[管理脚本] show_space

-- 执行用户必须具有查看DBA View的相关权限

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 uses 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 space 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;
/