When does Oracle9i flag an index as being used in the V$OBJECT_USAGE view?
A. During a query’s parse time only.
B. During a query’s execution time only.
C. During any kind of DML statement execution.
D. During the execution of an INSERT statement only.
Answer: A
Explanation:
During a query's parse time Oracle9i flags an index as being used in the V$OBJECT_USAGE view. You can query the V$OBJECT_USAGE view to review the index utilization data. If the index has been used within the period of time it was monitored, the USED column within this view will contain a YES value; it will contain a NO otherwise.
Incorrect Answers
B: During a query's execution time Oracle9i does not flag an index as being used in the V$OBJECT_USAGE view.
C: Oracle9i flags an index as being used in the V$OBJECT_USAGE view during a query's parse time, not during any kind of DML statement execution.
D: Oracle9i flags an index as being used in the V$OBJECT_USAGE view during a query's parse time, not during execution of an INSERT statement.
OCP Oracle9i Database: New Features for Administrators, Daniel Benjamin, p. 212-214
Chapter 4: Performance and Scalability Enhancements
Oracle 9i New Features, Robert Freeman, p. 56-57
Chapter 2: Oracle9i Architecture Changes
QUESTION NO: 12
Using a bitmap structure to manage database object space has several benefits over using freelist structures. Which three are benefits of managing space using automaticsegment-space managed objects? (Choose three)
A. It readily responds to dynamic changes for concurrent access.
B. It improves performance and space utilization in a multiple-instance environment.
C. It requires fewer space related options then freelist managed structures.
D. It improves performance for SYSTEM tablespaces where a high degree of concurrency is required.
Answer: A, B, D
Explanation:
Managing space with automatic segment-space managed objects can respond to dynamic changes for concurrent access, improves performance and space utilization in a multi-instance environment and improves performance for SYSTEM tablespaces where a high degree of concurrency is required.
Incorrect Answers
C: It requires more space related options than freelist managed structures.
OCP Oracle9i Database: New Features for Administrators, Daniel Benjamin, p. 138-140
Chapter 3: Manageability Enhancements
Oracle 9i New Features, Robert Freeman, p. 53-54
Chapter 2: Oracle9i Architecture Changes
QUESTION NO: 13
The EMPLOYEES table has six indexes and DML operations are slow. Which command begins monitoring the EMPLOYEE_IDX_FK index to determine whether it has been used by an execution plan?
A. ALTER TABLE employees monitor index employee_idx_fk;
B. ALTER INDEX employee_idx_fk monitoring on;
C. ALTER TABLE employees monitor all indexes;
D. ALTER INDEX employee_idx_fk monitoring usage;
Answer: D
Explanation:
This statement provides correct syntax to start monitoring the EMPLOYEE_IDX_FK index to determine whether it has been used by an execution plan.
Incorrect Answers
A: This command requires MONITORING USAGE clause with ALTER INDEX command to be used, not MONITOR INDEX clause with ALTER TABLE command.
B: This command requires MONITORING USAGE clause to be used, not MONITORING ON clause.
C: This command requires MONITORING USAGE clause with ALTER INDEX command to be used, not MONITOR ALL INDEXES clause with ALTER TABLE command.
OCP Oracle9i Database: New Features for Administrators, Daniel Benjamin, p. 212-214
Chapter 4: Performance and Scalability Enhancements
Oracle 9i New Features, Robert Freeman, p. 56-59
Chapter 2: Oracle9i Architecture Changes
QUESTION NO: 14
You can control instance recover performance by setting parameters to define targets for ______.
A. The size of the redo buffer in SGA.
B. The instance that will perform recovery in Real Application Cluster database.
C. The number of blocks to be read during instance recovery, or the time needed to complete instance recovery.
D. The number of passes through the redo logs made by the recovery process to identify blocks needing recovery.
Answer: C
Explanation:
Oracle9i added the FAST_START_MTTR_TARGET parameter to define targets for the number of blocks to be read during instance recovery, or the time needed to complete instance recovery. Oracle internally uses the FAST_START_MTTR_TARGET parameter value to calculate and set the FAST_START_IO_TARGET and LOG_CHECKPOINT_INTERVAL parameters. If you specified the FAST_START_IO_TARGET and LOG_CHECKPOINT_INTERVAL parameter values, they will override the values Oracle calculates from the FAST_START_MTTR_TARGET parameter.
Incorrect Answers
A: You cannot control instance recovery performance by setting parameters to define targets for the size of the redo buffer in the SGA
B: It’s not possible to control instance recovery performance for the instance that will perform recovery in a Real Application Clusters database.
D: The number of passes through the redo logs made by the recovery process to identify blocks needing recovery will not help to control instance recovery performance.
OCP Oracle9i Database: New Features for Administrators, Daniel Benjamin, p. 42-45
Chapter 2: Availability Enhancements
Oracle 9i New Features, Robert Freeman, p. 73-75
Chapter 3: New Oracle9i Availability and Recoverability Features
QUESTION NO: 15
Which three statements are true about the privileged connection options available in Oracle9i? (Choose three)
A. The CONNECT INTERNAL is disallowed.
B. The Server Manager tool is no longer supplied.
C. The listener must be running to make a connection.
D. The use of remote password login file (orapw
Answer: A, B, C
Explanation:
The CONNECT INTERNAL is disallowed in Oracle9i. The Server Manager tool is no longer supplied also. And the listener must be running to make a connection.
Incorrect Answers
D: The use of a remote password login file (orapw
OCP Oracle9i Database: New Features for Administrators, Daniel Benjamin, p. 5-10
Chapter 1: Security Enhancements
Oracle 9i New Features, Robert Freeman, p. 132-135
Chapter 5: Miscellaneous Oracle9i Features and Enhancements
