QUESTION 105
Examine the output of the query that you executed tolist the objects in the recycle bin:
SQL> SELECT original_name, droptime, dropscn FROM user_recyclebin;
ORIGINAL_NAME DROPTIME DROPSCN
-------------------------- ------------------------------- -------------------
SALES_TAB 2007-12-11:13:37:11 4472036
SALES_TAB 2007-12-11:13:49:30 4472988
SALES_TAB 2007-12-11:13:55:39 4473100
You verified that no table named SALES_TAB exists in the schema. Then you executed the following
command to purge the objects in the recycle bin:
SQL> PURGE TABLE sales_tab;
What would be the outcome of this command?
A. All three tables in the recycle bin are purged
B. Only the table with the oldest DROPSCN is purged
C. The command returns an error because multiple entries with the same name exist in the recycle bin
D. Only the table with the latest DROPSCN is purged
Answer: B
同271题：http://blog.csdn.net/rlhua/article/details/14492517
Explanation/Reference:
Section: SQL, PL/SQL, Packages, Functions, Jobs & Views
verified
http://download.oracle.com/docs/cd/B14117_01/server.101/b10759/statements_9018.htm
If you specify the user-specified name, and if the recycle bin contains more than one object of that name, then
the database purges the object that has been in therecycle bin the longest.
Use the PURGE statement to remove a table or index from your recycle bin and release all of the space
associated with the object, or to remove the entirerecycle bin, or to remove part of all of a droppedtablespace
from the recycle bin.
When the database purges a table, all table partitions, LOBs and LOB partitions, indexes, and other dependent
objects of that table are also purged.
The database object must reside in your own schema or you must have the DROP ANY... system privilege for
the type of object to be purged, or you must have the SYSDBA system privilege.