Free Download Oracle 1Z0-053 VCE Test Engine Full Version Now (281-290)

QUESTION 281
Which pseudocolumn could you use to identify a unique row in a Flashback Versions Query?

A.    XID
B.    VERSIONS_PK
C.    VERSIONS_XID
D.    VERSIONS_UNIQUE

Answer: C

QUESTION 282
Which of the following can be used in conjunction with a Flashback Versions Query to filter the results? (Choose all that apply.)

A.    A range of SCN values
B.    A list of SCN values
C.    A starting and ending timestamp
D.    Minimum and maximum sequence values
E.    A list of sequence values

Answer: AC

QUESTION 283
At the request of a user, you issue the following command to restore a dropped table: flashback table “BIN$F2JFfMq8Q5unbC0ceE9eJg==$0” to before drop; Later, the user notifies you that the data in the table seems to be very old and out of date. What might be the problem?

A.    Because a proper range of SCNs was not specified, the wrong data was restored.
B.    A proper range of timestamps was not specified, so the wrong data was restored.
C.    A previous Flashback Drop operation had been performed, resulting in multiple versions of the table
being stored in the Recycle Bin.
D.    Either option A or B could be correct. Not enough information was provided to determine which.
E.    None of the above.

Answer: C

QUESTION 284
Which of the following statements is true regarding the VERSIONS BETWEEN clause?

A.    The VERSIONS BETWEEN clause may be used in DML statements.
B.    The VERSIONS BETWEEN clause may be used in DDL statements.
C.    The VERSIONS BETWEEN clause may not be used to query past DDL changes to tables.
D.    The VERSIONS BETWEEN clause may not be used to query past DML statements to tables.

Answer: C

QUESTION 285
Which of the following statements is true regarding implementing a Flashback Table recovery?

A.    An SCN is never used to perform a Flashback Table recovery.
B.    If a significant number of changes have been made to the table, row movement must be enabled.
C.    The tablespace must be offline before performing a Flashback Table recovery.
D.    Flashback Table recovery is completely dependent on the availability of undo data in the undo tablespace.

Answer: D

QUESTION 286
You have just performed a FLASHBACK TABLE operation using the following command:
flashback table employees to scn 123456;
The employees table has triggers associated with it. Which of the following statements is true regarding the state of the triggers during the Flashback Table operation?

A.    All the triggers are disabled.
B.    All the triggers are enabled by default.
C.    Enabled triggers remain enabled and disabled triggers remain disabled.
D.    Triggers are deleted when a Flashback Table operation is performed.

Answer: A

QUESTION 287
Which method could be utilized to identify both DML operations and the SQL statements needed to undo those operations for a specific schema owner? (Choose all that apply.)

A.    Query DBA_TRANSACTION_QUERY for TABLE_NAME, OPERATION, and UNDO_SQL. Limit
rows by START_SCN and TABLE_OWNER.
B.    Query FLASHBACK_TRANSACTION_QUERY for TABLE_NAME, OPERATION, and UNDO_SQL.
Limit rows by START_SCN and TABLE_OWNER.
C.    Query FLASHBACK_TRANSACTION_QUERY for TABLE_NAME, OPERATION, and UNDO_SQL.
Limit rows by START_TIMESTAMP and TABLE_OWNER.
D.    Query DBA_TRANSACTION_QUERY for TABLE_NAME, OPERATION, and UNDO_SQL. Limit rows
by START_SCN and TABLE_OWNER.

Answer: BC

QUESTION 288
Flashback Database relies on which technologies to recover to a point in time?

A.    Flashback Data Archive
B.    Flashback logs in the flash recovery area
C.    FlashbUndo tablespace
D.    RMAN command line
E.    None of the above

Answer: B

QUESTION 289
The _______ writes the Flashback Database logs in the flash recovery area.

A.    FLSH
B.    FLDB
C.    RVWR
D.    RVRW
E.    FBDA

Answer: C

QUESTION 290
Which of these are valid Flashback Database recovery point parameters? (Choose all that apply.)

A.    SCN
B.    Timestamp
C.    Named recovery point
D.    Transaction ID
E.    Session ID

Answer: ABC

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