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Examine the parameters set for your database instance:
You upgrade your database to Oracle Database 12c. The database supports a mixed workload and works with different workloads at different times. You notice in an ADDM report that the shared pool is inadequately sized. You resize the shared pool by decreasing the sizes of other pools, which results in inadequate sizes for other pools. You want to automate the sizing of SGA components.
Which two actions should you perform? (Choose two.)
A. Set the SGA_TARGET parameter equal to SGA_MAX_SIZE.
B. Set the SGA_TARGET parameter to the sum of DB_CACHE_SIZE,SHARED_POOL, and LARGE_POOL_SIZE.
C. Set the MEMORY_MAX_TARGET parameter to the sum of DB_CACHE_SIZE,SHARED_POOL, and LARGE_POOL_SIZE.
D. Set DB_CACHE_SIZE,SHARED_POOL, and LARGE_POOL_SIZE to their minimum required values.
E. Set the PGA_AGGREGATE_TARGET parameter to 0 and the SGA_TARGET parameter to 1.5G.
Answer: A, E
Which two statements are true about DB time in V$SYS_TIME_MODEL? (Choose two.)
A. DB time cannot exceed the total elapsed time (walk clock time) since the database instance started.
B. DB time cannot exceed the maximum number of concurrent sessions multiplied by the actual elapsed time for each session.
C. DB time includes the time spent on client processes and background processes.
D. Reducing DB time allows a database instance to support more user requests by using the same resources.
E. DB time is always greater than or equal to the DB CPU time.
Answer: D, E
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In your database, the measured 99th percentile value is used as the maximum value. You set a warning threshold level of 110% of maximum trigger as an alert.
What is the outcome? (Choose the best answer.)
A. It generates an error because the warning threshold cannot exceed 100%.
B. It generates an error because the percentage of maximum threshold cannot be set with a significance-level threshold value.
C. It generates an alert when an observed metric is 99% of the 99th percentile value as measured over the moving window baseline.
D. It generates an alert when an observed metric is 110% of the 99th percentile value as measured over the moving window baseline.
E. It generates an alert when 1 in 100 observations for an observed metric exceeds the 99th percentile value as measured over the fixed baseline.
You want to capture AWR data to monitor performance variation every Monday between 9:00 AM and 12:00 PM for three months and automatically remove the older AWR data every fortnight.
How would you achieve this? (Choose the best answer.)
A. Create AWR baselines.
B. Create SQL plan baselines.
C. Create repeating baseline templates.
D. Create database services and make sure that user connections use them to connect to the database instance.
E. Create a single baseline template.
Which two actions can reduce library cache latch contention for an OLTP application that repeatedly executes queries containing a mix of literals and bind variables? (Choose two.)
A. setting the OPEN_CURSORS parameter to hold a sufficient number of concurrently open cursors
B. coding the application such that a frequently executed statement is parsed only once and executed repeatedly as required
C. setting the CURSOR_SHARING parameter to EXACT
D. avoiding the granting of privileges on objects associated with cursors during peak load
E. enabling Automatic Memory Management and allocating at least 50% of the available memory for SHARED_POOL_SIZE
F. configuring shared server connections
Answer: B, E
You are administering a database that supports multiple applications, which make dedicated connections to the database instance by using different services.
You execute the command to enable tracing of the ORCL1 service:
Which two statements are true? (Choose two.)
A. A single trace file is generated for all sessions mapped to the ORCL1 service.
B. SQL trace is enabled for all modules and actions for sessions mapped to the ORCL1 service.
C. An SQL trace file is generated for each session that maps to the ORCL1 service.
D. An SQL trace file is generated for each of the modules using the ORCL1 service.
E. SQL trace is not enabled for the service because a module name is not specified.
Answer: A, C