Oracle Oracle Certifications 1Z0-062 Questions & Answers

• Question 281:

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

  A. They are tied to a specific statement or SQL ID.

  B. They instruct the maintenance job to collect missing statistics or perform dynamic sampling to generate a more optimal plan.

  C. They are used to gather only missing statistics.

  D. They are created for a query expression where statistics are missing or the cardinality estimates by the optimizer are incorrect.

  E. They instruct the optimizer to create only column group statistics.

  F. Improve plan accuracy by persisting both compilation and execution statistics in the SYSAUX tablespace.

  Correct Answer: BDF

• Question 282:

  You want to flash back a test database by five hours. You issue this command:

  SQL > FLASHBACK DATABASE TO TIMESTAMP (SYSDATE - 5/24);

  Which two statements are true about this flashback scenario? (Choose two.)

  A. The database must have multiplexed redo logs for the flashback to succeed.

  B. The database must be MOUNTED for the flashback to succeed.

  C. The database must use block change tracking for the flashback to succeed.

  D. The database must be opened in restricted mode for the flashback to succeed.

  E. The database must be opened with the RESETLOGS option after the flashback is complete.

  F. The database must be opened in read-only mode to check if the database has been flashed back to the correct SCN.

  Correct Answer: BE

• Question 283:

  You are about to plug a multi-terabyte non-CDB into an existing multitenant container database (CDB) as a pluggable database (PDB).

  The characteristics of the non-CDB are as follows:

  –

  Version: Oracle Database 12c Releases 1 64-bit

  –

  Character set: WE8ISO8859P15

  –

  National character set: AL16UTF16

  –

  O/S: Oracle Linux6 64-bit

  The characteristics of the CDB are as follows:

  –

  Version: Oracle Database 12c Release 1 64-bit

  –

  Character set: AL32UTF8

  –

  O/S: Oracle Linux 6 64-bit

  Which technique should you use to minimize down time while plugging this non-CDB into the CDB?

  A. Transportable database

  B. Transportable tablespace

  C. Data Pump full export / import

  D. The DBMS_PDB package

  E. RMAN

  Correct Answer: C

• Question 284:

  Your database has the SRV1 service configured for an application that runs on middle-tier application server. The application has multiple modules. You enable tracing at the service level by executing the following command:

  SQL > exec DBMS_MONITOR.SERV_MOD_ACT_TRACE_ENABLE (`SRV1');

  The possible outcome and actions to aggregate the trace files are as follows:

  1.

  The command fails because a module name is not specified.

  2.

  A trace file is created for each session that is running the SRV1 service.

  3.

  An aggregated trace file is created for all the sessions that are running the SRV1 service.

  4.

  The trace files may be aggregated by using the trcess utility.

  5.

  The trace files be aggregated by using the tkprof utility.

  Identify the correct outcome and the step to aggregate by using tkprof utility?

  A. 1

  B. 2 and 4

  C. 2 and 5

  D. 3 and 4

  E. 3 and 5

  Correct Answer: B

  Tracing information is present in multiple trace files and you must use the trcsess tool to collect it into a

  single file.

  Incorrect:

  Not 1: Parameter service_name

  Name of the service for which tracing is enabled.

  module_name

  Name of the MODULE. An optional additional qualifier for the service.

  Note:

  *

  The procedure enables a trace for a given combination of Service, MODULE and ACTION name. The specification is strictly hierarchical: Service Name or Service Name/MODULE, or Service Name, MODULE, and ACTION name must be specified. Omitting a qualifier behaves like a wild-card, so that not specifying an ACTION means all ACTIONs. Using the ALL_ACTIONS constant achieves the same purpose.

  *

  SERV_MOD_ACT_TRACE_ENABLE Procedure

  This procedure will enable SQL tracing for a given combination of Service Name, MODULE and ACTION globally unless an instance_name is specified.

  *

  DBMS_MONITOR.SERV_MOD_ACT_TRACE_ENABLE(

  service_name IN VARCHAR2,

  module_name IN VARCHAR2 DEFAULT ANY_MODULE,

  action_name IN VARCHAR2 DEFAULT ANY_ACTION,

  waits IN BOOLEAN DEFAULT TRUE,

  binds IN BOOLEAN DEFAULT FALSE,

  instance_name IN VARCHAR2 DEFAULT NULL);

• Question 285:

  Which three statements are true about the working of system privileges in a multitenant control database (CDB) that has pluggable databases (PDBs)? (Choose three.)

  A. System privileges apply only to the PDB in which they are used.

  B. Local users cannot use local system privileges on the schema of a common user.

  C. The granter of system privileges must possess the set container privilege.

  D. Common users connected to a PDB can exercise privileges across other PDBs.

  E. System privileges with the with grant option container all clause must be granted to a common user before the common user can grant privileges to other users.

  Correct Answer: ACE

  A, Not D: In a CDB, PUBLIC is a common role. In a PDB, privileges granted locally to PUBLIC enable all local and common users to exercise these privileges in this PDB only.

  C: A user can only perform common operations on a common role, for example, granting privileges

  commonly to the role, when the following criteria are met:

  The user is a common user whose current container is root.

  The user has the SET CONTAINER privilege granted commonly, which means that the privilege applies in all containers.

  The user has privilege controlling the ability to perform the specified operation, and this privilege has been granted commonly Incorrect:

  Note:

  * Every privilege and role granted to Oracle-supplied users and roles is granted commonly except for system privileges granted to PUBLIC, which are granted locally.

• Question 286:

  In your multitenant container database (CDB) containing same pluggable databases (PDBs), you execute the following commands in the root container:

  

  Which two statements are true? (Choose two.)

  A. The C # # ROLE1 role is created in the root database and all the PDBs.

  B. The C # # ROLE1 role is created only in the root database because the container clause is not used.

  C. Privileges are granted to the C##A_ADMIN user only in the root database.

  D. Privileges are granted to the C##A_ADMIN user in the root database and all PDBs.

  E. The statement for granting a role to a user fails because the CONTAINER clause is not used.

  Correct Answer: AC

  * You can include the CONTAINER clause in several SQL statements, such as the CREATE USER,

  ALTER USER, CREATE ROLE, GRANT, REVOKE, and ALTER SYSTEM statements.

  * * CREATE ROLE with CONTAINER (optional) clause

  / CONTAINER = ALL

  Creates a common role.

  / CONTAINER = CURRENT

  Creates a local role in the current PDB.

• Question 287:

  The persistent configuration settings for RMAN have default for all parameters.

  Identify four RMAN commands that produce a multi-section backup.

  A. BACKUP TABLESPACE SYSTEM SECTION SIZE 100M;

  B. BACKUP AS COPY TABLESPACE SYSTEM SECTION SIZE 100M;

  C. BACKUP ARCHIVELOG ALL SECTION SIZE 25M;

  D. BACKUP TABLESPACE "TEMP" SECTION SIZE 10M;

  E. BACKUP TABLESPACE "UNDO" INCLUDE CURRENT CONTROLFILE SECTION SIZE 100M;

  F. BACKUP SPFILE SECTION SIZE 1M;

  G. BACKUP INCREMENTAL LEVEL 0 TABLESPACE SYSAUX SECTION SIZE 100M;

  Correct Answer: ABEG

• Question 288:

  Flashback is enabled for your multitenant container database (CDB), which contains two pluggable database (PDBs). A local user was accidently dropped from one of the PDBs.

  You want to flash back the PDB to the time before the local user was dropped. You connect to the CDB and execute the following commands:

  SQL > SHUTDOWN IMMEDIATE SQL > STARTUP MOUNT SQL > FLASHBACK DATABASE to TIME "TO_DATE (`08/20/12' , `MM/DD/YY')";

  Examine following commands:

  1.

  ALTER PLUGGABLE DATABASE ALL OPEN;

  2.

  ALTER DATABASE OPEN;

  3.

  ALTER DATABASE OPEN RESETLOGS;

  Which command or commands should you execute next to allow updates to the flashback back schema?

  A. Only 1

  B. Only 2

  C. Only 3

  D. 3 and 1

  E. 1 and 2

  Correct Answer: D

• Question 289:

  Examine the commands executed to monitor database operations:

  $> conn sys oracle/oracle@prod as sysdba SQL > VAR eid NUMBER SQL > EXEC: eid := DBMS_SQL_MONITOR.BEGIN_OPERATION (`batch_job' , FORCED_TRACKING => `Y');

  Which two statements are true? (Choose two.)

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

  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 DIAGNISTIC + 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.

  Correct Answer: CE

  C: Setting the CONTROL_MANAGEMENT_PACK_ACCESS initialization parameter to DIAGNOSTIC +TUNING (default) enables monitoring of database operations. Real-Time SQL Monitoring is a feature of the Oracle Database Tuning Pack.

  Note:

  * The DBMS_SQL_MONITOR package provides information about Real-time SQL Monitoring and Real-

  time Database Operation Monitoring.

  *(not B) BEGIN_OPERATION Function

  starts a composite database operation in the current session.

  / (E) FORCE_TRACKING - forces the composite database operation to be tracked when the operation starts. You can also use the string variable 'Y'.

  / (not A) NO_FORCE_TRACKING - the operation will be tracked only when it has consumed at least 5 seconds of CPU or I/O time. You can also use the string variable 'N'.

• Question 290:

  You use the segment advisor to help determine objects for which space may be reclaimed.

  Which three statements are true about the advisor given by the segment advisor? (Choose three.)

  A. It may advise the use of online table redefinition for tables in dictionary managed tablespace.

  B. It may advise the use of segment shrink for tables in dictionary managed tablespaces it the no chained rows.

  C. It may advise the use of online table redefinition for tables in locally managed tablespaces

  D. It will detect and advise about chained rows.

  E. It may advise the use of segment shrink for free list managed tables.

  Correct Answer: ACD