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1z1-064参考資料、1z0-064試験解答

 

Oracle Database 12c: Performance Management and Tuning

Exam Number: 1Z1-064 / 1Z0-064

Duration: 2.5-3.5

Associated Certifications: Oracle Certified Expert, Oracle Database 12c: Performance Management and Tuning

Number of Questions: 150-225

Exam Product Version: Oracle Database 12c,

Passing Score: TBD% Beta exam score reports will be available in CertView approximately 11 weeks after the close of the Beta Exam. You will receive an email with instructions on how to access your beta exam results

Exam Price:

Validated Against:

Exam has been validated for product version 12.1.0.1.0

 

format: Multiple Choice

This exam is currently in beta.

 

Recommended Training

 

TOPICS

Basic Tuning Diagnostics

  • Describe the time model
  • Explain wait events
  • Diagnose performance problems using V$ views

Using Automatic Workload Repository

  • Analyze database performance using AWR reports

Using Metrics and Alerts

  • Monitor performance using metric thresholds and alerts

Using Baselines

  • Use AWR baselines to monitor performance

Using AWR-Based Tools

  • Diagnose performance issues using ADDM
  • Diagnose performance issues using ASH reports

Monitoring Real-Time Database Operation

  • Implement Real-Time Database Operation Monitoring

Monitoring Applications

  • Configure and use services to monitor database performance

Identifying Problem SQL Statements

  • Interpret execution plans
  • Use formatted output of SQL Trace or the optimizer trace to identify poorly performing SQL statements

Influencing the Optimizer

  • Explain how statistics influence the optimizer
  • Configure parameters to influence the optimizer

Reducing the Cost of SQL Operations

  • Use Automatic Segment Space Management to optimize space management
  • Use table compression
  • Diagnose and tune space related issues

Using SQL Performance Analyzer

  • Use SQL Performance Analyzer to test the impact of database changes

SQL Performance Management

  • Manage optimizer statistics
  • Use SQL Profiles and Advisors to tune SQL statements
  • Use SQL Plan Management to tune SQL statements

Using Database Replay

  • Use Database Replay to check impact of system change on performance

Tuning the Shared Pool

  • Diagnose and resolve hard and soft parsing problems
  • Diagnose and resolve performance issues related to the shared pool

Tuning the Buffer Cache

  • Diagnose and resolve performance issues related to the buffer cache

Tuning PGA and Temporary Space

  • Diagnose and resolve performance issues related to PGA
  • Diagnose and resolve performance issues related to temporary tablespace

Using Automatic Memory

  • Use and tune Automatic Shared Memory Management
  • Use and tune Automatic Memory Management

Tuning I/O

  • Diagnose database I/O issues
  • Configure Automatic Storage Management (ASM) for maximum availability

Using the Database Resource Manager

  • Understand and configure the Database Resource Manager

NO.1 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. Enable Automatic Segment Space Management (ASSM) for the undo tablespace.
B. Increase the size of the database buffer cache.
C. Enable temporary undo.
D. Increase the size of the undo tablespace and enable undo retention guarantee.
E. Increase the size of the temporary tablespace or make it autoextensible.
Answer: D

1z1-064資格問題集 1z1-064参考書
Reference:https://docs.oracle.com/cd/B13789_01/server.101/b10739/undo.htm

NO.2 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 will undergo a hard parse.
C. A subsequent execution of the query in this session is likely to undergo a soft parse.
D. The second execution of the query was hard parsed because extended statistics were collected
after the first execution of the query.
E. The second execution of the query was hard parsed because the estimated cardinality was
inaccurate.
Answer: C,E

1z1-064ラーニング

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. DBA_ALERT_HISTORY
B. Oracle Enterprise Manager Cloud Control
C. DBA_ACTIVE_SESSION_HISTORY
D. DBA_OUTSTANDING_ALERTS
E. DBA_THRESHOLDS
F. the alert log
Answer: E,F

1z1-064サービス 1z1-064バージョン

NO.4 Which two result in the latest fragmentation within segments and the least external
fragmentation within tablespaces? (Choose two.)
A. dictionary managed tablespace
B. automatic segment space managed segments
C. freelistmanaged segments with multiplefreelist
D. freelist managed segments with one freelist
E. locally managed tablespaces with uniform extent size
F. locally managed tablespaces that were converted from dictionary managed tablespaces
Answer: A,B

1z1-064独学書籍 1z1-064対象者
Reference: http://docs.oracle.com/cd/B19306_01/server.102/b14220/logical.htm

NO.5 Which two are prerequisites for running the I/O calibration tool? (Choose two.)
A. The database should be opened in restricted mode.
B. For determining latency time, theSTATISTICS_LEVELparameter must be set toTYPICALorALL.
C. The database must be inMOUNTstate.
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 anSPFIL
Answer: C,E

1z1-064ソートキー

NO.6 Which two statements are true about ADDM or Real-Time ADDM? (Choose two.)
A. Real-Time ADDM is automatically invoked by ADDM at the end of every hour.
B. 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.
C. Real-Time ADDM can proactively detect and diagnose transient performance issues that last for a
few seconds.
D. ADDM runs in Partial mode to analyze any hung database issues.
Answer: C,D

1z1-064過去問

NO.7 Examine the parameters set for your database instance: You are administering a database that
supports an OLTP workload. Users complain about the degraded performance of some queries. While
diagnosing, you notice a large number of hard parses occurring for several syntactically almost
identical SQL statements that differ only in literal values in the WHERE clause.
Which two actions would you recommend to improve performance? (Choose two.)
A. Set theCURSOR_SHARINGparameter toFORCE.
B. Set theOPTIMIZER_CAPTURE_SQL_PLAN_BASELINESparameter toTRU
C. Create SQL plan baselines for the almost identical SQL statements and loadthem into the cursor
cache.
D. Use bind variables instead of literals.
E. Create theKEEPcache and cache the tables used in the queries.
Answer: A,B

1z1-064認定資格

NO.8 You observe that queries are performing poorly on the SALES_RECORDS table in your database.
On investigation, you find that at the end of each day the contents of the SALES_RECORDS table are
moved to the SALES_HISTORY table. The delete operations cause the table to be sparsely populated.
The SALES_RECORDS table is created in a tablespace using Automatic Segment Space Management
(ASSM) and row movement is enabled. The table must be accessible 24x7.
Which two tasks would you recommend to improve the performance? (Choose two.)
A. Reorganize theSALES_RECORDStable online by using theDBMS_REDEFINITIONpackage.
B. Move theSALES_RECORDStable to a tablespace by using manual segment space management.
C. Shrink theSALES_RECORDStable by using theALTER TABLE...SHRINKSPACEcommand.
D. Deallocate the space in theSALES_RECORDStable by using theALTER TABLE...DEALLOCATE
UNUSEDcommand.
E. Move theSALES_RECORDStable to a different location by using theALTER TABLE...MOVEcommand.
F. PerformEXPORT, DROP, andIMPORToperations on theSALES_RECORDStable.
Answer: C,D

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試験番号:1z1-064
試験科目:Oracle Database 12c: Performance Management and Tuning
最近更新時間:2016-01-07
問題と解答:全84問
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試験番号:1z0-064
試験科目:Oracle Database 12c: Performance Management and Tuning
最近更新時間:2016-01-07
問題と解答:全84問
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