OCP-1Z0-053-200题-105题-271

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.