select distinct
a.tablespace_name,
sum(a.bytes)
as free_bytes,
sum(b.BYTES)
as Total_Bytes
from dba_free_space a,
dba_data_files b
Where a.tablespace_name =
b.tablespace_name
group by a.tablespace_nameselect segment_name,tablespace_name,bytes,blocks
FROM DBA_SEGMENTS
where segment_type='TABLE' AND TABLESPACE_NAME
NOT IN('SYSTEM') order by bytes desc
DatabaseJournal.com publishes relevant, up-to-date and pragmatic articles on the use of database hardware and management tools and serves as a forum for professional knowledge about proprietary, open source and cloud-based databases--foundational technology for all IT systems. We publish insightful articles about new products, best practices and trends; readers help each other out on various database questions and problems. Database management systems (DBMS) and database security processes are also key areas of focus at DatabaseJournal.com.
Property of TechnologyAdvice. © 2026 TechnologyAdvice. All Rights Reserved
Advertiser Disclosure: Some of the products that appear on this site are from companies from which TechnologyAdvice receives compensation. This compensation may impact how and where products appear on this site including, for example, the order in which they appear. TechnologyAdvice does not include all companies or all types of products available in the marketplace.