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Avant-garde 1Z0-064 Simple Questions Latest Practice Test Questions VCE PDF Dumps
Qustion No. 1
Which two statements are true about server-generated alerts? (Choose two.)
A. They are always logged in the alert log.
B. They are written to a trace file if the TRACE_ENABLED initialization parameter is set to TRUE.
C. They are generated only when the STATISTICS_LEVEL initialization parameter is set to ALL.
D. They can be generated for user-defined metric thresholds.
E. They appear in the DBA_ALERT_HISTORY view whenever corrective action is taken for an alert.
Answer: D,E
Qustion No. 2
Which two are prerequisites for running the I/O calibration tool? (Choose two.)
A. The database must be in MOUNT state.
B. The database should be opened in restricted mode.
C. For determining latency time, the STATISTICS_LEVEL parameter must be set to TYPICAL or ALL.
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 an SPFILE.
Answer: C,D
Qustion No. 3
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: C
Reference: https://docs.oracle.com/cd/B13789_01/server.101/b10739/undo....
Qustion No. 4
Examine the parameters set for a database instance:
The database supports a mixed workload. Users complain about the increased response time of a few DSS queries. During investigation, you execute the query:
Based on the output, which two are possible ways to improve the performance of the queries? (Choose two.)
A. Enable temporary undo.
B. Enable Automatic Memory Management.
C. Increase the number of DBWn processes.
D. Enable Automatic Shared Memory Management.
E. Increase the value of the SGA_TARGET parameter.
F. Increase the value of the PGA_AGGREGATE_TARGET parameter.
Answer: C,E
Qustion No. 5
You plan to upgrade your production database from Oracle Database 11g to 12c and also to introduce new objects to the database. You also want to upgrade the hardware. You have already created a test system with the upgrades to be made to the production database. As part of the testing, you want to:
. analyze and compare the overall database workload with concurrency and transaction characteristics
. find SQL statements that might get regressed because of the upgrade
. analyze execution plans for SQL statements for which performance might get regressed
. analyze the impact of new schema objects on database performance
Which two tools would you recommend to achieve the objective? (Choose two.)
A. Database Replay
B. SQL Tuning Advisor
C. SQL Access Advisor
D. Automatic Database Diagnostic Monitor (ADDM) compare periods report
E. SQL Performance Analyzer
F. Automatic Workload Repository (AWR) compare periods report
Answer: B,E
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