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Code d'Examen: 1Z0-052
Nom d'Examen: Oracle (Oracle Database 11g: Administrator I )
Questions et réponses: 205 Q&As
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NO.1 Which two statements about the background process of the database writer are true? (Choose two.)
A.It is possible to have multiple database writers in an Oracle instance.
B.It writes dirty buffers, if any, to data files whenever a checkpoint occurs.
C.It writes dirty buffers, if any, to data files whenever a transaction commits.
D.It writes dirty buffers, if any, to data files before the log writer (LGWR) writes.
Answer: AB
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NO.2 The database instance is currently using SPFILE. View the Exhibit and examine the error that you
received while running the DB Structure Integrity check.
Given below are the steps to recover from the error in random order:
1. Shut down the instance, if not already done.
2: Copy one of the remaining control files to a new location.
3: Change the value of the CONTROL_FILES initialization parameter to correspond to the new location of
the control files.
4: Start up the database instance to the NOMOUNT stage.
5: Recover the database to the point of failure of the control file.
NO.3 Your test database is running in NOARCHIVELOG mode. Which statement is true regarding the type of
backups that can be performed on the database?
A.You can perform online whole database backups.
B.You can perform offline whole database backups.
C.You cannot perform schema-level export/import operations.
D.You can perform the backup of only the SYSTEM tablespace when the database is open.
Answer: B
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NO.4 You have issued a SHUTDOWN ABORT command to bring down your database instance. Consider
the steps that will be performed later when you open the database:
1. SGA is allocated.
2: Control file is read.
3: Redo log files are read.
4: Instance recovery is started.
5: Background processes are started.
6: Data files are checked for consistency.
7: Server parameter file or the initialization parameter file is read.
Which option has the correct order in which these steps occur?
A.7, 1, 5, 2, 3, 6, 4
B.1, 2, 3,7, 5, 6, 4
C.7, 1, 4, 5, 2, 3, 6
D.1, 7, 5, 4, 2, 3, 6
Answer: A
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NO.5 Open the database.
Identify the correct sequence of steps?
A.1, 2, 4, 3, 5, 6
B.2, 4, 3, 5, 6; 1 not required
C.4, 5, 6, 2, 3; 1 not required
D.5, 2, 3, 4; 1 and 6 not required
Answer: A
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6. Note the following points describing various utilities in Oracle Database 11g:
1. It enables the high-speed transfer of data from one database to another.
2: It provides a complete solution for the backup, restoration, and recovery needs of the entire database.
3: It enables the loading of data from an external file into an Oracle database.
4: It provides a tape backup management for the Oracle ecosystem.
Which point describes Oracle Secure Backup?
A.1
B.2
C.3
D.4
E.1, 2, and 4
F.1, 2, 3, and 4
Answer: D
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NO.6 View the Exhibit and examine the attributes of an undo tablespace.
In an OLTP system, the user SCOTT has started a query on a large table in the peak transactional hour
that performs bulk inserts. The query runs for more than 15 minutes and then SCOTT receives the
following error:
ORA-01555: snapshot too old
What could be the reason for this error?
A.The query is unable to get a read-consistent image.
B.There is not enough space in Flash Recovery Area.
C.There is not enough free space in the flashback archive.
D.The query is unable to place data blocks in undo tablespace
Answer: A
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NO.7 View the Exhibit and examine the privileges granted to the SL_REP user.
The EMP table is owned by the SCOTT user. The SL_REP user executes the following command:
SQL> GRANT SELECT ON scott.emp TO hr;
Which statement describes the outcome of the command?
A.The command executes successfully.
B.The command produces an error because the EMP table is owned by SCOTT.
C.The command produces an error because SL_REP has the GRANT ANY OBJECT PRIVILEGE without
ADMIN_OPTION.
D.The command produces an error because SL_REP does not have the SELECT privilege with
GRANT_OPTION on the EMP table.
Answer: A
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NO.8 Which two statements are true about Shared SQL Area and Private SQL Area? (Choose two.)
A.Shared SQL Area will be allocated in the shared pool.
B.Shared SQL Area will be allocated when a session starts.
C.Shared SQL Area will be allocated in the large pool always.
D.Private SQL Area will be allocated in the Program Global Area (PGA) always.
E.Shared SQL Area and Private SQL Area will be allocated in the PGA or large pool.
F.The number of Private SQL Area allocations is dependent on the OPEN_CURSORS parameter.
Answer: AF
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NO.9 Examine the following statement that is used to modify the constraint on the SALES table:
SQL> ALTER TABLE SALES MODIFY CONSTRAINT pk DISABLE VALIDATE;
Which three statements are true regarding the above command? (Choose three.)
A.The constraint remains valid.
B.The index on the constraint is dropped.
C.It allows the loading of data into the table using SQL *Loader.
D.New data conforms to the constraint, but existing data is not checked.
E.It allows the data manipulation on the table using INSERT/UPDATE/DELETE SQL statements.
Answer: ABC
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NO.10 You have set Tablespace Full Metrics Threshold values for the USERS tablespace as follows:
Warning (%): 90
Critical (%): 95
Which background process is responsible for issuing alerts when the threshold is crossed?
A.System monitor (SMON)
B.Process monitor (PMON)
C.Memory manager process (MMAN)
D.Manageability Monitor process (MMON)
Answer: D
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NO.11 While observing the index statistics, you find that an index is highly fragmented, thereby resulting in
poor database performance. Which option would you use to reduce fragmentation without affecting the
users who are currently using the index?
A.Validate the index structure using the ANALYZE...INDEX command.
B.Rebuild the index using the ALTER INDEX..REBUILD ONLINE command.
C.Change the block space utilization parameters using the ALTER INDEX command.
D.Deallocate the unused space in the index using the ALTER INDEX..DEALLOCATE UNUSED command.
Answer: B
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NO.12 Which is the correct description of a pinned buffer in the database buffer cache?
A.The buffer is currently being accessed.
B.The buffer is empty and has not been used.
C.The contents of the buffer have changed and must be flushed to the disk by the DBWn process.
D.The buffer is a candidate for immediate aging out and its contents are synchronized with the block
contents on the disk.
Answer: A
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NO.13 Which two statements are true about the Automatic Workload Repository (AWR)? (Choose two.)
A.All AWR tables belong to the SYSTEM schema.
B.The AWR contains systemwide tracing and logging information.
C.The snapshots collected by the AWR are accessible through data dictionary views.
D.The snapshots collected by the AWR are used by self-tuning components in the database.
Answer: CD
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NO.14 Note the functionalities of various background processes:
1. Perform recovery at instance startup.
2: Free the resources used by a user process when it fails.
3: Cleanup the database buffer cache when a process fails.
4: Dynamically register database services with listeners.
5: Monitor sessions for idle session timeout.
6: Cleanup unused temporary segments.
7: Record the checkpoint information in control file.
Which option has the correct functionalities listed for a background process?
A.Checkpoint (CKPT): 1, 2, 5
B.System Monitor (SMON): 1, 6
C.Process Monitor (PMON): 4, 6, 7
D.Database Writer (DBWR): 1, 3, 4
Answer: B
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NO.15 Identify the memory component from which memory may be allocated for:
1. Session memory for the shared server
2: Buffers for I/O slaves
3: Oracle Database Recovery Manager (RMAN) backup and restore operations
A.Large Pool
B.Redo Log Buffer
C.Database Buffer Cache
D.Program Global Area (PGA)
Answer: A
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NO.16 These are points that describe the contents of different memory components:
1. Descriptive information or metadata about schema objects that are queried by using SQL statements
2: The run-time area for data manipulation language (DML) or data definition language (DDL) statements
3: Results of SQL queries and PL/SQL functions
4: Executable forms of SQL cursors, PL/SQL programs, and Java classes
5: The information necessary to reconstruct changes made to the database by a transaction
Which of these will be stored in the Shared Pool if the necessary configurations are done?
A.1 and 2
B.2 and 5
C.1, 3, and 4
D.3, 4, and 5
E.1, 2, 3, and 4
Answer: C
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NO.17 Note the following functionalities of various background processes:
1. Record the checkpoint information in data file headers.
2: Perform recovery at instance startup.
3: Cleanup unused temporary segments.
4: Free the resources used by a user process when it fails.
5: Dynamically register database services with listeners.
6: Monitor sessions for idle session timeout.
Which option has the correct functionalities listed for a background process?
A.Archiver Process (ARCn): 1, 2, 5
B.System Monitor Process (SMON): 1, 4, 5
C.Process Monitor Process (PMON): 4, 5, 6
D.Database Writer Process (DBWn): 1, 3, 4
Answer: C
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NO.18 Observe the information in the columns:
1. The SGAa. Text and parsed forms of all SQL statements
2: The cursor stateb. Run-time memory values for the SQL statement, such as rows retrieved
3: User-session datac. Security and resource usage information
4: The stack spaced. Local variables for the process
Which option has the correct match between the memory areas and their contents?
A.1-c, 2-b, 3-d, 4-a
B.1-c, 2-b, 3-d, 4-a
C.1-a, 2-b, 3-c, 4-d
D.1-a, 2-b, 3-d, 4-c
Answer: C
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NO.19 You have executed this command to change the size of the database buffer cache:
SQL> ALTER SYSTEM SET DB_CACHE_SIZE=2516582;
System altered.
To verify the change in size, you executed this command:
SQL> SHOW PARAMETER DB_CACHE_SIZE
NAME TYPE VALUE
------------------- ----------- ------------------
db_cache_size big integer 4194304
Why is the value set to 4194304 and not to 2516582?
A.because 4194304 is the granule size
B.because 4194304 is the standard block size
C.because 4194304 is the largest nonstandard block size defined in the database
D.because 4194304 is the total size of data already available in the database buffer cache
Answer: A
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NO.20 View the Exhibit and identify the component marked with a question mark.
A.Checkpoint (CKPT)
B.Process Monitor (PMON)
C.Archiver Processes (ARCn)
D.Recoverer Process (RECO)
E.Memory Manager process (MMAN)
Answer: A
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