Query:
Select ROUND (SUM (d.bytes) / (1024 * 1024 * 1024)) AS size1,
ROUND (SUM (d.maxbytes) / (1024 * 1024 * 1024)) AS size2
From dba_data_files d where tablespace_name = 'TABLESPACE_NAME'
Output:
size1: 70, size2: 64
As you can see the max bytes allowed for the data files for a particular table-space is only 64GB however it has somehow extended to 70GB!!
Scenario: At a given point the table-space got completely filled (64GB) and I saw 100% used in one of my routine checks. So I went ahead and temporarily truncated some unwanted tables to free up some space. I didn't encounter the cannot extend error
anywhere in any of my processes (although it might have occurred) but what bugs me is that the total size of the table-space just increased from 64GB(max) where it should have stopped to 70(gb).
Please advise how it could have happened or any option I have missed !! and where is the extra 6 GB being stored.
Thanks in advance.
Edit:
Output of :
select bytes,maxbytes,autoextensible
from dba_data_files
where tablespace_name = 'TABLESPACE_NAME';
15728640000 4294967296 YES
30303846400 32212254720 YES
28626124800 32212254720 YES
Best Answer
MAXBYTES
is 0 for datafiles that are not autoextensible, butBYTES
is greater than 0. Use this:But it is possible to manually resize a datafile above
maxbytes
.I updated the query: