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1Z0-064在線題庫，Oracle 1Z0-064證照信息 & Oracle Database 12C: Performance Management And Tuning - Royalholidayclubbed
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如今在IT業裏面臨著激烈的競爭，你會感到力不從心，這是必然的。你要做的是為你的事業保駕護航，當然，你有很多選擇，我推薦Royalholidayclubbed Oracle的1z0-064在線題庫的考試試題及答案，它是幫助你成功獲得IT認證的好幫手，所以你還在等什麼呢，去獲得新的Royalholidayclubbed Oracle的1z0-064在線題庫的考試培訓資料吧。 言行一致是成功的開始，既然你選擇通過苛刻的IT認證考試，那麼你就得付出你的行動，取得優異的成績獲得認證，Royalholidayclubbed Oracle的1z0-064在線題庫考試培訓資料是通過這個考試的最佳培訓資料，有了它就猶如有了一個成功的法寶，Royalholidayclubbed Oracle的1z0-064在線題庫考試培訓資料是百分百信得過的培訓資料，相信你也是百分百能通過這次考試的。 經過相關的研究材料證明，通過Oracle的1z0-064在線題庫考試認證是非常困難的，不過不要害怕，我們Royalholidayclubbed擁有經驗豐富的IT專業人士的專家，經過多年艱苦的工作，我們Royalholidayclubbed已經編譯好最先進的Oracle的1z0-064在線題庫考試認證培訓資料，其中包括試題及答案，因此我們Royalholidayclubbed是你通過這次考試的最佳資源網站。
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1z0-064 PDF DEMO:
QUESTION NO: 1
Examine the partial AWR report taken for a time period of 60 minutes:
Which two inferences can you draw from this report? (Choose two.)
A. The CPUs are busy executing server processes and background processes for a considerable amount of CPU time.
B. The database user calls are spending most of their time waiting for sessions that are in more important consumer groups.
C. The database user calls are spending most of their time in I/O for single block reads.
D. The database user calls are issuing frequent explicit commits.
Answer: A,C
QUESTION NO: 2
Examine the command to change a parameter value from the default to 50:
SQL> ALTER SYSTEM SET OPTIMIZER_INDEX_COST_ADJ = 50;
What is the effect of changing the value of the parameter? (Choose the best answer.)
A. It influences the optimizer to use bitmap indexes as the estimated cost of conversion from bitmap to rowid is reduced.
B. It influences the optimizer to use indexes instead of full table scans as the estimated cost of using an index is reduced.
C. It influences the optimizer to always use fast full index scans as the estimated cost of using an index is reduced.
D. It influences the optimizer to use full table scans instead of index scans as the estimated cost of full table scan is reduced.
Answer: B
QUESTION NO: 3
Which two are prerequisites for running the I/O calibration tool? (Choose two.)
A. The database must be in MOUNT state.
B. The disks to be tested must be configured to use asynchronous I/O for data files.
C. The database should be opened in restricted mode.
D. The database instance must be started using an SPFIL
E. For determining latency time, the STATISTICS_LEVEL parameter must be set to TYPICAL or ALL.
Answer: A,D
QUESTION NO: 4
Examine the parameters set for your database instance:
You are administrating a database that supports a DSS workload. You make some changes to the sizes of memory components. Consequently, you receive this error:
Which three actions might resolve the issue?
A. pinning the cursors in the shared pool
B. setting the value of MEMORY_MAX_TARGET to the value of the SGA_MAX_SIZE parameter
C. enabling Automatic Memory Management for the database instance
D. increasing the size of the shared pool
E. setting the PGA_AGGREGATE_TARGET parameter to 0 and the MEMORY_TARGET parameter to the value of the PGA_AGGREGATE_TARGET parameter
F. enabling Automatic Shared Memory Management for the database instance
Answer: B,C,F
QUESTION NO: 5
In which three situations does DB time always increase? (Choose three.)
A. when I/O wait time increases for foreground processes
B. when more connections are made to a database instance
C. when CPU consumption by background processes increases
D. when the host is CPU bound for foreground processes
E. when wait time for data to be sent over a network increases
Answer: A,B,C
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Updated: May 28, 2022
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