Free Access Oracle.1z0-062.v2022-06-21.q305 Practice Test (Page 23)

Question 106

You plan to upgrade your Oracle Database 9i to Oracle Database 12c.
Which two methods can you use? (Choose two.)

A.Perform a direct upgrade by running the Database Upgrade Assistant (DBUA).

B.Perform a direct upgrade by manually running thecatctl.plandcatupgrd.sqlscripts before issuing theSTARTUPUPGRADEcommand.

C.Perform a rolling upgrade.

D.Upgrade your current database to Oracle Database release 10.2.0.5, and then upgrade to Oracle Database 12c.

E.Install the Oracle Database 12c software, create a new Oracle 12c database, and then use the Oracle Data Pump to import data from the source Oracle 9i database to the target
Oracle 12c database.

Question 107

Examine the details of the uncompressed, non-partitioned heap table CITIES.

Examine the command:
SQL> ALTER TABLE cities SHRINK SPACE COMPACT;
What must you do before executing it?

A.Disable all indexes on the table.

B.Enable row movement is enabled.

C.Ensure there are no pending transactions on the table.

D.Ensure free space that is approximately equal to the space used by the table should be available.

Question 108

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

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

B.The database remains open in read-only mode.

C.The database instance aborts.

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

E.All the noncommitted transactions are lost.

Question 109

Which statement is true about the Oracle central inventory directory (oraInventory)?

A.oraInventorymust not be shared by all Oracle software installations on a single system.

B.If ORACLE_BASEis set to /u01/app/oraclefor the oracle user during an installation, OUI creates the Oracle Inventory directory in the /u01/app/oracle/ oraInventorypath.

C.lf an OFA-compliant path is not created and the ORACLE_BASEenvironment variable is not set during an Oracle Database installation, the Oracle Inventory directory is placed in the home directory of the user that is performing the installation.

D.Oracle software owners must be members of the same central oraInventorygroup, but they need not have this group as their primary group.

Question 110

The HR.DEPARTMENTS table is the parent of the HR.EMPLOYEES table. The EMPLOYEES.DEPARTMENT_ID column has a foreign key constraint with the ON DELETE CASCADEoption that refers to the DEPARTMENTS.DEPARTMENT_ID column. An index exists on the DEPARTMENTS.DEPARTMENT_ID column.
A transaction deletes a primary key in the DEPARTMENTStable, which has child rows in the EMPLOYEEStable.
Which statement is true?

A.The transaction acquires a table lock only on the DEPARTMENTStable until the transaction is complete.

B.Only the rows that are deleted in the DEPARTMENTSand EMPLOYEEStables are locked until the transaction on the DEPARTMENTStable is complete.

C.The transaction acquires a table lock on the EMPLOYEES table. This lock enables other sessions to query but not update the EMPLOYEEStable until the transaction on the DEPARTMENTS table is complete.

D.The transaction acquires a table lock on the DEPARTMENTS table. This lock enables other sessions to query but not update the DEPARTMENTStable until the transaction on the DEPARTMENTS table is complete.

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