Oracle 1z0-054 Exam Actual Questions

After running SQL Performance Analyzer (SPA), you observe a few regressed SQL statements in the SPA output. Identify the two actions that you would suggest for these regressed SQL statements. (Choose two.)

Correct Answer: BC 🗳️

View the Exhibit exhibit1 to examine the series of SQL commands and parameter settings.

View the Exhibit exhibit2 to examine the plans available in the SQL plan baseline.

The first plan (in red) is created when OPTIMIZER_MODE is set to ALL_ROWS and the second plan (in blue) is created when OPTIMIZER_MODE is set to
FIRST_ROWS.Which SQL plan baseline would be used if the SQL query in exhibit1 is executed again when the value of OPTIMIZER_MODE is set to
FIRST_ROWS?

Correct Answer: B 🗳️

You work as a DBA for a company and you have the responsibility of managing one of its online transaction processing (OLTP) systems. The database encountered performance-related problems and you generated an Automatic Workload Repository (AWR) report to investigate it further. View the Exhibits and examine the AWR report.




What could be the problem in this database?

Correct Answer: C 🗳️

You are working on an online transaction processing (OLTP) system. You detected free buffer waits events for your database instance running in a machine that has multiple CPUs. You increased the database buffer cache size as the first step. After a few hours of work on the database, further investigation shows that the same event is being recorded. What would be your next step to avoid this event in future?

Correct Answer: C 🗳️