{"id":97,"date":"2026-06-01T10:30:18","date_gmt":"2026-06-01T02:30:18","guid":{"rendered":"https:\/\/yuriblog.online\/?p=97"},"modified":"2026-06-01T10:30:19","modified_gmt":"2026-06-01T02:30:19","slug":"oracle%e6%b8%85%e7%90%86%e8%be%85%e5%8a%a9%e8%a1%a8%e7%a9%ba%e9%97%b4","status":"publish","type":"post","link":"https:\/\/yuriblog.online\/index.php\/2026\/06\/01\/oracle%e6%b8%85%e7%90%86%e8%be%85%e5%8a%a9%e8%a1%a8%e7%a9%ba%e9%97%b4\/","title":{"rendered":"oracle\u6e05\u7406\u8f85\u52a9\u8868\u7a7a\u95f4"},"content":{"rendered":"\n

\u67e5\u8be2\u8868\u7a7a\u95f4\u4f7f\u7528\u7387\u53d1\u73b0\u8f85\u52a9\u8868\u7a7a\u95f4\u4f7f\u7528\u7387\u504f\u9ad8<\/p>\n\n\n\n

set linesize 180;
set pagesize 999;
col tablespace_name for a30
col extent_mg for a10
col “tot_space\/G” for a15
col “used\/G” for a10
col “free\/G” for a10
col “usage%” for a10
select a.tablespace_name,
       round(a.bytes \/ 1024 \/ 1024 \/  1024, 0) “sum G”,
       round((a.bytes – b.bytes) \/ 1024 \/  1024 \/ 1024, 0) “used G”,
       round(b.bytes \/ 1024 \/ 1024 \/  1024, 0) “free G”,
       round(((a.bytes – b.bytes) \/  a.bytes) * 100, 2) “used%”
  from (select tablespace_name,  sum(bytes) bytes
          from dba_data_files
         group by tablespace_name) a,
       (select tablespace_name,  sum(bytes) bytes, max(bytes) largest
          from dba_free_space
         group by tablespace_name) b
where a.tablespace_name =  b.tablespace_name
order by ((a.bytes – b.bytes) \/ a.bytes)  desc;<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u5b9a\u4f4d\u5360\u7528\u7a7a\u95f4\u7684\u5bf9\u8c61<\/strong><\/h4>\n\n\n\n

col OCCUPANT_NAME for a30
SELECT occupant_name, 
       space_usage_kbytes \/ 1024 AS space_used_mb,
       schema_name,
       move_procedure
FROM v$sysaux_occupants
ORDER BY space_usage_kbytes DESC;<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u67e5\u770b\u5177\u4f53\u5bf9\u8c61\u5927\u5c0f<\/strong><\/h4>\n\n\n\n

select OWNER,
       segment_name,
       segment_type,
       PARTITION_NAME,
       bytes \/ 1024 \/ 1024 \/ 1024 Size_GB
  from dba_segments
 where tablespace_name = ‘SYSAUX’
 order by Size_GB desc<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u53d1\u73b0WRH$_ACTIVE_SESSION_HISTORY<\/code>\u548cWRH$_EVENT_HISTOGRAM<\/code>\u7b49AWR\u76f8\u5173\u8868\u5360\u7528\u5927\u91cf\u7a7a\u95f4<\/p>\n\n\n\n

WRH$_ACTIVE_SESSION_HISTORY\uff1a\u4e0eAWR\u76f8\u5173\uff0c\u5b58\u653e\u6d3b\u52a8\u4f1a\u8bdd\u5386\u53f2<\/p>\n\n\n\n

WRH$_EVENT_HISTOGRAM\uff1a\u8bb0\u5f55\u7b49\u5f85 \u4e8b\u4ef6 \u76f4\u65b9\u56fe<\/p>\n\n\n\n

\u4e8c\u3001\u89e3\u51b3\u65b9\u6848\uff1a\u6e05\u7406AWR\u5386\u53f2\u6570\u636e<\/h3>\n\n\n\n

1\u3001\u6e05\u7406\u7279\u5b9a\u5206\u533a\u6570\u636e<\/strong><\/h4>\n\n\n\n

ALTER TABLE WRH$_ACTIVE_SESSION_HISTORY TRUNCATE PARTITION WRH$_ACTIVE_1643269296_0;   <\/p>\n\n\n\n

\u4e5f\u53ef\u4ee5\u4f7f\u7528<\/p>\n\n\n\n

truncate table WRH$_ACTIVE_SESSION_HISTORY;
truncate table WRH$_EVENT_HISTOGRAM; <\/p>\n\n\n\n

\u6216<\/p>\n\n\n\n

execute dbms_workload_repository.drop_snapshot_range(low_snap_id => 0, high_snap_id => 99999999); 
execute dbms_workload_repository.purge_histogram_history;<\/p>\n\n\n\n

2\u3001\u9a8c\u8bc1\u6e05\u7406\u7ed3\u679c<\/strong><\/h4>\n\n\n\n

\u5df2\u91ca\u653e<\/p>\n\n\n\n

\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

\u67e5\u8be2\u8868\u7a7a\u95f4\u4f7f\u7528\u7387\u53d1\u73b0\u8f85\u52a9\u8868\u7a7a\u95f4\u4f7f\u7528\u7387\u504f\u9ad8 set linesize 180;set&nbs […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-97","post","type-post","status-publish","format-standard","hentry","category-oracle"],"_links":{"self":[{"href":"https:\/\/yuriblog.online\/index.php\/wp-json\/wp\/v2\/posts\/97","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yuriblog.online\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yuriblog.online\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yuriblog.online\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yuriblog.online\/index.php\/wp-json\/wp\/v2\/comments?post=97"}],"version-history":[{"count":1,"href":"https:\/\/yuriblog.online\/index.php\/wp-json\/wp\/v2\/posts\/97\/revisions"}],"predecessor-version":[{"id":102,"href":"https:\/\/yuriblog.online\/index.php\/wp-json\/wp\/v2\/posts\/97\/revisions\/102"}],"wp:attachment":[{"href":"https:\/\/yuriblog.online\/index.php\/wp-json\/wp\/v2\/media?parent=97"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yuriblog.online\/index.php\/wp-json\/wp\/v2\/categories?post=97"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yuriblog.online\/index.php\/wp-json\/wp\/v2\/tags?post=97"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}