In which case would you use the Flashback Database feature to perform a recovery？（）

A . Local Naming B . Easy Connect C . External Naming D . Directory Naming

A .  when you need to disable the index usage B .  when you need to change storage options C .  when you need to enable index monitoring D .  when you need to move the index to another tablespace

A . The tables being joined have NOT NULL columns. B . The tables being joined have only matched data. C . The columns being joined have NULL values. D . The tables being joined have only unmatched data. E . The tables being joined have both matched and unmatched data. F . Only when the tables have a primary key/foreign key relationship.

A . Both tables have NULL values. B . You want all unmatched data from one table. C . You want all matched data from both tables. D . You want all unmatched data from both tables. E . One of the tables has more data than the other. F . You want all matched and unmatched data from only one table.

A . when the tablespace is online B . when the tablespace has segments with data in it C . when the tablespace is a default permanent tablespace for the database D . when the tablespace contains a table that is currently being used by transactions E . when the tablespace contains undo data that is needed to rollback an uncommitted transactio

A . when performing export and import using Oracle Data Pump B . when performing backup and recovery operations using Oracle Recovery Manager C . when performing batch processing and bulk loading operation in a data warehouse environment  D . in an online transaction processing （OLTP） system where large number of client sessions are idle most of the time

A . You are working on a database where downtime is not tolerated. B . You are working on a database where downtime can be tolerated. C . You are working on a database that operates in ARCHIVELOG mode. D . You are working on a database that operates in NOARCHIVELOG mode. E . You are working on a database where all the tablespaces are locally managed. F . You are working on a database where control files and redo log files are multiplexed. G . You are working on a database where control files and redo log files are not multiplexed.

A . roll back of large transactions B . roll forward to redo a transaction C . data concurrency for large updates D . read consistency for long-running transactio

A .  backup pieces B .  copies of all the parameter files C .  trace file generated using BACKUP CONTROLFILE TO TRACE D .  control file autobacku

A . when multiple databases are to be registered with the listener B . when DBAs need to connect remotely to start up the database instance C . when users need to connect the database instance using the host naming method D . when the database instance that is to be registered with the listener is configured in shared server mode

A . You find that one of the redo log members in each redo log group is lost. B . You find that a data file that belongs to the USERS tablespace is damaged. C . You find that a data file that belongs to the SYSTEM tablespace is damaged. D . You find that the current redo log group is damaged and is not available for recovery. E . You realized while performing a recovery that an archived redo log file needed for recovery is lost.

A . Local Naming B . Easy Connect C . External Naming D . Directory Naming

A . backup pieces B . control file autobackups C . copies of all the parameter files D . trace file generated using BACKUP CONTROLFILE TO TRACE

A .  NLS_SORT = BINARY B .  NLS_SORT = BINARY_AI C .  NLS_SORT = BINARY_CI D .  NLS_SORT = BINARY_AI_CI E .  Binary sorts are case insensitive and accent insensitive by default

A . Hot backup B . Online backup C . consistent backup D . incremental backup E . inconsistent backu

A . Hot backup B . Online backup C . consistent backup D . incremental backup E . inconsistent backu

A . NLS_SORT = BINARY B . NLS_SORT = BINARY_AI C . NLS_SORT = BINARY_CI D . NLS_SORT = BINARY_AI_CI E . Binary sorts are case insensitive and accent insensitive by default.

A．A medical emergency. B．Police action. C．Traveling. D．All of the above.

A.The vendor has invoiced a price lower than the purchase order price B.The vendor has invoiced a price higher than the purchase order price C.For an item that has been delivered, a higher quantity was invoiced than delivered D.You have posted an invoice incorrectly and cancelled it afterwards