更新 oracle/oracle表占用分析.md

oracle/oracle表占用分析.md

@@ -1,3 +1,9 @@
+```
+SELECT * FROM v$version;
+
+```
+
+
 表占用分析
 
 ```
@@ -51,7 +57,27 @@ ALTER TABLE T_FOC_CREW_MQ_NEW SHRINK SPACE;
 
 
 
-
+回收站
+```
+SELECT
+    original_name AS "原对象名",
+    object_name AS "回收站对象名",
+    type AS "类型",
+    droptime AS "删除时间",
+    can_undrop AS "是否可还原"
+FROM user_recyclebin
+ORDER BY droptime DESC;
+
+--清空回收站
+PURGE RECYCLEBIN;
+
+
+
+-- 如果想看回收站总共占了多少 MB
+SELECT ROUND(SUM(bytes)/1024/1024, 2) AS "回收站总占用(MB)"
+FROM user_segments
+WHERE segment_name LIKE 'BIN$%';
+```