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Exam Code: 1z0-064
Exam Name: Oracle Database 12c: Performance Management and Tuning
One year free update, No help, Full refund!
1z0-064 Exam Prep Total Q&A: 84 Questions and Answers
Last Update: 10-26,2015

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Exam Code: 1z1-064
Exam Name: Oracle Database 12c: Performance Management and Tuning
One year free update, No help, Full refund!
1z1-064 Exam Tests Total Q&A: 84 Questions and Answers
Last Update: 10-26,2015

1z1-064 Actual Test Detail: 1z1-064 Exam Tests

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NO.1 Which two statements are true about ADDM or Real-Time ADDM? (Choose two.)
A. ADDM can be run manually by selecting any range of AWR snapshots available within the AWR
retention period, provided they do not cover a time period when the instances were restarted.
B. ADDM runs in Partial mode to analyze any hung database issues.
C. Real-Time ADDM can proactively detect and diagnose transient performance issues that last for a
few seconds.
D. Real-Time ADDM is automatically invoked by ADDM at the end of every hour.
Answer: B,C

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NO.2 You are administering a database that supports an OLTP workload. An application regularly
creates global temporary tables and a large number of transactions are performed on them. You
notice that performance is degraded because of excessive generation of undo due to a large number
of transactions on the global temporary tables.
What is the recommended action to improve performance? (Choose the best answer.)
A. Increase the size of the undo tablespace and enable undo retention guarantee.
B. Increase the size of the database buffer cache.
C. Enable temporary undo.
D. Increase the size of the temporary tablespace or make it autoextensible.
E. Enable Automatic Segment Space Management (ASSM) for the undo tablespace.
Answer: A

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Reference:https://docs.oracle.com/cd/B13789_01/server.101/b10739/undo.htm

NO.3 You define the warning threshold for the tablespace usage metric for the USERS tablespace to
be 60% and the critical threshold to be 80%.
Which two sources should you check for the alert information when either the warning or the critical
threshold is exceeded? (Choose two.)
A. the alert log
B. Oracle Enterprise Manager Cloud Control
C. DBA_ALERT_HISTORY
D. DBA_OUTSTANDING_ALERTS
E. DBA_ACTIVE_SESSION_HISTORY
F. DBA_THRESHOLDS
Answer: A,F

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NO.4 Which two are prerequisites for running the I/O calibration tool? (Choose two.)
A. The database must be inMOUNTstate.
B. The database should be opened in restricted mode.
C. For determining latency time, theSTATISTICS_LEVELparameter must be set toTYPICALorALL.
D. The disks to be tested must be configured to use asynchronous I/O for data files.
E. The database instance must be started using anSPFILE.
Answer: A,E

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NO.5 You execute this query twice in a session:
Then you query V$SQL_SHARED_CURSOR for details about child cursors as shown.
Which two statements are true? (Choose two.)
A. No statistics were collected during the first execution of the query.
B. A subsequent execution of the query in this session is likely to undergo a soft parse.
C. The second execution of the query was hard parsed because the estimated cardinality was
inaccurate.
D. A subsequent execution of the query in this session will undergo a hard parse.
E. The second execution of the query was hard parsed because extended statistics were collected
after the first execution of the query.
Answer: B,C

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