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1z0-060 Questions and Answers

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1z0-060 Questions and Answers

Question # 6

You created an encrypted tablespace:

You then closed the encryption wallet because you were advised that this is secure.

Later in the day, you attempt to create the EMPLOYEES table in the SECURESPACE tablespace with the SALT option on the EMPLOYEE column.

Which is true about the result?

A.

It creates the table successfully but does not encrypt any inserted data in the EMPNAME column because the wallet must be opened to encrypt columns with SALT.

B.

It generates an error when creating the table because the wallet is closed.

C.

It creates the table successfully, and encrypts any inserted data in the EMPNAME column because the wallet needs to be open only for tablespace creation.

D.

It generates error when creating the table, because the salt option cannot be used with encrypted tablespaces.

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Question # 7

You enabled an audit policy by issuing the following statements:

SQL> AUDIT POLICY ORA_DATABASE_PARAMETER BY SCOTT;

SQL> AUDIT POLICY ORA_DATABASE_PARAMETER BY SYS, SYSTEM;

For which database users and for which executions is the audit policy now active? (Choose two.)

A.

SCOTT, SYS and SYSTEM

B.

SYS and SYSTEM, but not SCOTT

C.

SCOTT, but not SYS and SYSTEM

D.

Only for successful executions

E.

Only for failed executions

F.

Both successful and failed executions

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Question # 8

Which three statements are true about adaptive SQL plan management? (Choose three.)

A.

It adds new, better plans automatically as fixed plans to the baseline.

B.

The non-accepted plans are automatically accepted and become usable by the optimizer if they perform better than the existing accepted plans.

C.

It automatically performs verification or evolves non-accepted plans, in COMPREHENSIVE mode when they perform better than existing accepted plans.

D.

The non-accepted plans in a SQL plan baseline are automatically evolved, in COMPREHENSIVE mode, during the nightly maintenance window and a persistent verification report is generated.

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Question # 9

Examine the following command:

ALTER SYSTEM SET enable_ddl_logging=FALSE;

Which statement is true?

A.

None of the data definition language (DDL) statements are logged in the trace file.

B.

Only the DDL commands that resulted in errors are logged in the alert log file.

C.

A new log.xml file that contains the DDL statements is created, and the DDL command details are removed from the alert log file.

D.

Only the DDL commands that resulted in the creation of new database files are logged in a separate diagnostic directory.

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Question # 10

Which three statements are true about the use of the query result cache? (Choose three.)

A.

Results obtained from a query rewrite to a materialized view may be stored in the query result cache.

B.

Stale results may still be obtained from the query result cache, if the query session's query_rewrite_integrity parameter is set to stale_tolerated.

C.

Results obtained from a join between a table and a view may be stored in the query result cache.

D.

Results from distributed queries are never stored in the query result cache.

E.

Results may not be obtained from the query result cache, when the query_rewrite_enabled parameter is set to false.

F.

Results from remote queries may sometimes be stored in the query result cache.

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Question # 11

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? (Choose two.)

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

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Question # 12

A warehouse fact table in your Oracle 12c Database is range-partitioned by month and accessed frequently with queries that span multiple partitions.

The table has a local prefixed, range partitioned index.

Some of these queries access very few rows in some partitions and all the rows in other partitions, but these queries still perform a full scan for all accessed partitions.

This commonly occurs when the range of dates begins at the end of a month or ends close to the start of a month.

You want an execution plan to be generated that uses indexed access when only a few rows are accessed from a segment, while still allowing full scans for segments where many rows are returned.

Which three methods could transparently help to achieve this result? (Choose three.)

A.

Using a partial local index on the warehouse fact table month column with indexing disabled for the table partitions that return most of their rows to the queries.

B.

Using a partial local index on the warehouse fact table month column with indexing disabled for the table partitions that return a few rows to the queries.

C.

Using a partitioned view that does a UNION ALL query on the partitions of the warehouse fact table, which retains the existing local partitioned column.

D.

Converting the partitioned table to a partitioned view that does a UNION ALL query on the monthly tables, which retains the existing local partitioned column.

E.

Using a partial global index on the warehouse fact table month column with indexing disabling for the table partitions that return most of their rows to the queries.

F.

Using a partial global index on the warehouse fact table month column with indexing disabled for the table partitions that return a few rows to the queries.

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Question # 13

Which three are amongst the categories into which column definitions are classifies by the Database Migration Assistant for Unicode (DMU)? (Choose three.)

A.

alphanumeric columns that will have invalid binary representation after converting to the chosen Unicode character set

B.

alphanumeric columns that need conversion to a different binary representation before converging to the chosen Unicode character set

C.

date columns that will have invalid binary representation after converting to the chosen Unicode character set

D.

numeric columns that will have invalid binary representation after converting to the chosen Unicode character set

E.

numeric columns that will exceed the column size limit after converting to the chosen Unicode character set

F.

alphanumeric columns that need no conversion

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Question # 14

In which two scenarios do you use SQL* Loader to load data? (Choose two.)

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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Question # 15

Examine these two statements:

Which three are true about the MRKT tablespace? (Choose three.)

A.

The MRKT tablespace is created as a smallfile tablespace, because the file size is less than the minimum required for bigfile files.

B.

The MRKT tablespace may be dropped if it has no contents.

C.

Users who were using the old default tablespace will have their default tablespaces changed to the MRKT tablespace.

D.

No more data files can be added to the tablespace.

E.

The relative file number of the tablespace is not stored in rowids for the table rows that are stored in the MRKT tablespace.

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Question # 16

A new report process containing a complex query is written, with high impact on the database. You want to collect basic statistics about query, such as the level of parallelism, total database time, and the number of I/O requests.

For the database instance STATISTICS_LEVEL, the initialization parameter is set to TYPICAL and the CONTROL_MANAGEMENT_PACK_ACCESS parameter is set to DIAGNOSTIC+TUNING.

What should you do to accomplish this task?

A.

Execute the query and view Active Session History (ASH) for information about the query.

B.

Enable SQL trace for the query.

C.

Create a database operation, execute the query, and use the DBMS_SQL_MONITOR.REPORT_SQL_MONITOR function to view the report.

D.

Use the DBMS_APPLICATION_INFO.SET_SESSION_LONGOPS procedure to monitor query execution and view the information from the V$SESSION_LONGOPS view.

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Question # 17

Which three resources might be prioritized between competing pluggable databases when creating a multitenant container database plan (CDB plan) using Oracle Database Resource Manager? (Choose three.)

A.

Maximum Undo per consumer group

B.

Maximum Idle time

C.

Parallel server limit

D.

CPU

E.

Exadata I/O

F.

Local file system I/O

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Question # 18

You plan to recover the SCOTT.EMP table to a specific point in time by using RMAN:

RMAN> RECOVER TABLE SCOTT.EMP UNTILL SYSDATE-2 USING AUXILIARY LOCATION ‘+RECO’;

Which five steps are performed by RMAN? (Choose five.)

A.

truncating the SCOTT.EMP table in the original database

B.

exporting the SCOTT.EMP table from the auxiliary database

C.

flashing back the original database to the desired point in time

D.

recovering the auxiliary database to the desired point in time

E.

creating an auxiliary instance

F.

importing the SCOTT.EMP table into the original database

G.

restoring the tablespaces required for point-in-time recovery

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Question # 19

Examine the following command:

ALTER SYSTEM SET enable_ddl_logging=TRUE;

Which statement is true?

A.

Only the data definition language (DDL) commands that resulted in errors are logged in the alert log file.

B.

All DDL commands are logged in the alert log file.

C.

All DDL commands are logged in a different log file that contains DDL statements and their execution dates.

D.

Only DDL commands that resulted in the creation of new segments are logged.

E.

All DDL commands are logged in XML format in the alert directory under the Automatic Diagnostic Repository (ADR) home.

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Question # 20

Your database supports an online transaction processing (OLTP) application. The application is undergoing some major schema changes, such as addition of new indexes and materialized views. You want to check the impact of these changes on workload performance.

What should you use to achieve this?

A.

Database replay

B.

SQL Tuning Advisor

C.

SQL Access Advisor

D.

SQL Performance Analyzer

E.

Automatic Workload Repository compare reports

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Question # 21

On your Oracle 12c database, you invoked SQL*Loader to load data into the EMPLOYEES table in the HR schema by issuing the following command:

$> sqlldr hr/hr@pdb table=employees

Which two statements are true regarding the command? (Choose two.)

A.

It succeeds with default settings if the EMPLOYEES table belonging to HR is already defined in the database.

B.

It fails because no SQL *Loader data file location is specified.

C.

It fails if the HR user does not have the CREATE ANY DIRECTORY privilege.

D.

It fails because no SQL *Loader control file location is specified.

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Question # 22

On your Oracle 12c database, you issue the following commands to create indexes:

SQL > CREATE INDEX oe.ord_customer_ix1 ON oe.orders (customer_id, sales_rep_id) INVISIBLE;

SQL> CREATE BITMAP INDEX oe.ord_customer_ix2 ON oe.orders (customer_id, sales_rep_id);

Which two statements are true? (Choose two.)

A.

The optimizer evaluates index access from both the indexes before deciding on which index to use for a query execution plan.

B.

Both the indexes are created: however, only ORD_CUSTOMER_IX2 index is visible.

C.

Only the ORD_CUSTOMER_IX1 index is created.

D.

Only the ORD_CUSTOMER_IX2 index is created.

E.

Both the indexes are updated when a new row is inserted, updated, or deleted in the ORDERS table.

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Question # 23

Which statement is true concerning compression during an Online Datafile Move?

A.

Uncompressed data files may be moved online to compress the entire file with Hybrid Columnar Compression.

B.

All objects In a data file to be moved will always be be compressed.

C.

The DBA may choose which objects In the datafile to be moved get compressed.

D.

If an object is already compressed in the source location, then the compression type for that object remains unchanged after the move.

E.

Only tables may be compressed during the Online Datafile Move.

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Question # 24

Your multitenant container database (CDB) contains two pluggable databases (PDBs). Which three tools can be used to add a new PDB to the CDB?

A.

Oracle Universal Installer (OUI)

B.

Database Configuration Assistant (DBCA)

C.

Database Upgrade Assistant (DBUA)

D.

Enterprise Manager Cloud Control

E.

SQL Developer

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Question # 25

Which three features work together, to allow a SQL statement to have different cursors for the same statement based on different selectivity ranges? (Choose three.)

A.

Bind Variable Peeking

B.

SQL Plan Baselines

C.

Adaptive Cursor Sharing

D.

Bind variable used in a SQL statement

E.

Literals in a SQL statement

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Question # 26

You find this query being used in your Oracle 12c database:

Which method is used by the optimizer to limit the rows being returned?

A.

A TOP-N query is created during execution and a filter is added to the query dynamically using ROWNUM to limit the rows to 20 percent of the total rows.

B.

A view is created during execution and a filter on the view limits the rows to 20 percent of the total rows.

C.

All the rows are returned to the client or middle tier but only the first 20 percent are returned to the screen or the application.

D.

A filter is added to the query dynamically using ROWNUM to limit the rows to 20 percent of the total rows.

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Question # 27

Identify two situations in which the alert log file is updated. (Choose two.)

A.

Running a query on a table returns ORA-600: Internal Error.

B.

Inserting a value into a table returns ORA-01722: invalid number.

C.

Creating a table returns ORA-00955: name us already in used by an existing objects.

D.

Inserting a value into a table returns ORA-00001: unique constraint (SYS.OK_TECHP) violated.

E.

Rebuilding an index using ALTER INDEX ... REBUILD fails with an ORA-01578: ORACLE data block corrupted (file # 14, block # 50) error.

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Question # 28

Which two statements are true about the Oracle Direct Network File system (DNFS)? (Choose two.)

A.

It utilizes the OS file system cache.

B.

A traditional NFS mount is not required when using Direct NFS.

C.

Oracle Disk Manager can manage NFS on its own, without using the operating kernel NFS driver.

D.

Direct NFS is available only in UNIX platforms.

E.

Direct NFS can load-balance I/O traffic across multiple network adapters.

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Question # 29

Examine the portion of this Active Session History (ASH) report that is marked with a red rectangle:

Which two inferences can be drawn from the report?

A.

Sessions attempting to read blocks Images in the buffer cache are waiting while other sessions are reading the same block images

B.

Sessions are waiting for writes of modified block images in the buffer cache to complete

C.

Sessions attempting to modify blocks images In the buffer cache are waiting while other sessions are reading the same block images

D.

Sessions attempting to read blocks images in the buffer cache are waiting while other sessionsare modifying the same block images

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Question # 30

Identify three scenarios in which you would recommend the use of SQL Performance Analyzer to analyze impact on the performance of SQL statements. (Choose three.)

A.

Change in the Oracle Database version

B.

Change in your network infrastructure

C.

Change in the hardware configuration of the database server

D.

Migration of database storage from non-ASM to ASM storage

E.

Database and operating system upgrade

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Question # 31

Examine the commands executed to monitor database operations:

Which two statements are true? (Choose two.)

A.

Database operations will be monitored only when they consume a significant amount of resources.

B.

Database operations for all sessions will be monitored.

C.

Database operations will be monitored only if the STATISTICS_LEVEL parameter is set to TYPICAL and CONTROL_MANAGEMENT_PACK_ACCESS is set to DIAGNOSTIC+TUNING.

D.

Only DML and DDL statements will be monitored for the session.

E.

All subsequent statements in the session will be treated as one database operation and will be monitored.

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