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至顶网软件频道表空间利用率:修改前与修改后的代码片段

表空间利用率:修改前与修改后的代码片段

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本文将为大家介绍表空间利用率:修改前与修改后的代码片段。

作者:赛迪网 战国烽 来源:天新网 2008年3月21日

关键字: SQL Server

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表空间的利用率:

修改前:

select t.*
from (SELECT D.TABLESPACE_NAME,
SPACE "SUM_SPACE(M)",
BLOCKS SUM_BLOCKS,
SPACE - NVL(FREE_SPACE, 0) "USED_SPACE(M)",
ROUND((1 - NVL(FREE_SPACE, 0) / SPACE) * 100, 2) "USED_RATE(%)",
FREE_SPACE "FREE_SPACE(M)"
FROM (SELECT TABLESPACE_NAME,
ROUND(SUM(BYTES) / (1024 * 1024), 2) SPACE,
SUM(BLOCKS) BLOCKS
FROM DBA_DATA_FILES
GROUP BY TABLESPACE_NAME) D,
(SELECT TABLESPACE_NAME,
ROUND(SUM(BYTES) / (1024 * 1024), 2) FREE_SPACE
FROM DBA_FREE_SPACE
GROUP BY TABLESPACE_NAME) F
WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME(+)
UNION ALL --if have tempfile
SELECT D.TABLESPACE_NAME,
SPACE "SUM_SPACE(M)",
BLOCKS SUM_BLOCKS,
USED_SPACE "USED_SPACE(M)",
ROUND(NVL(USED_SPACE, 0) / SPACE * 100, 2) "USED_RATE(%)",
NVL(FREE_SPACE, 0) "FREE_SPACE(M)"
FROM (SELECT TABLESPACE_NAME,
ROUND(SUM(BYTES) / (1024 * 1024), 2) SPACE,
SUM(BLOCKS) BLOCKS
FROM DBA_TEMP_FILES
GROUP BY TABLESPACE_NAME) D,
(SELECT TABLESPACE_NAME,
ROUND(SUM(BYTES_USED) / (1024 * 1024), 2) USED_SPACE,
ROUND(SUM(BYTES_FREE) / (1024 * 1024), 2) FREE_SPACE
FROM V$TEMP_SPACE_HEADER
GROUP BY TABLESPACE_NAME) F
WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME(+)) t
order by "USED_RATE(%)" desc;

修改后:

select t.*
from (SELECT D.TABLESPACE_NAME,
SPACE "SUM_SPACE(M)",
BLOCKS SUM_BLOCKS,
SPACE - NVL(FREE_SPACE, 0) "USED_SPACE(M)",
ROUND((1 - NVL(FREE_SPACE, 0) / SPACE) * 100, 2) "USED_RATE(%)",
FREE_SPACE "FREE_SPACE(M)"
FROM (SELECT TABLESPACE_NAME,
ROUND(SUM(BYTES) / (1024 * 1024), 2) SPACE,
SUM(BLOCKS) BLOCKS
FROM DBA_DATA_FILES
GROUP BY TABLESPACE_NAME) D,
(SELECT TABLESPACE_NAME,
ROUND(SUM(BYTES) / (1024 * 1024), 2) FREE_SPACE
FROM DBA_FREE_SPACE
GROUP BY TABLESPACE_NAME) F
WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME(+)
UNION ALL --if have tempfile
SELECT D.TABLESPACE_NAME,
SPACE "SUM_SPACE(M)",
BLOCKS SUM_BLOCKS,
USED_SPACE "USED_SPACE(M)",
ROUND(NVL(USED_SPACE, 0) / SPACE * 100, 2) "USED_RATE(%)",
SPACE - USED_SPACE "FREE_SPACE(M)"
FROM (SELECT TABLESPACE_NAME,
ROUND(SUM(BYTES) / (1024 * 1024), 2) SPACE,
SUM(BLOCKS) BLOCKS
FROM DBA_TEMP_FILES
GROUP BY TABLESPACE_NAME) D,
(SELECT TABLESPACE,
ROUND(SUM(BLOCKS * 8192) / (1024 * 1024), 2) USED_SPACE
FROM V$SORT_USAGE
GROUP BY TABLESPACE) F
WHERE D.TABLESPACE_NAME = F.TABLESPACE(+)) t
order by "USED_RATE(%)" desc;
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