Online Access Free 1Z0-054 Exam Questions

The users in your online transaction processing (OLTP) environment complain that the query response time has increased considerably. On investigation, you find that the Program Global Area (PGA) is undersized and using temporary segments for sort operations. You plan to increase the size of the PGA and there is ample amount of memory available to you. You used the PGA advisor to check the correct size for PGA. View the Exhibit and examine the content of the PGA advisor. What size of PGA would give the maximum benefit?

• A.8024 MB
• B.3009 MB
• C.1003 MB
• D.1404 MB
• E.125 MB
• F.1204 MB

View the Exhibit and analyze the content of V$BUFFER_POOL_STATISTICS.

Why does the query on the EMP table not access buffers from the keep pool?

• A.because the query used SCOTT.EMP instead of EMP
• B.because the query with * always uses the default pool
• C.because the query with * always forces physical I/Os that bypass the keep pool
• D.because the blocks of the EMP table are already available in one of the other buffer pools

The Service-Level Agreement for the production database includes a clause that the database down time should not be more than 15 minutes.Which two details would you examine in the alert log to diagnose whether your database meets this requirement? (Choose two.)

• A.log switch frequency
• B.data file recovery time
• C.deadlock and timeout errors
• D.the FAST_START_MTTR_TARGET parameter setting
• E.instance recovery time

As part of a proactive tuning activity, you have the Automatic Workload Repository (AWR) and ADDM enabled for your database with the default setting of snapshot retention as 8 days and snapshot interval as 60 minutes.Which performance issue does NOT appear in the ADDM and needs alternative tools for investigation?

• A.application-level block contention
• B.performance issues related to the Resource Manager
• C.suboptimal parameter settings
• D.short-lived or intermittent performance issues lasting for less than 5 minutes

You queried V$SYSTEM_EVENT in your online transaction processing (OLTP) environment to check the following wait events:
Average Event Total Seconds Total Wait Name Waits Waiting Timeouts (in secs)
direct path read temp 18,274 11,312 16,282 .619 direct path write temp 3,251 416 25 .127 Which step would be appropriate to improve the performance?

• A.Increase the number of I/O slaves.
• B.Increase the number of database writer (DBWn) processes.
• C.Increase the size of the Database Buffer Cache.
• D.Increase the size of the Program Global Area (PGA).