清除oracle 回收站(recyclebin)中的表和索引并释放与其相关的空间，还可清空回收站，或者清除表空间中记录的已删除的部分表空间。

   

SELECT * FROM RECYCLEBIN;

--版本1
CREATE TABLE recycle_tmp(version NUMBER(10));
INSERT INTO recycle_tmp VALUES(1);
COMMIT;
DROP TABLE recycle_tmp;
SELECT object_name, original_name, operation, droptime FROM RECYCLEBIN;

回收站有1条记录：

OBJECT_NAME                    ORIGINAL_NAME                    OPERATION DROPTIME
------------------------------ -------------------------------- --------- -------------------
BIN$Ncu0aCGFSXGwbg3KwS5nHA==$0 RECYCLE_TMP                      DROP      2014-05-28:22:00:06

--版本2
CREATE TABLE recycle_tmp(version NUMBER(10));
INSERT INTO recycle_tmp VALUES(2);
COMMIT;
DROP TABLE recycle_tmp;
SELECT object_name, original_name, operation, droptime FROM RECYCLEBIN;

回收站有2条记录：

OBJECT_NAME                    ORIGINAL_NAME                    OPERATION DROPTIME
------------------------------ -------------------------------- --------- -------------------
BIN$34btciE8RySPmHqIlCGnVg==$0 RECYCLE_TMP                      DROP      2014-05-28:22:03:49
BIN$Ncu0aCGFSXGwbg3KwS5nHA==$0 RECYCLE_TMP                      DROP      2014-05-28:22:00:06

--版本3
CREATE TABLE recycle_tmp(version NUMBER(10));
INSERT INTO recycle_tmp VALUES(3);
COMMIT;
DROP TABLE recycle_tmp;
SELECT object_name, original_name, operation, droptime FROM RECYCLEBIN;

回收站有3条记录：

OBJECT_NAME                    ORIGINAL_NAME                    OPERATION DROPTIME
------------------------------ -------------------------------- --------- -------------------
BIN$34btciE8RySPmHqIlCGnVg==$0 RECYCLE_TMP                      DROP      2014-05-28:22:03:49
BIN$pNtKhKu4TY+qYYIQhTsdgg==$0 RECYCLE_TMP                      DROP      2014-05-28:22:04:02
BIN$Ncu0aCGFSXGwbg3KwS5nHA==$0 RECYCLE_TMP                      DROP      2014-05-28:22:00:06

3）清空版本1（默认删除最早版本）

PURGE TABLE recycle_tmp; 
SELECT object_name, original_name, operation, droptime FROM RECYCLEBIN;

OBJECT_NAME                    ORIGINAL_NAME                    OPERATION DROPTIME
------------------------------ -------------------------------- --------- -------------------
BIN$34btciE8RySPmHqIlCGnVg==$0 RECYCLE_TMP                      DROP      2014-05-28:22:03:49
BIN$pNtKhKu4TY+qYYIQhTsdgg==$0 RECYCLE_TMP                      DROP      2014-05-28:22:04:02

PURGE TABLE  "BIN$34btciE8RySPmHqIlCGnVg==$0";
SELECT object_name, original_name, operation, droptime FROM RECYCLEBIN;

OBJECT_NAME                    ORIGINAL_NAME                    OPERATION DROPTIME
------------------------------ -------------------------------- --------- -------------------
BIN$pNtKhKu4TY+qYYIQhTsdgg==$0 RECYCLE_TMP                      DROP      2014-05-28:22:04:02

--还原版本3
FLASHBACK TABLE recycle_tmp TO BEFORE DROP;
SELECT object_name, original_name, operation, droptime FROM RECYCLEBIN;

SELECT * FROM recycle_tmp;

   VERSION
--------------------------
         3

DROP TABLE recycle_tmp;
PURGE RECYCLEBIN; 
SELECT object_name, original_name, operation, droptime FROM RECYCLEBIN;

回收站已清空。