How to find free space in a Tablespace?
Hi,
I have a limited access to objects in my database ( do not have access to many tables).
I have been allocated 300GB of size in my tablespace which allows me to create my objects.
Now, I want to find out how much of this tablespace size allocated to me have been used up. I do not have access to dba_data_files or dba_segments.
Is there a way out for me? Could anyone show me a way please?
This query will give you the required information but it makes use of DBA tables.
SELECT B.TABLESPACE_NAME, TBS_SIZE SIZEGB, A.FREE_SPACE FREEGB
from (select tablespace_name, round(sum(bytes)/1024/1024/1024 ,2) as free_space
from dba_free_space
GROUP BY TABLESPACE_NAME) A,
(select tablespace_name, sum(bytes)/1024/1024/1024 as tbs_size
from dba_data_files
group by tablespace_name) b
where a.tablespace_name(+)=b.tablespace_name;
However, you said that you are aware of your tablespace details so the above query can be modified to get the free space in your tablespace. Now I am using user_frees_space and not dba_free_space. Generally user* tables are and should be made accessible to the users.
select tablespace_name, round(sum(bytes)/1024/1024/1024 ,2) as free_space
from user_free_space
where tablespace_name = 'Your tablespace name'
GROUP BY TABLESPACE_NAME;
Ishan
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Hi All
I got a PL/SQL script to find out free space in Oracle7,8,9 db. But because in Oracle 7 there is no maxbytes column in dba_data_files, so this script is not working. I am trying to use cursor and putting sql in a variable so that when program executes, it does not see maxbytes. But it still does not work.
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Script
set feedback off;
set serveroutput on;
set termout off;
set verify off;
spool /u01/app/oracle/admin/common/bck/log/ts.log
declare
v_tablespace_name varchar2(50);
v_total_space number(12) := 0;
v_free_space number(12);
v_space number(12);
v_space_used number(12);
v_pct_free number(6,3);
v_pct_threshold number(3) := 2;
v_table_exist number(2) := 0;
v_sql varchar2(300) := 'select sum(maxbytes) from dba_data_files where TABLESPACE_NAME = tablespace_rec.tablespace_name';
TYPE t_tableref IS REF CURSOR;
t_tablecur t_tableref;
begin
for tablespace_rec in (select tablespace_name from dba_tablespaces)
loop
-- Get the total space for the current tablespace
-- if this FILEXT$ view exists then some of the datafiles have autoextend on;
select count(*) into v_table_exist from dba_tables where table_name = 'FILEXT$';
dbms_output.put_line('table count: ' || v_table_exist);
if v_table_exist = 0 then
OPEN t_tablecur for v_sql;
fetch t_tablecur into v_total_space;
CLOSE t_tablecur;
-- select sum(maxbytes) into v_total_space from dba_data_files
-- where TABLESPACE_NAME = tablespace_rec.tablespace_name;
-- v_total_space := getMaxBytes(tablespace_rec.tablespace_name);
end if;
select sum(bytes) into v_space from dba_data_files
where TABLESPACE_NAME = tablespace_rec.tablespace_name;
if (v_total_space = 0 or v_total_space < v_space) then
select sum(bytes) into v_total_space from dba_data_files
where TABLESPACE_NAME = tablespace_rec.tablespace_name;
select sum(bytes) into v_free_space from dba_free_space
where TABLESPACE_NAME = tablespace_rec.tablespace_name;
else
select sum(bytes) into v_free_space from dba_free_space
where TABLESPACE_NAME = tablespace_rec.tablespace_name;
v_space_used := v_space - v_free_space;
v_free_space := v_total_space - v_space_used;
end if;
-- calculate the percent free for the current tablespace
v_pct_free := (v_free_space / v_total_space) * 100;
if (v_pct_free < v_pct_threshold) then
dbms_output.put_line(tablespace_rec.tablespace_name|| ' - Percent Free: ' || v_pct_free
||'%');
end if;
end loop;
end;
spool off;Hi All
I got a PL/SQL script to find out free space in Oracle7,8,9 db. But because in Oracle 7 there is no maxbytes column in dba_data_files, so this script is not working. I am trying to use cursor and putting sql in a variable so that when program executes, it does not see maxbytes. But it still does not work.
Please help. !!!
Script
set feedback off;
set serveroutput on;
set termout off;
set verify off;
spool /u01/app/oracle/admin/common/bck/log/ts.log
declare
v_tablespace_name varchar2(50);
v_total_space number(12) := 0;
v_free_space number(12);
v_space number(12);
v_space_used number(12);
v_pct_free number(6,3);
v_pct_threshold number(3) := 2;
v_table_exist number(2) := 0;
v_sql varchar2(300) := 'select sum(maxbytes) from dba_data_files where TABLESPACE_NAME = tablespace_rec.tablespace_name';
TYPE t_tableref IS REF CURSOR;
t_tablecur t_tableref;
begin
for tablespace_rec in (select tablespace_name from dba_tablespaces)
loop
-- Get the total space for the current tablespace
-- if this FILEXT$ view exists then some of the datafiles have autoextend on;
select count(*) into v_table_exist from dba_tables where table_name = 'FILEXT$';
dbms_output.put_line('table count: ' || v_table_exist);
if v_table_exist = 0 then
OPEN t_tablecur for v_sql;
fetch t_tablecur into v_total_space;
CLOSE t_tablecur;
-- select sum(maxbytes) into v_total_space from dba_data_files
-- where TABLESPACE_NAME = tablespace_rec.tablespace_name;
-- v_total_space := getMaxBytes(tablespace_rec.tablespace_name);
end if;
select sum(bytes) into v_space from dba_data_files
where TABLESPACE_NAME = tablespace_rec.tablespace_name;
if (v_total_space = 0 or v_total_space < v_space) then
select sum(bytes) into v_total_space from dba_data_files
where TABLESPACE_NAME = tablespace_rec.tablespace_name;
select sum(bytes) into v_free_space from dba_free_space
where TABLESPACE_NAME = tablespace_rec.tablespace_name;
else
select sum(bytes) into v_free_space from dba_free_space
where TABLESPACE_NAME = tablespace_rec.tablespace_name;
v_space_used := v_space - v_free_space;
v_free_space := v_total_space - v_space_used;
end if;
-- calculate the percent free for the current tablespace
v_pct_free := (v_free_space / v_total_space) * 100;
if (v_pct_free < v_pct_threshold) then
dbms_output.put_line(tablespace_rec.tablespace_name|| ' - Percent Free: ' || v_pct_free
||'%');
end if;
end loop;
end;
spool off; -
Free space available in tablespace
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SELECT a.name FileName, a.status, c.bytes/1024 CurrentSize, a.create_bytes/1024 SizeCreated,
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where a.file# = b.file_id(+)
and a.file#=c.file_id
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group by a.name, a.status, c.bytes, a.create_bytes
ORDER BY a.name;
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