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Code d'Examen: 1z0-062
Nom d'Examen: Oracle (Oracle Database 12c: Installation and Administration)
Questions et réponses: 166 Q&As

Code d'Examen: 1z0-067
Nom d'Examen: Oracle (Upgrade Oracle9i/10g/11g OCA to Oracle Database 12c OCP)
Questions et réponses: 177 Q&As

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NO.1 For which two requirements would you use the Database Resource Manager?
A. limiting the CPU used per database call
B. specifying the maximum number of concurrent sessions allowed for a user
C. specifying the amount of private space a session can allocate in the shared pool of the SGA
D. limiting the degree of parallelism of operations performed by a user or group of users
E. specifying an idle time limit that applies to sessions that are idle and blocking other sessions
Answer: B,E

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NO.2 You notice that the performance of your production 24/7 Oracle 12c database has significantly
degraded. Sometimes you are not able to connect to the instance because it hangs. You do not want
to restart the database instance.
How can you detect the cause of the degraded performance?
A. Enable Memory Access Mode, which reads performance data from SGA.
B. Use emergency monitoring to fetch data directly from SGA for analysis.
C. Run Automatic Database Diagnostic Monitor (ADDM) to fetch information from the latest
Automatic Workload Repository (AWR) snapshots.
D. Use Active Session History (ASH) data and hang analysis in regular performance monitoring,
E. Run ADDM in diagnostic mode.
Answer: C

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Explanation:
* In most cases, ADDM output should be the first place that a DBA looks when notified of a
performance problem.
* Performance degradation of the database occurs when your database was performing optimally in
the past, such as 6 months ago, but has gradually degraded to a point where it becomes noticeable to
the users. The Automatic Workload Repository (AWR) Compare Periods report enables you to
compare database performance between two periods of time.
While an AWR report shows AWR data between two snapshots (or two points in time), the AWR
Compare Periods report shows the difference between two periods (or two AWR reports with a total
of four snapshots). Using the AWR Compare Periods report helps you to identify detailed
performance attributes and configuration settings that differ between two time periods.
Reference: Resolving Performance Degradation Over Time

NO.3 Which two statements are true when row-archival management is enabled?
A. Visibility of theORA_ARCHIVE_STATEcolumn is controlled by the row archival visibility session
parameter.
B. TheORA_ARCHIVE_STATEcolumn is updated manually or by a program that can reference activity
tracking columns, to indicate that a row is no longer considered active.
C. The row archival visibility session parameter defaults to all rows.
D. TheORA_ARCHIVE_STATEcolumn is visible if it is referenced in the select list of a query.
E. TheORA_ARCHIVE_STATEcolumn is updated automatically by the database based on activity
tracking columns, to indicate that a row is no longer considered active.
Answer: A,D

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NO.4 Which three statements are true about Consolidated Database Replay?
A. The workload capture and replay systems must have the same operating system (OS).
B. Multiple workload captures from multiple databases can be replayed simultaneously on all
pluggable databases (PDBs) in a multitenant container database (CDB).
C. A subset of the captured workload can be replayed.
D. The number of captured workloads must be the same as the number of PDBs in a multitenant CDB
.
E. Multiple replay schedules can be defined for a consolidated replay and during replay initialization,
you can select from any of the existing replay schedules.
Answer: B,C,E

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NO.5 In which three scenarios is media recovery required?
A. when a tablespace is accidentally dropped from a database
B. when archived redo log files are lost
C. when data files are lost
D. when one of the online redo log members is corrupted
E. when all control files are lost
Answer: A,D,E

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Reference:http://docs.oracle.com/cd/A87860_01/doc/server.817/a76993/recoscen.htm

NO.6 You issue the command:
SQL> ALTER DATABASE BACKUP CONTROLFILE TO TRACE;
Which statement is true about the command?
A. It creates a copy of the control file and stores it in the location specifiedin the diagnostic_dest
initialization parameter.
B. It creates a file that contains the SQL statement, which is required to re-create the control file.
C. It updates the alert log file with the location and contents of the control file.
D. It creates a binary backup of the control file.
Answer: A

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NO.7 Which statement is true about the loss or damage of a temp file that belongs to the temporary
tablespace of a pluggable database (PDB)?
A. The PDB is closed and the temp file is re-created automatically when the PDB is opened.
B. The PDB is closed and requires media recovery at the PDB level.
C. The PDB does not close and the temp file is re-created automatically whenever the container
database (CDB) is opened.
D. The PDB does not close and starts by using the default temporary tablespace defined for the CD
Answer: A

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NO.8 Automatic Undo Management is enabled for your database. You want a user to retrieve
metadata and historical data for a given transaction or for transactions in a given time interval.
Which three are prerequisites to fulfill this requirement?
A. Minimal supplemental logging must be enabled.
B. The database must be running in archivelog mode.
C. Flashback Data Archive must be created and the flashback archive administer system privilege
must be granted to the user.
D. The flashback any table privilege must be granted to the user.
E. The select any transaction privilege must be granted to the user.
F. Therecycle binparameter must be set to on.
Answer: C,D,E

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Code d'Examen: 1z0-591
Nom d'Examen: Oracle (Oracle Business Intelligence Foundation Suite 11g Essentials)
Questions et réponses: 120 Q&As

Code d'Examen: 1z0-062
Nom d'Examen: Oracle (Oracle Database 12c: Installation and Administration)
Questions et réponses: 166 Q&As

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NO.1 What happens if a maintenance window closes before a job that collects optimizer statistics
completes?
A. The job is terminated and the gathered statistics are not saved.
B. The job is terminated but the gathered statistics are not published.
C. The job continues to run until all statistics are gathered.
D. The job is terminated and statistics for the remaining objects are collected the next time the
maintenance window opens.
Answer: D

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NO.2 Examine the resources consumed by a database instance whose current Resource Manager
plan is displayed.
SQL> SELECT name, active_sessions, queue_length, Consumed_cpu_time, cpu_waits,
cpu_wait_time FROM v$rsrc_consumer_group;
NAMEACTIVE_SESSIONS QUEUE_LENGTH CONSUMED_CPU_WAITS CPU_WAIT_TIME
OLTP__ORDER__ENTRY1029690 467 6709 OTHES__GROUPS 0 059823664089 60425 SYS_GROUP 1
02420704 914 19540 DS.S_QUERIES4245946603004 55700
Which two statements are true?
A. An attempt to start a new session by a user belonging to DSS_QUERIES fails with an error.
B. An attempt to start a new session by a user belonging to OTHE_GROUPS fails with an error.
C. The CPU_WAIT_TIME column indicates the total time that sessions in the consumer group waited
for the CPU due to resource management.
D. The CPU_WAIT_TIME column indicates the total time that sessions in the consumer group waited
for the CPU due to I/O waits and latch or enqueue contention.
E. A user belonging to the DSS__QUERIES resource consumer group can create a new session but
the session will be queued.
Answer: C,E

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NO.3 Examine the parameters for your database instance:
NAMETYPE VALUE
undo_management string AUTO undo_retentioninteger 12 00 undo_tablespace string UNDOTBS1
You execute the following command:
SQL> ALTER TABLESPACE undotbs1 RETENTION NOGUARANTEE;
Which statement is true in this scenario?
A. Undo data is written to flashback logs after 1200 seconds.
B. Inactive undo data is retained for 1200 seconds even if subsequent transactions fail due to lack of
space in the undo tablespace.
C. You can perform a Flashback Database operation only within the duration of 1200 seconds.
D. An attempt is made to keep inactive undo for 1200 seconds but transactions may overwrite the
undo before that time has elapsed.
Answer: A

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NO.4 Which three statements are true about a job chain?
A. It can contain a nested chain of jobs.
B. It can be used to implement dependency-based scheduling.
C. It cannot invoke the same program or nested chain in multiple steps in the chain.
D. It cannot have more than one dependency.
E. It can be executed using event-based or time-based schedules.
Answer: A,B,E

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Reference:
http://docs.oracle.com/cd/B28359_01 /server.111 /b28310/scheduse009.htm#ADMIN12459
12. Which two tasks can be performed on an external table?
A. partitioning the table
B. creating an invisible index
C. updating the table by using an update statement
D. creating a public synonym
E. creating a view
Answer: C,D

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13. A user establishes a connection to a database instance by using an Oracle Net connection.
You want to ensure the following:
1.The user account must be locked after five unsuccessful login attempts.
2.Data read per session must be limited for the user. 3- The user cannot have more than three
simultaneous sessions.
4. The user must have a maximum of 10 minutes session idle time before being logged off
automatically.
How would you accomplish this?
A. by granting a secure application role to the user
B. by implementing Database Resource Manager
C. by using Oracle Label Security options
D. by assigning a profile to the user
Answer: D

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14. Which action takes place when a file checkpoint occurs?
A. The checkpoint position is advanced in the checkpoint queue.
B. All buffers for a checkpointed file that were modified before a specific SCN are written to disk by
DBWn and the SCN is stored in the control file.
C. The Database Writer process (DBWn) writes all dirty buffers in the buffer cache to data files.
D. The Log Writer process (LGWR) writes all redo entries in the log buffer to online redo log files.
Answer: C

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15. As a user of the ORCL database, you establish a database link to the remote HQ database
such that all users in the ORCL database may access tables only from the SCOTT schema in the HQ
database. SCOTT's password is TIGER. The service mane "HQ" is used to connect to the remote HQ
database.
Which command would you execute to create the database link?
A. CREATE DATABASE LINK HQ USING 'HQ';
B. CREATE DATABASE LINK HQ CONNECT TO CXJRRENT_USER USING HQ' S
C. CREATE PUBLIC DATABASE LINK HQ CONNECT TO scott IDENTIFIED BY tiger USING 'HQ';
D. CREATE DATABASE LINK HQ CONNECT TO scott IDENTIFIED BY tiger USING 'HQ';
Answer: B

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NO.5 Which three factors influence the optimizer's choice of an execution plan?
A. the optimizer_mode initialization parameter
B. operating system (OS) statistics
C. cardinality estimates
D. object statistics in the data dictionary
E. fixed baselines
Answer: A,B

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Reference: http://docs.oracle.com/cd/B19306_01 /server.102 /b14211 /optimops.htm

NO.6 You plan to create a database by using the Database Configuration Assistant (DBCA), with the
following specifications:
-Applications will connect to the database via a middle tier.
-The number of concurrent user connections will be high.
-The database will have mixed workload, with the execution of complex BI queries scheduled at
night.
Which DBCA option must you choose to create the database?
A. a General Purpose database template with default memory allocation
B. a Data Warehouse database template, with the dedicated server mode option and AMM enabled
C. a General Purpose database template, with the shared server mode option and Automatic
Memory Management (AMM) enabled
D. a default database configuration
Answer: C

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Reference:
http://www.oracledistilled.com/oracle-database/administration/creating-a-databaseusing-database
-configuration-assistant/

NO.7 Which two statements correctly describe the relationship between data files and logical
database structures?
A. A segment cannot span data files.
B. A data file can belong to only one tablespace.
C. An extent cannot span data files.
D. The size of an Oracle data block in a data file should be the same as the size of an OS block.
Answer: B,C

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Reference: https://mohibalvi.wordpress.com/tag/alter-tablespace/

NO.8 The hr user receiver, the following error while inserting data into the sales table: ERROR at line
1:
ORA-01653; unable to extend table HR.SALES by 128 in tablespace USERS
On investigation, you find that the users tablespace uses Automnrif Segment Space Management
(ASSM). It is the default tablespace for the HR user with an unlimited quota on it.
Which two methods would you use to resolve this error?
A. Altering the data life associated with the USERS tablespace to ex automatically
B. Adding a data life to the USERS tablespace
C. Changing segment space management for the USERS tablespace to manual
D. Creating a new tablespace with autoextend enabled and changing the default tablespace of the
HR user to the new tablespace
E. Enabling resumable space allocation by setting the RESUMABLE_TIMEOUT parameter to a
nonzero value
Answer: A,D

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