daafiles used and free space

HII everyone,
I want to check the space used and free of all my (10.2.0.3) database data files, 5,7 redhat platform.
your help is very appreciated thanks.

Published by: 938946 on December 31, 2012 04:38

Your query is unnecessarily complicated and aggregation has messed up.

View dba_data_files, dba_temp_files, and v$ temp_space_header all have one line per tablespace data file. So, you need to aggregate the values based on the name of the tablespace.

Similarly, dba_free_space contains a line by "block" of the free space in the tablespace. So, if your tablespace apps_ts say 4 blocks of free space, then it will have 4 rows for the apps_ts tablespace. Yet once, you will need to overall based on tablespace name before anything else.

The tablespace temp will almost never have any free space because if the Oracle way works. Once a measure is created in the temp tablespace that he is never deallocated. When the transaction who "created" the measure is finished using it, it is marked as being available for other sessions, but it is so more free space.

The query below, that's what I think you are looking for regular storage space. If you really need to show the temp tablespace, then you can add a third request from the union to that all interview to watch dba_temp_files. If there is a free space in the tablespace temp it will appear in dba_free_space.

select tablespace_name,
       round(sum(allocated_space) / 1024 / 1024, 2) "Size (MB)",
       round(sum(free_space) / 1024 / 1024, 2) "Free (MB)",
       round((sum(free_space)/sum(allocated_space)) * 100, 2) "% Free",
       round(((sum(allocated_space) - sum(free_space))/sum(allocated_space)) * 100, 2) "%Used"
from (select tablespace_name, bytes allocated_space, 0 free_space
      from dba_data_files
      union all
      select tablespace_name, 0 allocated_space, bytes free_space
      from dba_free_space)
group by tablespace_name
Order by 4

John

Tags: Database

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