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Exam2pass > Oracle > Oracle Certifications > 1Z0-060 > 1Z0-060 Online Practice Questions and Answers

1Z0-060 Online Practice Questions and Answers

Questions 4

Which statement is true about Oracle Net Listener?

A. It acts as the listening endpoint for the Oracle database instance for all local and non-local user connections.

B. A single listener can service only one database instance and multiple remote client connections.

C. Service registration with the listener is performed by the listener registration process (LREG) process of each database instance.

D. The listener.ora configuration file must be configured with one or more listening protocol addresses to allow remote users to connect to a database instance.

E. The listener.ora configuration file must be located in the ORACLE_HOME/network/admin directory.

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Correct Answer: C

Questions 5

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.

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Correct Answer: C

Note from Oracle Documentation: With redo logging disabled, the disk space required for redo logs during an Oracle Data Pump import will be smaller. However, to ensure recovery from media failure, the DBA should do an RMAN backup after the import completes. Even with this parameter specified, there is still redo logging for other operations of Oracle Data Pump. This includes all CREATE and ALTER statements, except CREATE INDEX, and all operations against the master table used by Oracle Data Pump during the import.

Questions 6

To enable the Database Smart Flash Cache, you configure the following parameters:

DB_FLASH_CACHE_FILE = `/dev/flash_device_1' , `/dev/flash_device_2' DB_FLASH_CACHE_SIZE=64G

What is the result when you start up the database instance?

A. It results in an error because these parameter settings are invalid.

B. One 64G flash cache file will be used.

C. Two 64G flash cache files will be used.

D. Two 32G flash cache files will be used.

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Correct Answer: A

Questions 7

Examine the parameters for your database instance:

Which three statements are true about the process of automatic optimization by using cardinality feedback?

A. The optimizer automatically changes a plan during subsequent execution of a SQL statement if there is a huge difference in optimizer estimates and execution statistics.

B. The optimizer can re optimize a query only once using cardinality feedback.

C. The optimizer enables monitoring for cardinality feedback after the first execution of a query.

D. The optimizer does not monitor cardinality feedback if dynamic sampling and multicolumn statistics are enabled.

E. After the optimizer identifies a query as a re-optimization candidate, statistics collected by the collectors are submitted to the optimizer.

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Correct Answer: ACD

C: During the first execution of a SQL statement, an execution plan is generated as usual.

D: if multi-column statistics are not present for the relevant combination of columns, the optimizer can fall back on cardinality feedback.

(not B)* Cardinality feedback. This feature, enabled by default in 11.2, is intended to improve plans for repeated executions.

optimizer_dynamic_sampling optimizer_features_enable

*

dynamic sampling or multi-column statistics allow the optimizer to more accurately estimate selectivity of conjunctive predicates.

Note:

*

OPTIMIZER_DYNAMIC_SAMPLING controls the level of dynamic sampling performed by the optimizer.

Range of values. 0 to 10

*

Cardinality feedback was introduced in Oracle Database 11gR2. The purpose of this feature is to automatically improve plans for queries that are executed repeatedly, for which the optimizer does not estimate cardinalities in the plan properly. The optimizer may misestimate cardinalities for a variety of reasons, such as missing or inaccurate statistics, or complex predicates. Whatever the reason for the misestimate, cardinality feedback may be able to help.

Questions 8

You have altered a non-unique index to be invisible to determine if queries execute within an acceptable response time without using this index.

Which two are possible if table updates are performed which affect the invisible index columns? (Choose two.)

A. The index remains invisible.

B. The index is not updated by the DML statements on the indexed table.

C. The index automatically becomes visible in order to have it updated by DML on the table.

D. The index becomes unusable but the table is updated by the DML.

E. The index is updated by the DML on the table.

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Correct Answer: AE

Unlike unusable indexes, an invisible index is maintained during DML statements.

Note:

* Oracle 11g allows indexes to be marked as invisible. Invisible indexes are maintained like any other index, but they are ignored by the optimizer unless the OPTIMIZER_USE_INVISIBLE_INDEXES parameter is set to TRUE at the instance or session level. Indexes can be created as invisible by using the INVISIBLE keyword, and their visibility can be toggled using the ALTER INDEX command.

Questions 9

In which two scenarios do you use SQL* Loader to load data?

A. Transform the data while it is being loaded into the database.

B. Use transparent parallel processing without having to split the external data first.

C. Load data into multiple tables during the same load statement.

D. Generate unique sequential key values in specified columns.

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Correct Answer: CD

http://docs.oracle.com/cd/B28359_01/server.111/b28319/ldr_concepts.htm

Questions 10

Oracle Data Redaction is active on the SCOTT.EMP table.

You queried the table twice.

SQL> SELECT ENAME, SAL, COMM, MGR, HIREDATE FROM EMP WHERE DEPTNO=30;

SQL> SELECT ENAME, SAL, COMM, MGR, HIREDATE FROM EMP WHERE DEPTNO=30;

Which is guaranteed to be true concerning the redaction policy?

A. FULL redaction is active on the SAL column

B. RANDOM redaction is active on the MGR column

C. RANDOM redaction is active on the HIREDATE column

D. PARTIAL redaction is active on the MGR column.

E. PARTIAL redaction is active of the HIREDATE column.

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Correct Answer: A

Questions 11

Your multitenant container database (CDB) contains some pluggable databases (PDBs), you execute the following commands to create a common user and grant connect privileges: Which statement is true about the common user created by the command?

A. The user cannot connect any database because the CONTAINER clause is missing.

B. The user can connect only to the root database.

C. The user can connect to the root and all PDBs.

D. The user cannot connect to any database because the CREATE ANY SESSION privilege must be granted.

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Correct Answer: C

Questions 12

Your database uses Automatic Memory Management, and has the large pool configured.

You issue the following command:

SQL> ALTER SYSTEM SET SHARED_SERVERS = 5;

Which statement is true about the shared server configuration?

A. It is enabled only if the SHARED_SERVER_SESSIONS parameter is configured.

B. It is enabled and the UGA is located in the large pool for connections that use the shared server configuration.

C. It is enabled only if at least five dispatchers are configured.

D. It is enabled and all the DBA and non-DBA sessions function in shared server mode.

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Correct Answer: A

Reference: https://docs.oracle.com/cd/E71588_01/HTMIG/configuring-SHARED-SERVERSparameter.htm#HTMIG29492

Questions 13

Your multitenant container database (CDB) contains several pluggable databases (PDBs).

A common user C##A_ADMIN, is created with connect privileges.

You execute this command from the root container:

SQL> GRANT create tablespace to C##A_ADMIN;

Which statement is true?

A. The command executes successfully, enabling the C##A_ADMIN user to create a tablespace only in the root container.

B. The command fails because the CONTAINER=ALL clause is not used.

C. The command executes successfully, enabling the C##A_ADMIN user to create tablespaces in the root container as well as in the PDBs.

D. The command fails because the CONTAINER=CURRENT clause is not used.

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Correct Answer: C

Exam Code: 1Z0-060
Exam Name: Upgrade to Oracle Database 12c
Last Update: Jun 11, 2025
Questions: 217

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