1z1-084 무료 덤프문제 온라인 액세스

Which three statements are true about tuning dimensions and details of v$sys_time_model and DB time?

• A.Systems in which CPU time is dominant need more tuning that those in which WAIT TIME is dominant.
• B.Statspack cannot account for high CPU time when CPU TIME is a Top 10 event in DB time. When CPU time is high, SQL tuning may improve performance.
• C.DB Time accounts for all time used by background processes and user sessions.
• D.The proportion of WAIT TIME to CPU TIME always increases with increased system load.
• E.Parse Time Elapsed accounts for successful soft and hard parse operations only.
• F.When WAIT TIME is high, instance tuning may improve performance.

Accessing the SALES tables causes excessive db file sequential read wait events.
Examine this AWR except:

Now, examine these attributes displayed by querying dba_tables:

Finally, examine these parameter settings:

Which two must both be used to reduce these excessive waits?

• A.Re-create the SALES table.
• B.Partition the SALES table.
• C.Compress the SALES table.
• D.Increase PCTFREE for the SALES table.
• E.Coalesce all sales table indexes.

You execute the following:
EXECUTE DBMS_AuTO_TASK_ADMIN.DISABLE;
Which advisor remains enabled?

• A.Automatic Segment Advisor
• B.SQL Plan Management Evolve Advisor
• C.Automatic SQL Tuning
• D.Automatic Optimizer Statistics Collection
• E.Optimizer Statistics Advisor

You want to reduce the amount of db file scattered read that is generated in the database. You execute the SQL Tuning Advisor against the relevant workload. Which two can be part of the expected result?

• A.recommendations regarding partitioning the tables
• B.recommendations regarding rewriting the SQL statements
• C.recommendations regarding the creation of SQL Patches
• D.recommendations regarding the creation of materialized views
• E.recommendations regarding the creation of additional indexes

You are informed that the RMAN session that is performing the database duplication is much slower than usual. You want to know the approximate time when the rman operation will be completed.
Which view has this information?

• A.V$RMAN_BACKUP_JOB_DETAILS
• B.V$SESSION_LONGOPS
• C.V$SESSTAT
• D.V$SESSION