用如下语句查询表空间
select upper(f.tablespace_name) "ts-name",
d.tot_grootte_mb "ts-bytes(m)",
d.tot_grootte_mb - f.total_bytes "ts-used (m)",
f.total_bytes "ts-free(m)",
to_char(round((d.tot_grootte_mb - f.total_bytes) / d.tot_grootte_mb * 100,
2),
'990.99') "ts-per"
from (select tablespace_name,
round(sum(bytes) / (1024 * 1024), 2) total_bytes,
round(max(bytes) / (1024 * 1024), 2) max_bytes
from sys.dba_free_space
group by tablespace_name) f,
(select dd.tablespace_name,
round(sum(dd.bytes) / (1024 * 1024), 2) tot_grootte_mb
from sys.dba_data_files dd
group by dd.tablespace_name) d
where d.tablespace_name = f.tablespace_name
order by 5 desc;
查询各个sysaux表空间的使用情况
SQL> select * from (select segment_name, segment_type,bytes / 1024 / 1024 from dba_segments where tablespace_name = 'SYSAUX'and bytes / 1024 / 1024 >1000 order by bytes desc);
SEGMENT_NAME SEGMENT_TYPE BYTES/1024/1024
--------------------------------------------------------------------------------- ------------------ ---------------
WRH$_ACTIVE_SESSION_HISTORY TABLE PARTITION7293
WRH$_LATCH_MISSES_SUMMARY_PK INDEX PARTITION2664
WRH$_LATCH_MISSES_SUMMARY TABLE PARTITION2336
WRH$_EVENT_HISTOGRAM_PK
INDEX PARTITION2087
WRH$_EVENT_HISTOGRAM TABLE PARTITION1835
WRH$_SQLSTAT TABLE PARTITION1690
WRH$_LATCH TABLE PARTITION1101
生成truncate语句
select distinct 'truncate table '||segment_name||';',s.bytes/1024/1024
from dba_segments s
where s.segment_name like 'WRH$%'
and segment_type in ('TABLE PARTITION', 'TABLE')
and s.bytes/1024/1024>100
order by s.bytes/1024/1024/1024 desc;
truncate table WRH$_ACTIVE_SESSION_HISTORY;
truncate table WRH$_ACTIVE_SESSION_HISTORY;
truncate table WRH$_LATCH_MISSES_SUMMARY;
truncate table WRH$_EVENT_HISTOGRAM;
truncate table WRH$_SQLSTAT;
truncate table WRH$_LATCH;
truncate table WRH$_SYSSTAT;
truncate table WRH$_SEG_STAT;
truncate table WRH$_PARAMETER;
truncate table WRH$_SYSTEM_EVENT;
truncate table WRH$_SQL_PLAN;
truncate table WRH$_DLM_MISC;
truncate table WRH$_SERVICE_STAT;
truncate table WRH$_ROWCACHE_SUMMARY;
truncate table WRH$_TABLESPACE_STAT;
truncate table WRH$_MVPARAMETER;