【单选题】At a particular time of computation the value of a counting semaphore is 7.Then 20 P operations and 15 V operations were completed on this semaphore. The resulting value of the semaphore is?
【单选题】There is more than one way to set the server to detect and affect long running operations automatically. What is the best choice of you want to reduce the impact of long running operations on other us...
A.
Define user profiles and set the CPU_PER_CALL limit.
B.
Define a SWITCH_TIME for a plan in the Resource Manager.
C.
Create a batch job that checks V$SESSION_LONGOPS;the batch job alters the session priority of the long running operations.
D.
Create a user defined event in the Oracle Enterprise Manager, which monitors V$SESSION_LONGOPS.