linux清理表空间v,清理 SYSAUX 表空间

「爱情、让人受尽委屈。」 2021-09-07 18:26 500阅读 0赞

1、查看sysaux空间使用率

SELECT FROM (

SELECT D.TABLESPACE\_NAME,

SPACE || 'M' "SUM\_SPACE(M)",

BLOCKS "SUM\_BLOCKS",

SPACE - NVL (FREE\_SPACE, 0) || 'M' "USED\_SPACE(M)",

ROUND ( (1 - NVL (FREE\_SPACE, 0) / SPACE) 100, 2) || '%'

"USED\_RATE(%)",

FREE\_SPACE || 'M' "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

SELECT D.TABLESPACE\_NAME,

SPACE || 'M' "SUM\_SPACE(M)",

BLOCKS SUM\_BLOCKS,

USED\_SPACE || 'M' "USED\_SPACE(M)",

ROUND (NVL (USED\_SPACE, 0) / SPACE 100, 2) || '%' "USED\_RATE(%)",

NVL (FREE\_SPACE, 0) || 'M' "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(+)

ORDER BY 1)

WHERE TABLESPACE\_NAME IN ('SYSAUX','SYSTEM','UNDOTBS1','TEMP');

![19c19c64fb7349f6449ae3a8c30efd9c.png][]

2、查看sysaux\_occupants情况

SELECT occupant\_name "Item",

space\_usage\_kbytes / 1048576 "Space Used (GB)",

schema\_name "Schema",

move\_procedure "Move Procedure"

FROM v$sysaux\_occupants

ORDER BY 1;

![d53f284977acbc736937ad566fc35905.png][]

3、查看表空间段使用情况

select \* from (

select segment\_name,segment\_type,bytes / 1024 / 1024

from dba\_segments

where tablespace\_name = 'SYSAUX'

and bytes / 1024 / 1024 >100

order by bytes desc);

![84991162a78387247b7ad819c42a99b3.png][]

4、生成删除段内容语句

select distinct 'truncate table '||segment\_name||';',s.bytes/1024/1024

from dba\_segments s

where s.segment\_name like 'WRH$%'

and segment\_type in ('TABLE PARTITION', 'TABLE')

and s.bytes/1024/1024>100

order by s.bytes/1024/1024/1024 desc;

![e54a272b29aa9a9caabf9fd66d45a115.png][]

5、删除记录

truncate table WRH$\_ACTIVE\_SESSION\_HISTORY;

truncate table WRH$\_EVENT\_HISTOGRAM;

truncate table WRH$\_LATCH;

truncate table WRH$\_SQLSTAT;

truncate table WRH$\_SYSSTAT;

truncate table WRH$\_PARAMETER;

truncate table WRH$\_SQL\_PLAN;

truncate table WRH$\_LATCH\_MISSES\_SUMMARY;

truncate table WRH$\_SEG\_STAT;

truncate table WRH$\_SYSTEM\_EVENT;

6、重新查看表空间使用率

[19c19c64fb7349f6449ae3a8c30efd9c.png]: /images/20210813/55776d85219e48c19ead67eed922dbbc.png
[d53f284977acbc736937ad566fc35905.png]: /images/20210813/12be2eb8dd5344e0be89418653405e68.png
[84991162a78387247b7ad819c42a99b3.png]: /images/20210813/fa26860053bc43a98db50879b89f1b93.png
[e54a272b29aa9a9caabf9fd66d45a115.png]: /images/20210813/0370e1fcf2d543a6a217609c12f6a9a5.png