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（391）When setting up the Flashback Data Archive,which of these key parameters are required?(Choose all that apply.)A. Tablespace nameB. Storage quotaC. RetentionD. Table nameE. Create a default archive答案：（A、C）解析：《Advanced Application Developer's Guide》 1...

（390）Which of these are valid Flashback Database recovery point parameters?(Choose all that apply.)A. SCNB. TimestampC. Named recovery pointD. Transaction IDE. Session ID答案：（A、B、C）

（389）The writes the Flashback Database logs in the flash recovery area.A. FLSHB. FLDBC. RVWRD. RVRWE. FBDA答案：（C）解析：RVWR, recovery writer process,将闪回数据写到快速恢复区的闪回日志

（388）Flashback Database relies on which technologies to recover to a point in time?A. Flashback Data ArchiveB. Flashback logs in the flash recovery areaC. Flashback Undo tablespaceD. RMAN command lineD. None of the above答案：（B）解析：Flashback database依赖于闪回...

（387）Which method could be utilized to identify both DML operations and the SQL statements needed to undo those operations for a specific schema owner?(Choose all that apply.)A. Query DBA_TRANSACTION_QUERY for TABLE_NAME,OPERATION,and UNDO_SQL.Limit rows by START_SCN and TABLE_OWNER.B. Quer...

（386）You have just performed a FLASHBACK TABLE operation using the following command: flashback table employees to scn 123456;The employees table has triggers associated with it.Which of the following statements is true regarding the state of the triggers during the Flashback Table operatio...

（385）Which of the following statements is true regarding implementing a Flashback Table recovery?A. An SCN is never used to perform a Flashback Table recovery.B. If a significant number of changes have been made to the table,row movement must be enabled.C. The tablespace must be offline...

（384）Which of the following statements is true regarding the VERSIONS BETWEEN clause?A. The VERSIONS BETWEEN clause may be used in DML statements.B. The VERSIONS BETWEEN clause may be used in DDL statements.C. The VERSIONS BETWEEN clause may not be used to query past DDL changes to tabl...

（383）At the request of a user,you issue the following command to restore a dropped table:flashback table"BIN$F2JFfMq8Q5unbC0ceE9eJg==$0"to before drop;Later,the user notifies you that the data in the table seems to be very old and out of date.What might be the problem?A. Because a p...

（382）Which of the following can be used in conjunction with a Flashback Versions Query to filter the results?(Choose all that apply.)A. A range of SCN valuesB. A list of SCN valuesC. A starting and ending timestampD. Minimum and maximum sequence valuesE. A list of sequence value...

（381）Which pseudocolumn could you use to identify a unique row in a Flashback Versions Query?A. XIDB. VERSIONS_PKC. VERSIONS_XIDD. VERSIONS_UNIQUE答案：（C）解析：《SQL Language Reference》Version Query伪例

（380）Which of the following statements best describes Flashback Versions Query?A. Flashback Versions Query is used to make changes to multiple versions of data that existed between two points in time.B. Flashback Versions Query is used to view all version changes on rows that existed betwee...

（379）Users notify you that their application is failing every time they try to add new records.Because of poor application design,the actual ORA error message is unavailable.What might be the problem?(Choose the best answers.)A. The application user has exceeded their undo quota.B. ...

（378）In order to perform Flashback Transaction Query operations,which of these steps are required?(Choose all that apply.)A. Ensure that database is running with version 10.1 compatibility.B. Enable Flashback Logging.C. Enable Supplemental Logging.D. Ensure that the database is runn...

（377）AUM has been retaining about 15 minutes worth of undo.You want to double the retention period,but not at the expense of new transactions failing.You decide to alter the system to set the parameter UNDO_RETENTION=18000.However,AUM still retains only about 15 minutes worth of undo.What i...

（376）A user named Arren is executing this query:select table_name,operation,undo_sql from flashback_transaction_query t,(select versions_xid as xid from employees versions between scn minvalue and maxvaluewhere employee_id=123) e where t.xid = e...

（375）Over the course of a day,a department performed multiple DML statements(inserts,updates,deletes) on multiple rows of data in multiple tables.The manager would like a report showing the time,table name,and DML type for all changes that were made.Which Flashback technology would be the b...

（374）Which of the following statements are true regarding the Recycle Bin?(Choose all that apply.)A. The Recycle Bin is a physical storage area for dropped objects.B. The Recycle Bin is a logical container for dropped objects.C. The Recycle Bin stores the results of a Flashback Drop ope...

（373）Which of the following Oracle features utilize the undo tablespace?(Choose all that apply)A. Flashback QueryB. Flashback DropC. Flashback TableD. Flashback DatabaseE. Transaction ProcessingF. Recycle Bin答案：（A、C、E）