单选题To clean up old records that are in a Flashback Data Archive and are past the retention period， what must the DBA do？（）ATRUNCATE the archive table.BDROP the Flashback Data Archive.CNothing；expired rows are automatically removed.DNothing；expired rows ar

第1题：

You enabled Flashback Data Archive on the INVENTORY table.Which DDL operation is supported on the table after enabling Flashback Data Archive?（）

• A、Drop the table.
• B、Partition the table
• C、Truncate the table.
• D、Add a column to the table.
• E、Rename a column in the table.

第2题：

You need to maintain a record of all transactions on some tables for at least three years. Automatic undo management is enabled for the database. What must you do accomplish this task？（）

• A、 Enable supplemental logging for the database.
• B、 Specify undo retention guarantee for the database
• C、 Create Flashback Data Archive in the tablespace where the tables are stored.
• D、 Create Flashback Data Archive and enable Flashback Data Archive for specific tables

第3题：

Which are the two prerequisites before setting up Flashback Data Archive? （）(Choose two.)

• A、Flash recovery area must be defined
• B、Undo retention guarantee must be enabled.
• C、Database must be running in archivelog mode.
• D、Automatic undo management must be enabled.
• E、The tablespace in which the Flashback Data Archive is created must have automatic segment space Management (ASSM).

第4题：

Which two are the prerequisites to enable Flashback Data Archive?（） (Choose two.)

• A、Database must be running in archivelog mode.
• B、Automatic undo management must be enabled.
• C、Undo retention guarantee must be enabled.
• D、The tablespace on which the Flashback Data Archive is created must be managed with Automatic Segment Space Management (ASSM).

第5题：

What is the implication of this command?（）

• A、The command produces an error because the retention time cannot be reduced. 
• B、All historical data is retained but the subsequent flashback data archives are maintained for only three years. 
• C、All historical data is purged and the new flashback data archives are maintained for three years. 
• D、All historical data older than three years is purged from the flashback archive FLA1. 

第6题：

Note the output of the following query；   SQL> SELECT flashback_archieve_name， status FROM dba_flashback_archieve； FLASHBACK_ARCHIEVE_NAME STATUS FLA1   You executed the following command to enable Flashback Data Archive on the EXCHANGB_PATE table：   ALTER TABLE exchange_rate FLASHBACK ARCHIEVE；   What is the outcome of this command？（）  

• A、 The table uses the default Flashback Data Archive.
• B、 The Flashback Data Archive Is created In the SYSAUX tablespace.
• C、 The Flashback Data Archive is created in the same tablespace where the tables are stored.
• D、 The command generates an error because no flashback Data Archive name is specified and there is no default Flashback Data Achieve.

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第13题：

You enabled Flashback Data Archive on the INVENTORY table. Which DDL operation is supported on the table after enabling Flashback Data Archive？（）  

• A、 Drop the table.
• B、 Partition the table.
• C、 Truncate the table.
• D、 Add a column to the table.
• E、 Rename a column in the table.

第14题：

You must track all transactions that modify certain tables in the sales schema for at least three years. Automatic undo management is enabled for the database with a retention of one day. Which two must you do to track the transactions?（）

• A、Enable supplemental logging for the database.
• B、Specify undo retention guarantee for the database.
• C、Create a Flashback Data Archive in the tablespace where the tables are stored.
• D、Create a Flashback Data Archive in any suitable tablespace.
• E、Enable Flashback Data Archiving for the tables that require tracking

第15题：

You want to track and store all transactional changes to a table over its lifetime. To accomplish this task, you enabled Flashback Data Archive with the retention of 5 years. After some time, the business requirement changed and you are asked to change the retention period from 5 years to 3 years. To accomplish this, you issued the following command: ALTER FLASHBACK ARCHIVE fla1 MODIFY RETENTION 3 YEARS; What is the outcome of this command?（）

• A、The command produces an error because the retention period cannot be reduced
• B、All historical data older than 3 years is purged from the flashback archive FLA1
• C、All historical data is retained but the subsequent flashback data archives are maintained for only 3 years
• D、All historical data is transferred to flashback logs and the flashback archive is refreshed to set a new retention time

第16题：

You want to track and store all transactional changes to a table over its lifetime. To accomplish this task， you enabled Flashback Data Archive with the retention of 5 years. After some time， the business requirement changed and you were asked to change the retention from 5 years to 3 years. To accomplish this， you issued the following command：   ALTER FLASHBACK ARCHIVE fla1 MODIFY RETENTION 3 YEAR；   What is the implication of this command？（）

• A、 The command produces an error because the retention time cannot be reduced.
• B、 All historical data is retained but the subsequent flashback data archives are maintained for only three years.
• C、 All historical data is purged and the new flashback data archives are maintained for three years.
• D、 All historical data older than three years is purged from the flashback archive FLA1.

第17题：

To clean up old records that are in a Flashback Data Archive and are past the retention period， what must the DBA do？（）  

• A、 TRUNCATE the archive table.
• B、 DROP the Flashback Data Archive.
• C、 Nothing；expired rows are automatically removed.
• D、 Nothing；expired rows are moved to an archive table.
• E、 Delete entries from the archive where the metadata date retained is greater than the retention period.

第18题：

Which two are the prerequisites to enable Flashback Data Archive？（）

• A、 Database must be running in archivelog mode.
• B、 Automatic undo management must be enabled.
• C、 Undo retention guarantee must be enabled.
• D、 The tablespace on which the Flashback Data Archive is created must be managed with Automatic Segment  Space Management （ASSM）.

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