Reg : User name and table spaces

Question

Hi all,
I want to show all the user names in DB and total table apace , Occupied spaceand free space .
Please help on this,
Thanks in advance .

Answer 1

for all users you can query
select * from ALL_USERSbut why are you posting the same problem in 3 different threads.
for calculating size of the table you can use
select sum(bytes) from dba_segments
where segment_name = 'YOUR_TABLE'and for rowsize you can use something like this
select 
     max(vsize(empno)) +
     max(vsize(ename)) +
     max(vsize(job)) +
     max(vsize(mgr)) +
     max(vsize(hiredate)) +
     max(vsize(sal)) +
     max(vsize(comm)) +
     max(vsize(deptno))  Bytes
from
     scott.emp;