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Home Oracle 1z0-062

Oracle 1z0-062 Exam Practice Questions (P. 2)

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Question #11
Which three statements are true about a job chain? (Choose three.)
  1. A
    It can contain a nested chain of jobs.
  2. B
    It can be used to implement dependency-based scheduling.
  3. C
    It cannot invoke the same program or nested chain in multiple steps in the chain.
  4. D
    It cannot have more than one dependency.
  5. E
    It can be executed using event-based or time-based schedules.

Correct Answer:
ABE
References:

Question #12
The HR user receives the following error while inserting data into the sales table:

On investigation, you find that the users tablespace uses Automatic 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? (Choose two.)
  1. A
    Altering the data file associated with the USERS tablespace to extend automatically
  2. B
    Adding a data file to the USERS tablespace
  3. C
    Changing segment space management for the USERS tablespace to manual
  4. D
    Creating a new tablespace with autoextend enabled and changing the default tablespace of the HR user to the new tablespace
  5. E
    Enabling resumable space allocation by setting the RESUMABLE_TIMEOUT parameter to a nonzero value

Correct Answer:
AB

Question #13
Which three factors influence the optimizer's choice of an execution plan? (Choose three.)
  1. A
    the optimizer_mode initialization parameter
  2. B
    operating system (OS) statistics
  3. C
    cardinality estimates
  4. D
    object statistics in the data dictionary
  5. E
    fixed baselines

Correct Answer:
ACD
References:

Question #14
Examine the resources consumed by a database instance whose current Resource Manager plan is displayed.

Which two statements are true? (Choose two.)
  1. A
    An attempt to start a new session by a user belonging to DSS_QUERIES fails with an error.
  2. B
    An attempt to start a new session by a user belonging to OTHER_GROUPS fails with an error.
  3. C
    The CPU_WAIT_TIME column indicates the total time that sessions in the consumer group waited for the CPU due to resource management.
  4. 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.
  5. E
    A user belonging to the DSS__QUERIES resource consumer group can create a new session but the session will be queued.

Correct Answer:
CE

Question #15
Which action takes place when a file checkpoint occurs?
  1. A
    The checkpoint position is advanced in the checkpoint queue.
  2. 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.
  3. C
    The Database Writer process (DBWn) writes all dirty buffers in the buffer cache to data files.
  4. D
    The Log Writer process (LGWR) writes all redo entries in the log buffer to online redo log files.

Correct Answer:
B

Question #16
Examine the structure of the sales table, which is stored in a locally managed tablespace with Automatic Segment Space Management (ASSM) enabled.

You want to perform online segment shrink to reclaim fragmented free space below the high water mark.
What should you ensure before the start of the operation?
  1. A
    Row movement is enabled.
  2. B
    Referential integrity constraints for the table are disabled.
  3. C
    No queries are running on this table.
  4. D
    Extra disk space equivalent to the size of the segment is available in the tablespace.
  5. E
    No pending transaction exists on the table.

Correct Answer:
A

Question #17
Which task would you recommend before using the Database Upgrade Assistant (DBUA) to upgrade a single-instance Oracle 11g R2 database to Oracle
Database 12c?
  1. A
    shutting down the database instance that is being upgraded
  2. B
    executing the catctl.pl script to run the upgrade processes in parallel
  3. C
    running the Pre-Upgrade Information Tool
  4. D
    copying the listener.ora file to the new ORACLE_HOME

Correct Answer:
C
References:
http://docs.oracle.com/cd/E11882_01/server.112/e23633/upgrade.htm#UPGRD12395

Question #18
Your database is open and the listener LISTENER is up. You issue the command:

LSNRCTL> RELOAD -
What is the effect of reload on sessions that were originally established by listener?
  1. A
    Only sessions based on static listener registrations are disconnected.
  2. B
    Existing connections are not disconnected; however, they cannot perform any operations until the listener completes the re-registration of the database instance and service handlers.
  3. C
    The sessions are not affected and continue to function normally.
  4. D
    All the sessions are terminated and active transactions are rolled back.

Correct Answer:
C

Question #19
Which statement is true regarding the startup of a database instance?
  1. A
    The instance does not start up normally and requires manual media recovery after a shutdown using the abort option.
  2. B
    Uncommitted transactions are rolled back during the startup of the database instance after a shutdown using the immediate option.
  3. C
    There is no difference in the underlying mechanics of the startup whether the database is shut down by using the immediate option or the abort option.
  4. D
    Media recovery is required when the database is shut down by using either the immediate option or the abort option.
  5. E
    Instance recovery is not required if the database instance was shut down by using SHUTDOWN IMMEDIATE.

Correct Answer:
E
References:
http://docs.oracle.com/cd/A87860_01/doc/server.817/a76956/start.htm

Question #20
Examine the memory-related parameters set in the SPFILE of an Oracle database:

Which statement is true?
  1. A
    Only SGA components are sized automatically.
  2. B
    Memory is dynamically re-allocated between the SGA and PGA as needed.
  3. C
    The size of the PGA cannot grow automatically beyond 500 MB.
  4. D
    The value of the MEMORY_TARGET parameter cannot be changed dynamically.

Correct Answer:
B

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