OCP-1Z0-053-V12.02-457题

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457.If two windows overlap, which window attribute will determine whether one should be chosen over the other?

A. WINDOW_PRIORITY

B. PRIORITY

C. PRIORITY_LEVEL

D. WINDOW_PRIORITY_LEVEL

E. OVERLAP_RULE

Answer: A

答案解析：

参考：http://docs.oracle.com/cd/E11882_01/appdev.112/e40758/d_sched.htm#ARPLS72311

WINDOW_PRIORITY

VARCHAR2(4)

Priority of the job relative to other windows: HIGH LOW

 

window_priority

This attribute is only relevant when two windows overlap. Because only one window can be in effect at one time, the window priority determines which window opens. The two possible values for this attribute are 'HIGH' and 'LOW'. A high priority window has precedence over a low priority window, therefore, the low priority window does not open if it overlaps a high priority window. By default, windows are created with priority 'LOW'.

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