单选题You are working on an online transaction processing （OLTP） system. You notice that a PL/SQL procedure got executed twice at 2） 00 p.m. This has incorrectly updated the EMP_SAL table. How would you revert the table to its state at 2） 00 p.m.？（）A Perform

题目
单选题
You are working on an online transaction processing （OLTP） system. You notice that a PL/SQL procedure got executed twice at 2） 00 p.m. This has incorrectly updated the EMP_SAL table. How would you revert the table to its state at 2） 00 p.m.？（）
A

Perform point-in-time recovery to 2： 00 p.m.

B

Use Flashback Table feature to revert the changes.

C

Restore the entire database from the recent backup and open it.

D

Issue the rollback statement with system change number （SCN）.

相似考题

1.You are the administrator of a SQL Server 2000 computer. You create a Data Transformation Services (DTS) package. The package is stored as a local package on the server. The package exports data from an online transaction processing (OLTP) database system to an online analytical processing (OLAP) database system that is located on a second SQL Server 2000 computer.You want the package to execute automatically each evening at 8:00 P.M. What should you do?A．Use SQL Server Enterprise Manager to create a new job Create a CmdExec job step that runs the dtsrun utility Schedule the job to run each night at 8:00 P.M.B．Use SQL Server Enterprise Manager to create a new job Create a Transact-SQL job step to query data from the OLTP database Create a second Transact-SQL job step to launch the DTS package Schedule the job to run each night at 8:00 P.M.C．Create a batch file that runs the dtsrun utility Use the Microsoft Windows Task Scheduler to run the job each night at 8:00 P.M. Configure the Windows Task Scheduler to use the local system accountD．Move the DTS package to the repository Configure the SQLServerAgent service on the OLAP database server to update the package each night at 8:00 P.M.

2.Your system performs heavy transaction processing between 8：00 A.M. and 5：00 P.M. but runs batch processing and reports after that. You decide to create a separate resource plan to govern resource allocation for each time period. Which scheduler object will you use to switch automatically between the two resource plans？（）  A、 WindowB、 ProgramC、 Job_ClassD、 Window group

3. You suspect unauthorized data manipulation language （DML） operations on a particular table. You want to track users who are performing the transactions and the values used in the transactions. Also， you plan to transfer these values to another table for analysis.  How would you achieve this？（）A、by using triggersB、by using external tablesC、by using anonymous PL/SQL blocksD、by auditing all DML operations on the table

4. While designing the database for one of your online transaction processing （OLTP） applications， you want to achieve the following：  a） high availability of data  b） faster primary key access to the table data  c） compact storage for the table  Which type of tables would you use to achieve these objectives？（）A、heap tablesB、object tablesC、partitioned tablesD、index­organized tables （IOTs）

更多“单选题You are working on an online transaction processing （OLTP） system. You notice that a PL/SQL procedure got executed twice at 2） 00 p.m. This has incorrectly updated the EMP_SAL table. How would you revert the table to its state at 2） 00 p.m.？（）A Perform”相关问题

  • 第1题：

    You are working in an online transaction processing (OLTP) environment. You use the FLASHBACKTABLE command to flash back the CUSTOMERS table. Before executing the FLASHBACK TABLE command, the system change number (SCN) was 663571. After flashing back the CUSTOMERS table, you realize that the table is not in the correct state. Now, you need to reverse the effects of the FLASHBACK TABLE command. Which is the fastest and the most efficient option to reverse the effects of the FLASHBACK TABLE command?（）

    • A、Restore the backup control file and open the database with RESETLOGS option.
    • B、Perform point-in-time recovery because flashback cannot be performed again on this table
    • C、Execute the FLASHBACK DATABASE statement to retrieve the CUSTOMERS table as it was at SCN 663571
    • D、Execute another FLASHBACK TABLE statement to retrieve the CUSTOMERS table as it was at SCN 663571

    正确答案:D

  • 第2题：

    In one of your online transaction processing （OLTP） applications， users are manipulating and querying a database table simultaneously. From the Segment Advisor， you find that one of the tables is highly fragmented and you want to shrink the table immediately without affecting the currently active queries.  Which option would you use with the ALTER TABLE command to achieve this objective？（）

    • A、REBUILD
    • B、CASCADE
    • C、TRUNCATE
    • D、ROW MOVEMENT
    • E、SHRINK SPACE COMPACT
    • F、SHRINK SPACE CASCADE

    正确答案:E

  • 第3题：

    You are working in an online transaction processing （OLTP） environment. You used the FLASHBACK TABLE command to flash back the CUSTOMERS table. Before executing the FLASHBACK TABLE command， the System Change Number （SCN） was 663571. After flashing back the CUSTOMERS table， you realize that the table is not in the correct state and the resultant changes are not what you had desired. So， you need to reverse the effects of the FLASHBACK TABLE command while ensuring that：  a） No other user data in the database is affected.  b） The operation takes the minimum possible time.  Which option would you choose？（）

    • A、use the ROLLBACK command with SCN 663571
    • B、perform Flashback Transaction Query with SCN 663571
    • C、execute the FLASHBACK DATABASE statement to retrieve the CUSTOMERS table as it was at SCN 663571
    • D、execute another FLASHBACK TABLE statement to retrieve the CUSTOMERS table as it was at SCN 663571

    正确答案:D

  • 第4题：

    You took the DATA1 tablespace offline at 10：00 A.M. At 12：30 P.M.， a schema of a user is dropped and purged from the Recycle Bin. You noticed this at 2：00 P.M. and decided to perform an incomplete recovery.  Which datafiles will you recover？（）

    • A、 all the datafiles in the database
    • B、 the datafiles associated with the SYSTEM tablespace
    • C、 the datafiles associated with the DATA1 tablespace
    • D、 all the datafiles in the database except those associated with the DATA1 tablespace

    正确答案:D

  • 第5题：

    A user performs an update on a table. Shortly after committing the transaction， they realize that they had an error in their WHERE clause causing the wrong rows to be updated. Which Flashback option would allow you to undo this transaction and restore the table to its previous state？（）

    • A、 Flashback Drop
    • B、 Flashback Query
    • C、 Flashback Versions Query
    • D、 Flashback Transaction Query
    • E、 Flashback Table

    正确答案:E

  • 第6题：

    单选题
    You work as a database administrator at Certkiller .com. You are working in an online transaction processing （OLTP） environment. You realize that the salary for an employee， John， has been accidentally modified in the EMPLOYEEStable. Two days ago， the data was in the correct state. Flashback logs generated during last two days are available in the flash recovery area. Which option would you choose to bring the data to the correct state while ensuring that no other data in the same table is affected？（）
    A

     perform point-in-time recovery

    B

     perform a Flashback Table operation to restore the table to the state it was in two days ago

    C

     perform a Flashback Database operation to restore the database to the state it was in two days ago

    D

     perform Flashback Versions Query and Flashback Transaction Query to determine all the necessary undo SQL statements， and then use them for recovery


    正确答案： B
    解析： 暂无解析

  • 第7题：

    单选题
    You are working on an Oracle Database 10g database that operates in the ARCHIVELOG mode. At 06：00 p.m.， you discovered that a table in the SYSTEM tablespace that does not belong to the data dictionary was dropped at 03：00 p.m. What would you do to recover the table？（）
    A

     use the Flashback Transaction Query feature to identify the relevant SQL statement and use it to undrop the table

    B

     restore the entire database from the most recent backup and open it

    C

     recover the table by using the Flashback Table feature

    D

     perform point-in-time recovery to recover the table


    正确答案： B
    解析： 暂无解析

  • 第8题：

    单选题
    In one of your online transaction processing （OLTP） applications， users are manipulating and querying a database table simultaneously. From the Segment Advisor， you find that one of the tables is highly fragmented and you want to shrink the table immediately without affecting the currently active queries. Which option would you use with the ALTER TABLE command to achieve this objective？（）
    A

     REBUILD

    B

     CASCADE

    C

     TRUNCATE

    D

     ROW MOVEMENT

    E

     SHRINK SPACE COMPACT

    F

     SHRINK SPACE CASCADE


    正确答案： B
    解析： 暂无解析

  • 第9题：

    单选题
    You are working in an online transaction processing （OLTP） environment. You used the FLASHBACK TABLE command to flash back the CUSTOMERS table. Before executing the FLASHBACK TABLE command， the System Change Number （SCN） was 663571. After flashing back the CUSTOMERS table， you realize that the table is not in the correct state and the resultant changes are not what you had desired. So， you need to reverse the effects of the FLASHBACK TABLE command while ensuring that：  a） No other user data in the database is affected.  b） The operation takes the minimum possible time.  Which option would you choose？（）
    A

     Use ROLLBACK command with SCN 663571.

    B

     Perform Flashback Transaction Query with SCN 663571.

    C

     Execute the FLASHBACK DATABASE statement to retrieve the CUSTOMERS table as it was at SCN 663571.

    D

     Execute another FLASHBACK TABLE statement to retrieve the CUSTOMERS table as it was at SCN 663571.


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    Your system performs heavy transaction processing between 8：00 A.M. and 5：00 P.M. but runs batch processing and reports after that. You decide to create a separate resource plan to govern resource allocation for each time period. Which scheduler object will you use to switch automatically between the two resource plans？（）
    A

     Window

    B

     Program

    C

     Job_Class

    D

     Window group


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    In one of your online transaction processing （OLTP） applications， users are manipulating and querying a database table simultaneously. From the Segment Advisor， you find that one of the tables is highly fragmented and you want to shrink the table immediately without affecting the currently active queries.  Which option would you use with the ALTER TABLE command to achieve this objective？（）
    A

    REBUILD

    B

    CASCADE

    C

    TRUNCATE

    D

    ROW MOVEMENT

    E

    SHRINK SPACE COMPACT

    F

    SHRINK SPACE CASCADE


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    You are maintaining your database in ARCHIVELOG mode. An important table， SCOTT.EMPLOYEE， is dropped and purged from the Recycle Bin on Monday at 2：00 P.M. You do not use RMAN to perform backups. You performed the last full user-managed backup at 9：00 P.M. on Sunday.  How will you recover the dropped table， SCOTT.EMPLOYEE？（）
    A

     by using the Flashback Table feature

    B

     by using the Flashback Database feature

    C

     by performing incomplete recovery using RMAN utility

    D

     by performing incomplete recovery using user-managed recovery


    正确答案： C
    解析： 暂无解析

  • 第13题：

    You are working in an online transaction processing （OLTP） environment. You realize that the salary for an employee， John， has been accidentally modified in the EMPLOYEES table. Two days ago， the data was in the correct state. Flashback logs generated during last two days are available in the flash recovery area.  Which option would you choose to bring the data to the correct state while ensuring that no other data in the same table is affected？（）

    • A、perform point-in-time recovery
    • B、perform a Flashback Table operation to restore the table to the state it was in two days ago
    • C、perform a Flashback Database operation to restore the database to the state it was in two days ago
    • D、perform Flashback Versions Query and Flashback Transaction Query to determine all the necessary undo SQL statements， and then use them for recovery

    正确答案:D

  • 第14题：

    You are working on an online transaction processing （OLTP） system. You notice that a PL/SQL procedure got executed twice at 2） 00 p.m. This has incorrectly updated the EMP_SAL table. How would you revert the table to its state at 2） 00 p.m.？（）

    • A、Perform point-in-time recovery to 2： 00 p.m.
    • B、Use Flashback Table feature to revert the changes.
    • C、Restore the entire database from the recent backup and open it.
    • D、Issue the rollback statement with system change number （SCN）.

    正确答案:B

  • 第15题：

    You work as a database administrator at Certkiller .com. You are working in an online transaction processing （OLTP） environment. You realize that the salary for an employee， John， has been accidentally modified in the EMPLOYEEStable. Two days ago， the data was in the correct state. Flashback logs generated during last two days are available in the flash recovery area. Which option would you choose to bring the data to the correct state while ensuring that no other data in the same table is affected？（）

    • A、 perform point-in-time recovery
    • B、 perform a Flashback Table operation to restore the table to the state it was in two days ago
    • C、 perform a Flashback Database operation to restore the database to the state it was in two days ago
    • D、 perform Flashback Versions Query and Flashback Transaction Query to determine all the necessary undo SQL statements， and then use them for recovery

    正确答案:D

  • 第16题：

    You are working in an online transaction processing (OLTP) environment. You use the FLASHBACKTABLE command to flash back the CUSTOMERS table. Before executing the FLASHBACK TABLE command, the system change number (SCN) was 663571. After flashing back the CUSTOMERS table, you realize that the table is not in the correct state. Now, you need to reverse the effects of the FLASHBACK TABLE command. Which is the fastest and the most efficient option to reverse the effects of the FLASHBACK TABLE command?（）

    • A、Restore the backup control file and open the database with RESETLOGS option.
    • B、Perform point-in-time recovery because flashback cannot be performed again on this table
    • C、Execute the FLASHBACK DATABASE statement to retrieve the CUSTOMERS table as it was at SCN 663571
    • D、Execute another FLASHBACK TABLE statement to retrieve the CUSTOMERS table as it was at SCN 663571

    正确答案:D

  • 第17题：

    You are working on an Oracle Database 10g database that operates in the ARCHIVELOG mode. At 06：00 p.m.， you discovered that a table in the SYSTEM tablespace that does not belong to the data dictionary was dropped at 03：00 p.m. What would you do to recover the table？（）

    • A、 use the Flashback Transaction Query feature to identify the relevant SQL statement and use it to undrop the table
    • B、 restore the entire database from the most recent backup and open it
    • C、 recover the table by using the Flashback Table feature
    • D、 perform point-in-time recovery to recover the table

    正确答案:D

  • 第18题：

    单选题
    You are working in an online transaction processing （OLTP） environment. You used the FLASHBACK TABLE command to flash back the CUSTOMERS table. Before executing the FLASHBACK TABLE command， the System Change Number （SCN） was 663571. After flashing back the CUSTOMERS table，you realize that the table is not in the correct state and the resultant changes are not what you had desired. So， you need to reverse the effects of the FLASHBACK TABLE command while ensuring that：  a） No other user data in the database is affected.  b） The operation takes the minimum possible time.  Which option would you choose？（）
    A

    use the ROLLBACK command with SCN 663571

    B

    perform Flashback Transaction Query with SCN 663571

    C

    execute the FLASHBACK DATABASE statement to retrieve the CUSTOMERS table as it was at SCN 663571

    D

    execute another FLASHBACK TABLE statement to retrieve the CUSTOMERS table as it was at SCN 663571


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    A user performs an update on a table. Shortly after committing the transaction， they realize that they had an error in their WHERE clause causing the wrong rows to be updated. Which Flashback option would allow you to undo this transaction and restore the table to its previous state？（）
    A

     Flashback Drop

    B

     Flashback Query

    C

     Flashback Versions Query

    D

     Flashback Transaction Query

    E

     Flashback Table


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    You are working in an online transaction processing (OLTP) environment. You use the FLASHBACKTABLE command to flash back the CUSTOMERS table. Before executing the FLASHBACK TABLE command, the system change number (SCN) was 663571. After flashing back the CUSTOMERS table, you realize that the table is not in the correct state. Now, you need to reverse the effects of the FLASHBACK TABLE command. Which is the fastest and the most efficient option to reverse the effects of the FLASHBACK TABLE command?（）
    A

    Restore the backup control file and open the database with RESETLOGS option.

    B

    Perform point-in-time recovery because flashback cannot be performed again on this table

    C

    Execute the FLASHBACK DATABASE statement to retrieve the CUSTOMERS table as it was at SCN 663571

    D

    Execute another FLASHBACK TABLE statement to retrieve the CUSTOMERS table as it was at SCN 663571


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    You are working in an online transaction processing （OLTP） environment. You realize that the salary for an employee， John， has been accidentally modified in the EMPLOYEES table. Two days ago， the data was in the correct state. Flashback logs generated during last two days are available in the flash recovery area.  Which option would you choose to bring the data to the correct state while ensuring that no other data in the same table is affected？（）
    A

    perform point-in-time recovery

    B

    perform a Flashback Table operation to restore the table to the state it was in two days ago

    C

    perform a Flashback Database operation to restore the database to the state it was in two days ago

    D

    perform Flashback Versions Query and Flashback Transaction Query to determine all the necessary undo SQL statements， and then use them for recovery


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    While designing the database for one of your online transaction processing （OLTP） applications， you want to achieve the following：  a） high availability of data  b） faster primary key access to the table data  c） compact storage for the table  Which type of tables would you use to achieve these objectives？（）
    A

    heap tables

    B

    object tables

    C

    partitioned tables

    D

    index-organized tables （IOTs）


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    You are working on an online transaction processing （OLTP） system. You notice that a PL/SQL procedure got executed twice at 2） 00 p.m. This has incorrectly updated the EMP_SAL table. How would you revert the table to its state at 2） 00 p.m.？（）
    A

    Perform point-in-time recovery to 2： 00 p.m.

    B

    Use Flashback Table feature to revert the changes.

    C

    Restore the entire database from the recent backup and open it.

    D

    Issue the rollback statement with system change number （SCN）.


    正确答案： A
    解析： 暂无解析

  • 第24题：

    单选题
    You took the DATA1 tablespace offline at 10：00 A.M. At 12：30 P.M.， a schema of a user is dropped and purged from the Recycle Bin. You noticed this at 2：00 P.M. and decided to perform an incomplete recovery.  Which datafiles will you recover？（）
    A

     all the datafiles in the database

    B

     the datafiles associated with the SYSTEM tablespace

    C

     the datafiles associated with the DATA1 tablespace

    D

     all the datafiles in the database except those associated with the DATA1 tablespace


    正确答案： D
    解析： 暂无解析

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