show_space

CREATE OR REPLACE procedure show_space
( p_segname in varchar2,
p_owner in varchar2 default user,
p_type in varchar2 default 'TABLE',
p_partition in varchar2 default NULL )
-- this procedure users authid current user so it can query DBA_*
-- Views using privileges from a ROLE,and so it can be installed
-- Once per database instead of once per user who wanted to use it
authid current_user
as
l_free_blks number;
l_total_blocks number;
l_total_bytes number;
l_unused_blocks number;
l_unused_bytes number;
l_lastUsedExtFileId number;
l_lastUsedExtBlockId number;
l_LAST_USED_BLOCK number;
l_segment_space_mgmt varchar2(255);
l_unformatted_blocks number;
l_unformatted_bytes number;
l_fs1_blocks number; l_fs1_bytes number;
l_fs2_blocks number; l_fs2_bytes number;
l_fs3_blocks number; l_fs3_bytes number;
l_fs4_blocks number; l_fs4_bytes number;
l_full_blocks number; l_full_bytes number;
-- inline procedure to print out numbers nicely formatted
-- with a simple label
procedure p(p_label in varchar2,p_num in number)
is
begin
dbms_output.put_line (rpad(p_label,40,'.') ||
to_char(p_num,'999,999,999,999') );
end;
begin
-- this query is executed dynamically in order to allow this procedure
-- to be created by a user who has access to DBA_SEGMENTS/TABLESPACES
-- via a role as is customary
-- Note: at runtime,the invoker MUST have access to these two
-- views!
-- this query determines if the object is an ASSM object or not
begin
execute immediate
'select ts.segment_space_management
from dba_segments seg, dba_tablespaces ts
where seg.segment_name = :p_segname
and (:p_partition is null or
seg.partition_name = :p_partition)
and seg.owner = :p_owner
and seg.tablespace_name = ts.tablespace_name'

into l_segment_space_mgmt
using p_segname,p_partition,p_partition,p_owner;
exception
when too_many_rows then
dbms_output.put_line
( 'This must be a partitioned table,use p_partition => ');
return;
end;

-- if the object is in an ASSM tablespace ,we must use this API
-- call to get sapce information ,otherwise we use the FREE_BLOCKS
-- API for the user-managed segments
if l_segment_space_mgmt = 'AUTO'
then
dbms_space.space_usage
(p_owner,p_segname,p_type,l_unformatted_blocks,
l_unformatted_bytes,l_fs1_blocks,l_fs1_bytes,
l_fs2_blocks,l_fs2_bytes,l_fs3_blocks,l_fs3_bytes,
l_fs4_blocks,l_fs4_bytes,l_full_blocks,l_full_bytes,p_partition);

p('Unformatted Blocks', l_unformatted_blocks);
p('FS1 Blocks(0-25)', l_fs1_blocks);
p('FS2 Blocks(25-50)', l_fs2_blocks);
p('FS3 Blocks(50-75)', l_fs3_blocks);
p('FS4 Blocks(75-100)', l_fs4_blocks);
p('Full Blocks', l_full_blocks);
else
dbms_space.free_blocks(
segment_owner => p_owner,
segment_name => p_segname,
segment_type => p_type,
freelist_group_id => 0,
free_blks => l_free_blks);

p('Free Blocks', l_free_blks);

end if;

-- and then the unused space API call to get the rest of the information
dbms_space.unused_space(
segment_owner => p_owner,
segment_name => p_segname,
segment_type => p_type,
partition_name => p_partition,
total_blocks => l_total_blocks,
total_bytes => l_total_bytes,
unused_blocks => l_unused_blocks,
unused_bytes => l_unused_bytes,
LAST_USED_EXTENT_FILE_ID => l_LastUsedExtFileId,
LAST_USED_EXTENT_BLOCK_ID => l_LastUsedExtBlockId,
LAST_USED_BLOCK => l_LAST_USED_BLOCK);

p('Total Blocks', l_total_blocks);
p('Total Bytes', l_total_bytes);
p('Total MBytes', trunc(l_total_bytes/1024/1024));
p('Unused Blocks', l_unused_blocks);
p('Unused Bytes', l_unused_bytes);
p('Last Used Ext FileId', l_LastUsedExtFileId);
p('Last Used Ext BlockId', l_LastUsedExtBlockId);
p('Last Used Block', l_LAST_USED_BLOCK);
end;
/