You executed the following query in your database： FROM V$FLASHBACK_DATABASE_LOG; What would you determine from the output？（）A、the time when the last flashback operation in your database was performedB、the time when the first flashback operation in your database was performedC、a list of flashback operations performed in your database using SCN and timeD、the approximate time and the lowest system change number （SCN） to which you can flash back your database
You executed the following query in your database： FROM V$FLASHBACK_DATABASE_LOG; What would you determine from the output？（）
- A、the time when the last flashback operation in your database was performed
- B、the time when the first flashback operation in your database was performed
- C、a list of flashback operations performed in your database using SCN and time
- D、the approximate time and the lowest system change number （SCN） to which you can flash back your database
相关考题：
On Friday at 11:30 am you decided to flash back the database because of a user error that occurred at 8:30 am. Which option must you use to check whether a flashback operation can recover the database to the specified time? （）A. Check the alert log fileB. Query the V$FLASHBACK_DATABASE_LOG viewC. Query the V$RECOVERY_FILE_DEST_SIZE viewD.Query the V$FLASHBACK_DATABASE_STAT viewE. Check the value assigned for the UNDO_RETENTION parameter
You plan to execute the following command to perform a Flashback Database operation in your database:SQL FLASHBACK DATABASE TO TIMESTAMP (SYSDATE －5／24);Which two statements are true about this?() A. The database must have multiplexed redo log filesB. The database must be in the MOUNT state to execute the commandC. The database must be in the NOMOUNT state to execute the commandD. The database must be opened in RESTRICTED mode before this operationE. The database must be opened with the RESETLOGS option after the flashback operation
You want to use the Flashback Transaction Query feature to identify all the changes made to your database within a specific time period. What is a prerequisite for using the Flashback Transaction Query feature？（）A、 You must use automatic undo management in the database.B、 You must configure OMF in your database.C、 You must configure ASM for storing the datafiles.D、 You must multiplex the online redo log file.
Your Oracle Database 10g is online when you execute the following statement： SQLALTER TABLESPACE MY_TABLESPACE FLASHBACK OFF； What is the result of executing this statement if the Flashback Database feature is already enabled in the database？（）A、 The database does not record flashback logs for MY_TABLESPACEB、 The tables residing in MY_TABLESPACE are not protected by the Recycle Bin.C、 All the tablespaces except MY_TABLESPACE can be recovered using Flashback Database feature.D、 None of the flashback technologies， such as Flashback Table， Flashback Transaction Query and Flashback Version Query can be used to recover individual rows within the objects from MY_TABLESPACE
Every Sunday， consistent backups are performed on your database. Because of a user error， you performed an incomplete recovery on Tuesday and opened the database with the RESETLOGS option. A user error occurs again on Thursday， which necessitates an incomplete recovery. Sunday’s backup is the most recent backup available. What would you do in this scenario？（）A、recovery cannot be performed because a backup was not performed after the last incomplete recoveryB、restore all the files from Sunday’s backup， and then perform an incomplete recovery up to the point in time when the user error occurred on ThursdayC、restore all the files from Sunday’s backup， and then recover up to the point in time when the RESETLOGS operation was performed on TuesdayD、restore all the files from Sunday’s backup， and open the database to reset the database to the point in time when the backup was performed on Sunday
You are working as a DBA at NetFx Corporation. You discover that the SCOTT schema is deleted by mistake. You decide to flash the database back to the time when the schema existed. Which view will you query to determine the estimated size of the flashback data that you require for your current target retention？（）A、 V$FLASHBACK_DATABASE_LOGB、 V$FLASHBACK_DATABASE_STATC、 V$DATABASED、 V$UNDOSTAT
You executed the following query： SELECT operation， undo_sql， table_name FROM flashback_transaction_query； Which statement is correct regarding the query output？（）A、 It would return information regarding only the last committed transaction.B、 It would return only the active transactions in all the undo segments in the database.C、 It would return only the committed transactions in all the undo segments in the database.D、 It would return both active and committed transactions in all the undo segments in the database.E、 It would return information regarding the transactions that began and were committed in the last 30 minutes.
You are maintaining your OLTP database in Oracle10g. You are performing the Flashback Transaction Query to find the undo SQL statements that can be used to undo the changes made to the database in the specific time period. Which pseudocolumn will you use to perform the Flashback Transaction Query？（）A、 VERSIONS_STARTSCNB、 VERSIONS_STARTTIMEC、 VERSIONS_XIDD、 VERSIONS_OPERATION
You plan to execute the following command to perform a Flashback Database operation in your database： SQL FLASHBACK DATABASE TO TIMESTAMP （SYSDATE -5/24）； Which two statements are true about this？（）A、 The database must have multiplexed redo log filesB、 The database must be in the MOUNT state to execute the commandC、 The database must be in the NOMOUNT state to execute the commandD、 The database must be opened in RESTRICTED mode before this operationE、 The database must be opened with the RESETLOGS option after the flashback operation
On Friday at 11:30 am you decided to flash back the database because of a user error that occurred at 8:30 am. Which option must you use to check whether a flashback operation can recover the database to the specified time? （）A、Check the alert log fileB、Query the V$FLASHBACK_DATABASE_LOG viewC、Query the V$RECOVERY_FILE_DEST_SIZE viewD、Query the V$FLASHBACK_DATABASE_STAT viewE、Check the value assigned for the UNDO_RETENTION parameter
You can use Oracle Flashback to look at past activity in your database. What are two other characteristics of Oracle Flashback？（）A、Oracle Flashback uses undo information to construct consistent data. B、You can use a cursor opened while using an Oracle Flashback image to perform DML once you deactivate Oracle Flashback in your session. C、You can only use Oracle Flashback view of the data if the required records are still in the online redo log files. D、Oracle Flashback lists the DML that was executed during the period you identify when initiating your session.
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 recoveryB、perform a Flashback Table operation to restore the table to the state it was in two days agoC、perform a Flashback Database operation to restore the database to the state it was in two days agoD、perform Flashback Versions Query and Flashback Transaction Query to determine all the necessary undo SQL statements， and then use them for recovery
You executed the following query in your database： SELECT oldest_flashback_scn， oldest_flashback_time FROM V$FLASHBACK_DATABASE_LOG； What would you determine from the output？（）A、 The time when the last flashback operation in your database was performed.B、 The time when the first flashback operation in your database was performed.C、 A list of flashback operations performed in your database using SCN and time.D、 The approximate time and the lowest system change number （SCN） to which you can flash back your database.
You are required to flashback your database. You want to find the amount of flashback data generated since the database was opened. Which task will you perform to obtain the required information？（）A、 Query the V$FLASHBACK_DATABASE_LOG view.B、 Query the V$FLASHBACK_DATABASE_STAT view.C、 Check the value of the DB_FLASHBACK_RETENTION_TARGET initialization parameter.D、 Query the V$RECOVERY_FILE_DEST view.
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 recoveryB、 perform a Flashback Table operation to restore the table to the state it was in two days agoC、 perform a Flashback Database operation to restore the database to the state it was in two days agoD、 perform Flashback Versions Query and Flashback Transaction Query to determine all the necessary undo SQL statements， and then use them for recovery
You are performing flashback of the ORDERS table in the Scott’s schema because some important data is deleted in the table by mistake. The SCN number was 771513 at the time of deletion. You issued the following statement to perform Flashback Table： SQL FLASHBACK TABLE ORDERS TO SCN 771513； What is the prerequisite to perform Flashback Table？（）A、 You must configure OMF in your database.B、 You must enable block change tracking feature in your database.C、 You must enable ROW MOVEMENT feature on the ORDERS table.D、 You must use the Flashback Version Query before using the Flashback Table feature.
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 recoveryB perform a Flashback Table operation to restore the table to the state it was in two days agoC perform a Flashback Database operation to restore the database to the state it was in two days agoD perform Flashback Versions Query and Flashback Transaction Query to determine all the necessary undo SQL statements， and then use them for recovery
单选题You are maintaining your OLTP database in Oracle10g. You are performing the Flashback Transaction Query to find the undo SQL statements that can be used to undo the changes made to the database in the specific time period. Which pseudocolumn will you use to perform the Flashback Transaction Query？（）A VERSIONS_STARTSCNB VERSIONS_STARTTIMEC VERSIONS_XIDD VERSIONS_OPERATION
单选题You want to use the Flashback Transaction Query feature to identify all the changes made to your database within a specific time period. What is a prerequisite for using the Flashback Transaction Query feature？（）A You must use automatic undo management in the database.B You must configure OMF in your database.C You must configure ASM for storing the datafiles.D You must multiplex the online redo log file.
单选题You are performing flashback of the ORDERS table in the Scott’s schema because some important data is deleted in the table by mistake. The SCN number was 771513 at the time of deletion. You issued the following statement to perform Flashback Table： SQL FLASHBACK TABLE ORDERS TO SCN 771513； What is the prerequisite to perform Flashback Table？（）A You must configure OMF in your database.B You must enable block change tracking feature in your database.C You must enable ROW MOVEMENT feature on the ORDERS table.D You must use the Flashback Version Query before using the Flashback Table feature.
单选题You executed the following query in your database： FROM V$FLASHBACK_DATABASE_LOG; What would you determine from the output？（）Athe time when the last flashback operation in your database was performedBthe time when the first flashback operation in your database was performedCa list of flashback operations performed in your database using SCN and timeDthe approximate time and the lowest system change number （SCN） to which you can flash back your database
单选题You executed the following query： SELECT operation， undo_sql， table_name FROM flashback_transaction_query； Which statement is correct regarding the query output？（）AIt would return information regarding only the last committed transaction.BIt would return only the active transactions in all the undo segments in the database.CIt would return only the committed transactions in all the undo segments in the database.DIt would return both active and committed transactions in all the undo segments in the database.EIt would return information regarding the transactions that began and were committed in the last 30 minutes.
单选题You are required to flashback your database. You want to find the amount of flashback data generated since the database was opened. Which task will you perform to obtain the required information？（）A Query the V$FLASHBACK_DATABASE_LOG view.B Query the V$FLASHBACK_DATABASE_STAT view.C Check the value of the DB_FLASHBACK_RETENTION_TARGET initialization parameter.D Query the V$RECOVERY_FILE_DEST view.
单选题You executed the following query in your database： SELECT oldest_flashback_scn， oldest_flashback_time FROM V$FLASHBACK_DATABASE_LOG； What would you determine from the output？（）A The time when the last flashback operation in your database was performed.B The time when the first flashback operation in your database was performed.C A list of flashback operations performed in your database using SCN and time.D The approximate time and the lowest system change number （SCN） to which you can flash back your database.
单选题On Friday at 11:30 am you decided to flash back the database because of a user error that occurred at 8:30am. Which option must you use to check whether a flashback operation can recover the database to the specified time?（）ACheck the alert log fileBQuery the V$FLASHBACK_DATABASE_LOG viewCQuery the V$RECOVERY_FILE_DEST_SIZE viewDQuery the V$FLASHBACK_DATABASE_STAT viewECheck the value assigned for the UNDO_RETENTION parameter
单选题Your Oracle Database 10g is online when you execute the following statement： SQLALTER TABLESPACE MY_TABLESPACE FLASHBACK OFF； What is the result of executing this statement if the Flashback Database feature is already enabled in the database？（）A The database does not record flashback logs for MY_TABLESPACEB The tables residing in MY_TABLESPACE are not protected by the Recycle Bin.C All the tablespaces except MY_TABLESPACE can be recovered using Flashback Database feature.D None of the flashback technologies， such as Flashback Table， Flashback Transaction Query and Flashback Version Query can be used to recover individual rows within the objects from MY_TABLESPACE
单选题You are working as a DBA at NetFx Corporation. You discover that the SCOTT schema is deleted by mistake. You decide to flash the database back to the time when the schema existed. Which view will you query to determine the estimated size of the flashback data that you require for your current target retention？（）A V$FLASHBACK_DATABASE_LOGB V$FLASHBACK_DATABASE_STATC V$DATABASED V$UNDOSTAT