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Oracle 1z0-062 Exam Questions


Vendor Name: Oracle
Certification Name:Database
Exam Name:Oracle Database 12c: Installation and Administration

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1z0-062 Exam Sample Questions:



Which component resides in the System Global Area (SGA) of a database instance only in
shared server connections?

 

User Global Area

 

Programs Global Area

 

SQL Query Result Cache

 

PL/SQL Function Result Cache


User Global Area





Which statement is true about the loss of a data file belonging to the default undo
tablespace?

 

The database remains open in read-only mode.

 

The database is put inMOUNTstate and requires recovery to be opened.

 

The database remains open for querying but no DML statements can be executed
except by the users withSYSDBAprivilege.

 

All the noncommitted transactions are lost.

 

The database instance aborts.


The database is put inMOUNTstate and requires recovery to be opened.





Automatic Shared Memory Management is enabled for your database instance. You notice
that there are SQL statements performing poorly because of repeated parsing activity.
Which action generates recommendations to overcome the performance issues?

 

running the Memory Advisor for the buffer cache

 

running the Memory Advisor for the library cache

 

running the Memory Advisor for the SGA

 

running the Memory Advisor for the PGA


running the Memory Advisor for the library cache





You create a locally managed tablespace ORDERS_TBS with automatic segmentmanagement.
You then create the table DAILY_ORDS_LST in the ORDERS_TBS tablespace using the
command.
CREATE TABLE daily_ords_1st(ordno NUMBER, ord_date DATE) PCTFREE 20;
How does the PCTFREE storage parameter influence data storage for this table?

 

It allows only 80% of space to be occupied in all data blocks of this table.

 

It minimizes row chaining during row insertion.

 

It minimizes row migration during existing row data updation.

 

It automatically coalesces free space of a data blockwhen it reaches 20% of available
space.


It allows only 80% of space to be occupied in all data blocks of this table.





Your database instance has the following parameter setting:
OS_AUTHENT_PREFIX = OPS$


And then grant OPS$GUEST_USER the CREATE SESSION privilege.
Which two statements are true?

 

GUEST_USERcan query the tables created in theUSERStablespace by default.

 

The authentication details forGUEST_USERare stored in the database password file.

 

A localGUEST_USEROS account should exist beforeGUEST_USERcan log on to the
database.

 

GUEST_USERcan log on to the database without specifying a username and
password.

 

GUEST_USERis forced to change the password at the first login.


GUEST_USERcan query the tables created in theUSERStablespace by default.


GUEST_USERcan log on to the database without specifying a username and
password.



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