Oracle查看对象空间使用情况show_space

Oracle查看对象空间使用情况show_space,一个用于查看Oracle数据库对象空间使用情况。下面演示一下如何使用：–工具源码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） 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; 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
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 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）;
END IF; 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;–用法演示create table test_space
AS
select * from dba_tables;
/SYS@orcl> exec show_space（"TEST_SPACE"）;Total Blocks ……………………… 112
Total Bytes ……………………… 917,504
Total MBytes ……………………… 0
Unused Blocks……………………… 3
Unused Bytes ……………………… 24,576
Last Used Ext FileId……………….. 1
Last Used Ext BlockId………………. 115,608
Last Used Block……………………. 5PL/SQL 过程已成功完成。SYS@orcl> delete from test_space;1
已删除3044行。SYS@orcl> commit;1
提交完成。SYS@orcl> exec show_space（"TEST_SPACE"）;1
Total Blocks ……………………… 112
Total Bytes ……………………… 917,504
Total MBytes ……………………… 0
Unused Blocks……………………… 3
Unused Bytes ……………………… 24,576
Last Used Ext FileId……………….. 1
Last Used Ext BlockId………………. 115,608
Last Used Block……………………. 5PL/SQL 过程已成功完成。SYS@orcl> truncate table test_space;表被截断。SYS@orcl> exec show_space（‘TEST_SPACE’）;
Total Blocks ……………………… 8
Total Bytes ……………………… 65,536
Total MBytes ……………………… 0
Unused Blocks……………………… 7
Unused Bytes ……………………… 57,344
Last Used Ext FileId……………….. 1
Last Used Ext BlockId………………. 101,872
Last Used Block……………………. 1PL/SQL 过程已成功完成。drop table test_space;更多Oracle相关信息见Oracle 专题页面 http://www.linuxidc.com/topicnews.aspx？tid=12本文永久更新链接地址