Printable PDFOracle 1Z0-064 Exam Questions & Answers
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Vendor: Oracle
Exam Code: 1Z0-064
Exam Name: Oracle Database 12c: Performance Management and Tuning
Certification Provider: Oracle
Total Questions: 119 Q&A ( View Details)
Updated on: Mar 31, 2025
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1Z0-064 Online Practice Questions and Answers
Which two actions should you take to monitor the throughput generated by the modules of an application? (Choose two.)
A. Use the Resource Manager.
B. Enable SQL Trace at the session level.
C. Create a service.
D. Use a dedicated server configuration.
E. Use the DBMS_APPLICATION_INFO package to define the current module and action so that they appear in V$SESSION.
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.
Which three statements are true about the interpretation of an execution plan? (Choose three.)
A. The cost of the entire plan is indicated by the line with Id 0 and always includes both I/O and CPU resources.
B. The ROWS column indicates the cardinality of each operation and is always calculated by dividing the total number of rows in the table by the number of distinct values in the column used in the WHERE clause predicate.
C. A TABLE ACCESS FULL in the Operation column for a query with a WHERE clause occurs only if no index exists for the filter column.
D. An INDEX UNIQUE SCAN in the Operation column always implies that only one row will be returned.
E. A HASH JOIN in the Operation column always implies that two tables are joined by using an equijoin.
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