多选题Which two are the prerequisites to enable Flashback Data Archive?（） (Choose two.)ADatabase must be running in archivelog mode.BAutomatic undo management must be enabled.CUndo retention guarantee must be enabled.DThe tablespace on which the Flashback Da

第1题：

第2题：

User SCOTT wants to back out the transactions on the REGIONS table in his schema. As a DBA, which commands must you execute to enable SCOTT to flash back the transactions?（）

• A、ALTER DATABASE FLASHBACK ON;
• B、GRANT SELECT any transaction TO scott;
• C、GRANT EXECUTE ON dbms_flashback TO scott;
• D、ALTER DATABASE ADD SUPPLEMENTAL LOG DATA;
• E、ALTER TABLESPACE undots1 RETENTION GUARANTEE;
• F、ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (PRIMARY KEY) COLUMNS;

第3题：

第4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5题：

Which are the prerequisites for performing flashback transactions on your database？（）

• A、 Undo retention guarantee for the database must be configured.
• B、 Supplemental log must be enabled for the primary key.
• C、 Supplemental log must be enabled.
• D、 Execute permission on the DBMS_FLASHBACK package must be granted to the user.

第6题：

第7题：

What two are the prerequisites for enabling Flashback Database?（） (Choose two)

• A、The database must be in ARCHIVELOG mode
• B、The database must be in MOUNT EXCLUSIVE mode
• C、The database must be opened in RESTRICTED mode
• D、The database instance must be started in the NOMOUNT state
• E、The database instance must have the keep buffer pool defined

第8题：

第9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10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).