[Free] 2019(Nov) EnsurePass Oracle 1z0-062 Dumps with VCE and PDF 1-10

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Question No.1

A user establishes a connection to a database instance by using an Oracle Net connection. You want to ensure the following:

  1. The user account must be locked after five unsuccessful login attempts.

  2. Data read per session must be limited for the user.

  3. The user cannot have more than three simultaneous sessions.

  4. The user must have a maximum of 10 minutes session idle time before being logged off automatically.

How would you accomplish this?

  1. by granting a secure application role to the user

  2. by implementing Database Resource Manager

  3. by using Oracle Label Security options

  4. by assigning a profile to the user

Correct Answer: D

Question No.2

The ORCL database is configured to support shared server mode. You want to ensure that a user connecting remotely to the database instance has a one-to-one ratio between client and server processes. Which connection method guarantees that this requirement is met?

  1. connecting by using an external naming method

  2. connecting by using the easy connect method

  3. creating a service in the database by using the DBMS_SERVICE.CREATE_SERVICE procedure and using this service for creating a local naming service

  4. connecting by using the local naming method with the SERVER = DEDICATED parameter set in the tnsnames.ora file for the net service

  5. connecting by using a directory naming method

Correct Answer: D

Question No.3

You wish to enable an audit policy for all database users, except SYS, SYSTEM, and SCOTT. You issue the following statements:

SQLgt; AUDIT POLICY ORA_DATABASE_PARAMETER EXCEPT SYS; SQLgt; AUDIT POLICY ORA_DATABASE_PARAMETER EXCEPT SYSTEM; SQLgt; AUDIT POLICY ORA_DATABASE_PARAMETER EXCEPT SCOTT;

For which database users is the audit policy now active?

  1. All users except SYS

  2. All users except SCOTT

  3. All users except sys and SCOTT

  4. All users except sys, system, and SCOTT

Correct Answer: B

Explanation:

If you run multiple AUDIT statements on the same unified audit policy but specify different EXCEPT users, then Oracle Database uses the last exception user list, not any of the users from the preceding lists. This means the effect of the earlier AUDIT POLICY … EXCEPT statements are overridden by the latest AUDIT POLICY … EXCEPT statement.

Note:

The ORA_DATABASE_PARAMETER policy audits commonly used Oracle Database parameter settings. By default, this policy is not enabled.

You can use the keyword ALL to audit all actions. The following example shows how to audit all actions on the HR.EMPLOYEES table, except actions by user pmulligan.

Example Auditing All Actions on a Table

CREATE AUDIT POLICY all_actions_on_hr_emp_pol ACTIONS ALL ON HR.EMPLOYEES;

AUDIT POLICY all_actions_on_hr_emp_pol EXCEPT pmulligan;

Question No.4

You install a non-RAC Oracle Database. During Installation, the Oracle Universal Installer (OUI) prompts you to enter the path of the Inventory directory and also to specify an operating system group name. Which statement is true?

  1. The ORACLE_BASE base parameter is not set.

  2. The installation is being performed by the root user.

  3. The operating system group that is specified should have the root user as its member.

  4. The operating system group that is specified must have permission to write to the inventory directory.

Correct Answer: D

Explanation:

Providing a UNIX Group Name

If you are installing a product on a UNIX system, the Installer will also prompt you to provide the name of the group which should own the base directory. You must choose a UNIX group name which will have permissions to update, install, and deinstall Oracle software. Members of this group must have write permissions to the base directory chosen.

Only users who belong to this group are able to install or deinstall software on this machine.

Question No.5

You administer an online transaction processing (OLTP) system whose database is stored in Automatic Storage Management (ASM) and whose disk group use normal redundancy.

One of the ASM disks goes offline, and is then dropped because it was not brought online before DISK_REPAIR_TIME elapsed.

When the disk is replaced and added back to the disk group, the ensuing rebalance operation is too slow.

Which two recommendations should you make to speed up the rebalance operation if this type of failure happens again? (Choose two.)

  1. Increase the value of the ASM_POWER_LIMIT parameter.

  2. Set the DISK_REPAIR_TIME disk attribute to a lower value.

  3. Specify the statement that adds the disk back to the disk group.

  4. Increase the number of ASMB processes.

  5. Increase the number of DBWR_IO_SLAVES in the ASM instance.

    Correct Answer: AD

    Explanation:

    A: ASM_POWER_LIMIT specifies the maximum power on an Automatic Storage Management instance for disk rebalancing. The higher the limit, the faster rebalancing will complete. Lower values will take longer, but consume fewer processing and I/O resources.

    D: Normally a separate process is fired up to do that rebalance. This will take a certain amount of time. If you want it to happen faster, fire up more processes. You tell ASM it can add more processes by increasing the rebalance power.

    ASMB

    ASM Background Process

    Communicates with the ASM instance, managing storage and providing statistics Incorrect:

    Not B: A higher, not a lower, value of DISK_REPAIR_TIME would be helpful here.

    Not E: If you implement database writer I/O slaves by setting the DBWR_IO_SLAVES parameter, you configure a single (master) DBWR process that has slave processes that are subservient to it. In addition, I/O slaves can be used to quot;simulatequot; asynchronous I/O on platforms that do not support asynchronous I/O or implement it inefficiently. Database I/O slaves provide non-blocking, asynchronous requests to simulate asynchronous I/O.

    Question No.6

    The following parameter are set for your Oracle 12c database instance: OPTIMIZER_CAPTURE_SQL_PLAN_BASELINES=FALSE OPTIMIZER_USE_SQL_PLAN_BASELINES=TRUE

    You want to manage the SQL plan evolution task manually. Examine the following steps:

    1. Set the evolve task parameters.

    2. Create the evolve task by using the DBMS_SPM.CREATE_EVOLVE_TASK function.

    3. Implement the recommendations in the task by using the DBMS_SPM.IMPLEMENT_EVOLVE_TASK function.

    4. Execute the evolve task by using the DBMS_SPM.EXECUTE_EVOLVE_TASK function.

      A.

      2, 4, 5

      B.

      2, 1, 4, 3, 5

      C.

      1, 2, 3, 4, 5

      D.

      1, 2, 4, 5

    5. Report the task outcome by using the DBMS_SPM.REPORT_EVOLVE_TASK function. Identify the correct sequence of steps:

Correct Answer: B

Explanation:

Evolving SQL Plan Baselines

image

2. Create the evolve task by using the DBMS_SPM.CREATE_EVOLVE_TASK function. This function creates an advisor task to prepare the plan evolution of one or more plans for a specified SQL statement. The input parameters can be a SQL handle, plan name or a list of plan names, time limit, task name, and description.

1. Set the evolve task parameters. SET_EVOLVE_TASK_PARAMETER

This function updates the value of an evolve task parameter. In this release, the only valid parameter is TIME_LIMIT.

4. Execute the evolve task by using the DBMS_SPM.EXECUTE_EVOLVE_TASK function. This function executes an evolution task. The input parameters can be the task name, execution name, and execution description. If not specified, the advisor generates the name, which is returned by the function.

3. IMPLEMENT_EVOLVE_TASK

This function implements all recommendations for an evolve task. Essentially, this function is equivalent to using ACCEPT_SQL_PLAN_BASELINE for all recommended plans. Input parameters include task name, plan name, owner name, and execution name.

5. Report the task outcome by using the DBMS_SPM_EVOLVE_TASK function. This function displays the results of an evolve task as a CLOB. Input parameters include the task name and section of the report to include.

Question No.7

Which two statements are true? (Choose two.)

  1. A role cannot be assigned external authentication.

  2. A role can be granted to other roles.

  3. A role can contain both system and object privileges.

  4. The predefined resource role includes the unlimited_tablespace privilege.

  5. All roles are owned by the sys user.

  6. The predefined connect role is always automatically granted to all new users at the time of their creation.

Correct Answer: BC

Question No.8

Examine the following query output:

image

You issue the following command to import tables into the hr schema:

$ gt; impdp hr/hr directory = dumpdir dumpfile = hr_new.dmp schemas=hr TRANSFORM=DISABLE_ARCHIVE_LOGGING: Y

Which statement is true?

  1. All database operations performed by the impdp command are logged.

  2. Only CREATE INDEX and CREATE TABLE statements generated by the import are logged.

  3. Only CREATE TABLE and ALTER TABLE statements generated by the import are logged.

  4. None of the operations against the master table used by Oracle Data Pump to coordinate its activities are logged.

Correct Answer: C

Explanation:

Oracle Data Pump disable redo logging when loading data into tables and when creating indexes. The new TRANSFORM option introduced in data pumps import provides the flexibility to turn off the redo generation for the objects during the course of import. The Master Table is used to track the detailed progress information of a Data Pump job.

The Master Table is created in the schema of the current user running the Pump Dump export or import, and it keeps tracks of lots of detailed information.

Question No.9

Which two statements are true about the RMAN validate database command? (Choose two.)

  1. It checks the database for intrablock corruptions.

  2. It can detect corrupt pfiles.

  3. It can detect corrupt spfiles.

  4. It checks the database for interblock corruptions.

  5. It can detect corrupt block change tracking files.

Correct Answer: AC

Explanation:

Block corruptions can be divided Into Interblock corruption and intrablock corruption. In intrablock corruption. th芦 corruption occurs within the block itself and can be either physical or logical corruption. In interblock corruption, the corruption occurs between blocks and can only be logical corruption.

(key word) * The VALIDATE command checks for intrablock corruptions only. Only DBVERIFY and the ANALYZE statement detect Interblock corruption. VALIDATE Command Output 路路gt; List of Control File and SPFILE.

File TYPE gt;禄禄 SPFILE or Control File.

Status gt;禄禄 OK if no corruption, or FAILED If block corruption is found. Blocks Failing 禄禄禄 The number of blocks that fail the corruption check. These blocks are newly corrupt.

Blocks Examined 禄禄禄 Total number of blocks in the file. Oracle#39; Database Backup and Recovery User#39;s Guide

12c Release 1 (12.1) – 16 Validating Database Files and Backups

Question No.10

In a recent Automatic Workload Repository (AWR) report for your database, you notice a high number of buffer busy waits. The database consists of locally managed tablespaces with free list managed segments.

On further investigation, you find that buffer busy waits is caused by contention on data blocks. Which option would you consider first to decrease the wait event immediately?

  1. Decreasing PCTUSED

  2. Decreasing PCTFREE

  3. Increasing the number of DBWN process

  4. Using Automatic Segment Space Management (ASSM)

  5. Increasing db_buffer_cache based on the V$DB_CACHE_ADVICE recommendation

Correct Answer: D

Explanation:

Automatic segment space management (ASSM) is a simpler and more efficient way of managing space within a segment. It completely eliminates any need to specify and tune the pctused,freelists, and freelist groups storage parameters for schema objects created in the tablespace. If any of these attributes are specified, they are ignored.

Oracle introduced Automatic Segment Storage Management (ASSM) as a replacement for traditional freelists management which used one-way linked-lists to manage free blocks with tables and indexes. ASSM is commonly called quot;bitmap freelistsquot; because that is how Oracle implement the internal data structures for free block management.

Note:

Buffer busy waits are most commonly associated with segment header contention onside the data buffer pool (db_cache_size, etc.).

The most common remedies for high buffer busy waits include database writer (DBWR) contention tuning, adding freelists (or ASSM), and adding missing indexes.

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