Online Access Free Oracle.1z1-084.v2025-10-01.q33 Practice Test (Page 8)

Home
Oracle
1z1-084
Oracle.1z1-084.v2025-10-01.q33 Practice Test (Page 8)

1z1-084 Exam Question 31

Which two types of performance problems are reported by ADDM for PDBS?

A.I/O capacity limits

B.Excessive checkpoint writes

C.SGA sizing issues

D.Top SQL statements

E.User I/O waits

Correct Answer: A,E

The Automatic Database Diagnostic Monitor (ADDM) analyzes and reports on various types of performance problems. For Pluggable Databases (PDBs), it can identify issues such as I/O capacity limits which may hinder the overall performance by causing bottlenecks. Additionally, ADDM can report on user I/O waits, which can indicate performance issues related to the time it takes for user queries to read data from the disk.
References:
* Oracle Multitenant Administrator's Guide, 19c
* Oracle Database Performance Tuning Guide, 19c

Comment: *

Name: *

Email: *

Verification: *

1z1-084 Exam Question 32

Examine this statement and output:

Which two situations can trigger this error?

A.The user lacks the required privileges to execute the DBMS WORKLOAD CAPTURE package or the directory.

B.There is a file in the capture directory.

C.The syntax is incomplete.

D.The capture directory is part of the root file system.

E.The instance is unable to access the capture directory.

Correct Answer: A,E

The ORA-15505 error indicates that the instance encountered errors while trying to access the specified directory. This could be due to:
A: Insufficient privileges: The user attempting to start the workload capture might not have the required permissions to execute the DBMS_WORKLOAD_CAPTURE package or to read/write to the directory specified.
E: Accessibility: The database instance may not be able to access the directory due to issues such as incorrect directory path, directory does not exist, permission issues at the OS level, or the directory being on a file system that's not accessible to the database instance.
References:
* Oracle Database Error Messages, 19c
* Oracle Database Administrator's Guide, 19c

Comment: *

Name: *

Email: *

Verification: *

1z1-084 Exam Question 33

A database supporting a mixed workload is hosted on a server with 64 CPUs.
A large number of free buffer waits and buffer busy waits occur affecting performance.
The buffer cache size was then increased but after a few hours, the same wait events occur more often than before the change.
Examine these parameter settings:

Which two actions can help reduce the number of these waits7

A.increasing the value of DB_FILE_MULTIBLOCK_READ_COUNT to 128

B.Increasing the size of MEMORYTARGET

C.setting dbwr_io_slaves to 64

D.increasing the value of DBWRITERPROCESSES to 64,

E.reducing the values of DB_FILE_MULTILOCK_READ_COUNT to 64

Correct Answer: C,D

Given a server with 64 CPUs, if the buffer cache size increase did not alleviate free buffer waits and buffer busy waits, one can look into optimizing I/O and the efficiency of the DB writer processes.
C: Setting theDBWR_IO_SLAVESparameter to a non-zero value, such as the number of CPUs, would initiate I/O slave processes to assist the DB writer process. This can help reduce I/O contention when writing from the buffer cache to disk, particularly for systems without asynchronous I/O capabilities.
D: Increasing the value ofDBWRITERPROCESSESenables multiple DB writer processes to be active simultaneously. In a system with many CPUs, such as 64, increasing this value can improve the write throughput to disk and potentially reduce buffer busy waits.
References:
* Oracle Database Reference, 19c
* Oracle Database Performance Tuning Guide, 19c

Comment: *

Name: *

Email: *

Verification: *

Other Version: 266Oracle.1z1-084.v2024-07-02.q20

Latest Upload: 132Microsoft.AZ-305.v2026-01-01.q141; 130Microsoft.SC-300.v2026-01-01.q162; 119Juniper.JN0-253.v2025-12-31.q36; 142Microsoft.PL-200.v2025-12-31.q137; 139Salesforce.Marketing-Cloud-Developer.v2025-12-31.q96; 118Fortinet.NSE7_OTS-7.2.v2025-12-31.q30; 141Microsoft.DP-700.v2025-12-30.q51; 135Oracle.1z0-1077-25.v2025-12-30.q69; 164HP.HPE7-A08.v2025-12-30.q137; 128Adobe.AD0-E607.v2025-12-29.q27

[×]

Download PDF File

Enter your email address to download Oracle.1z1-084.v2025-10-01.q33 Practice Test

Email: