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Upgrade to Oracle Database 12c Certification Exam

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May 20, 2024Last update

Oracle 1z0-060 Free Practice Questions

Q1. Which three statements are true concerning unplugging a pluggable database (PDB)?

A. The PDB must be open in read only mode.

B. The PDB must be dosed. 

C. The unplugged PDB becomes a non-CDB. 

D. The unplugged PDB can be plugged into the same multitenant container database (CDB)

E. The unplugged PDB can be plugged into another CDB. 

F. The PDB data files are automatically removed from disk.

Answer: ADE

Q2. Examine the following steps of privilege analysis for checking and revoking excessive, unused privileges granted to users:

1.Create a policy to capture the privilege used by a user for privilege analysis.

2.Generate a report with the data captured for a specified privilege capture.

3.Start analyzing the data captured by the policy.

4.Revoke the unused privileges.

5.Compare the used and unused privileges’ lists.

6.Stop analyzing the data. 

Identify the correct sequence of steps.

A. 1, 3, 5, 6, 2, 4

B. 1, 3, 6, 2, 5, 4

C. 1, 3, 2, 5, 6, 4

D. 1, 3, 2, 5, 6, 4

E. 1, 3, 5, 2, 6, 4

Answer: B

Q3. Your multitenant container (CDB) containing three pluggable databases (PDBs) is running in ARCHIVELOG mode. You find that the SYSAUX tablespace is corrupted in the root container.

The steps to recover the tablespace are as follows:

1.Mount the CDB. 

2.Close all the PDBs.

3.Open the database.

4.Apply the archive redo logs.

5.Restore the data file.

6.Take the SYSAUX tablespace offline.

7.Place the SYSAUX tablespace online.

8.Open all the PDBs with RESETLOGS.

9.Open the database with RESETLOGS.

10.Execute the command SHUTDOWN ABORT.

Which option identifies the correct sequence to recover the SYSAUX tablespace?

A. 6, 5, 4, 7

B. 10, 1, 2, 5, 8

C. 10, 1, 2, 5, 4, 9, 8

D. 10, 1, 5, 8, 10

Answer: A

Q4. In your database, you want to ensure that idle sessions that are blocking active are automatically terminated after a specified period of time.

How would you accomplish this?

A. Setting a metric threshold

B. Implementing Database Resource Manager

C. Enabling resumable timeout for user sessions

D. Decreasing the value of the IDLE_TIME resource limit in the default profile

Answer: D

Q5. Identify three valid methods of opening, pluggable databases (PDBs).

A. ALTER PLUGGABLE DATABASE OPEN ALL ISSUED from the root

B. ALTER PLUGGABLE DATABASE OPEN ALL ISSUED from a PDB

C. ALTER PLUGGABLE DATABASE PDB OPEN issued from the seed

D. ALTER DATABASE PDB OPEN issued from the root

E. ALTER DATABASE OPEN issued from that PDB

F. ALTER PLUGGABLE DATABASE PDB OPEN issued from another PDB

G. ALTER PLUGGABLE DATABASE OPEN issued from that PDB

Answer: AEG

Q6. Examine this command:

SQL > exec DBMS_STATS.SET_TABLE_PREFS (‘SH’, ‘CUSTOMERS’, ‘PUBLISH’,

‘false’);

Which three statements are true about the effect of this command?

A. Statistics collection is not done for the CUSTOMERS table when schema stats are gathered. 

B. Statistics collection is not done for the CUSTOMERS table when database stats are gathered. 

C. Any existing statistics for the CUSTOMERS table are still available to the optimizer at parse time.

D. Statistics gathered on the CUSTOMERS table when schema stats are gathered are stored as pending statistics.

E. Statistics gathered on the CUSTOMERS table when database stats are gathered are stored as pending statistics.

Answer: CDE

Q7. What is the effect of specifying the "ENABLE PLUGGABLE DATABASE" clause in a "CREATE DATABASE” statement?

A. It will create a multitenant container database (CDB) with only the root opened. 

B. It will create a CDB with root opened and seed read only.

C. It will create a CDB with root and seed opened and one PDB mounted. 

D. It will create a CDB that must be plugged into an existing CDB. 

E. It will create a CDB with root opened and seed mounted. 

Answer: B

Q8. Examine the parameter for your database instance:

You generated the execution plan for the following query in the plan table and noticed that the nested loop join was done. After actual execution of the query, you notice that the hash join was done in the execution plan:

Identify the reason why the optimizer chose different execution plans.

A. The optimizer used a dynamic plan for the query.

B. The optimizer chose different plans because automatic dynamic sampling was enabled. 

C. The optimizer used re-optimization cardinality feedback for the query.

D. The optimizer chose different plan because extended statistics were created for the columns used. 

Answer: B

Q9. You upgraded your database from pre-12c to a multitenant container database (CDB) containing pluggable databases (PDBs).

Examine the query and its output:

Which two tasks must you perform to add users with SYSBACKUP, SYSDG, and SYSKM privilege to the password file?

A. Assign the appropriate operating system groups to SYSBACKUP, SYSDG, SYSKM.

B. Grant SYSBACKUP, SYSDG, and SYSKM privileges to the intended users.

C. Re-create the password file with SYSBACKUP, SYSDG, and SYSKM privilege and the FORCE argument set to No.

D. Re-create the password file with SYSBACKUP, SYSDG, and SYSKM privilege, and FORCE arguments set to Yes.

E. Re-create the password file in the Oracle Database 12c format.

Answer: BD

Q10. Examine the following query output:

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

$ > impdp hr/hr directory = dumpdir dumpfile = hr_new.dmp schemas=hr 

TRANSFORM=DISABLE_ARCHIVE_LOGGING: Y

Which statement is true?

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

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

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

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

Answer: C

Q11. You performed an incremental level 0 backup of a database: 

RMAN > BACKUP INCREMENTAL LEVEL 0 DATABASE;

To enable block change tracking after the incremental level 0 backup, you issued this command:

SQL > ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE

‘ /mydir/rman_change_track.f’;

To perform an incremental level 1 cumulative backup, you issued this command: RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE;

Which three statements are true?

A. Backup change tracking will sometimes reduce I/O performed during cumulative incremental backups.

B. The change tracking file must always be backed up when you perform a full database backup.

C. Block change tracking will always reduce I/O performed during cumulative incremental backups.

D. More than one database block may be read by an incremental backup for a change made to a single block.

E. The incremental level 1 backup that immediately follows the enabling of block change tracking will not read the change tracking file to discover changed blocks.

Answer: ADE

Q12. In your Database, the TBS PERCENT USED parameter is set to 60 and the TBS PERCENT FREE parameter is set to 20.

Which two storage-tiering actions might be automated when using information Lifecycle Management (ILM) to automate data movement?

A. The movement of all segments to a target tablespace with a higher degree of compression, on a different storage tier, when the source tablespace exceeds TBS PERCENT USED

B. Setting the target tablespace to read-only

C. The movement of some segments to a target tablespace with a higher degree of compression, on a different storage tier, when the source tablespace exceeds TBS PERCENT USED

D. Setting the target tablespace offline

E. The movement of some blocks to a target tablespace with a lower degree of compression, on a different storage tier, when the source tablespace exceeds TBS PERCENT USED

Answer: BC

Q13. Which three statements are true concerning the multitenant architecture?

A. Each pluggable database (PDB) has its own set of background processes.

B. A PDB can have a private temp tablespace.

C. PDBs can share the sysaux tablespace.

D. Log switches occur only at the multitenant container database (CDB) level.

E. Different PDBs can have different default block sizes.

F. PDBs share a common system tablespace.

G. Instance recovery is always performed at the CDB level.

Answer: BDG

Q14. What are three purposes of the RMAN “FROM” clause?

A. to support PUSH-based active database duplication

B. to support synchronization of a standby database with the primary database in a Data environment

C. To support PULL-based active database duplication

D. To support file restores over the network in a Data Guard environment

E. To support file recovery over the network in a Data Guard environment

Answer: BDE 

Q15. In your multitenant container database (CDB) containing pluggable database (PDBs), you granted the CREATE TABLE privilege to the common user C # # A_ADMIN in root and all PDBs. You execute the following command from the root container:

SQL > REVOKE create table FROM C # # A_ADMIN; 

What is the result?

A. It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root only.

B. It fails and reports an error because the CONTAINER=ALL clause is not used. 

C. It excludes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root and all PDBs.

D. It fails and reports an error because the CONTAINER=CURRENT clause is not used. 

E. It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in all PDBs.

Answer: A

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