are created in the LOB_TABLESPACE making it difficult to describe how the tablespace is used and why it grows as rapidly as it does.
The LOB_TABLESPACE is occupied by objects but they aren't tables; they are columns. Many people, including DBAs get hung-up by the fact that you can create a table in one tablespace with the caveat that one or more of it's columns are in another tablespace.To find the lob columns that live in the LOB_TABLESPACE, but are associated with tables in another, run the following script:
select column_name, table_name