Flash back
Flash back
参考解析
解析：Hash back即闪回，是指病人仿佛又完全身临创伤性事件发生时的情境，重新表现出事件发生时所伴发的各种情感，持续时间可从数秒钟到几天不等。
相关考题：
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;
下面的语句说法正确的是( ) A. 目前Flash 最新的创作平台是Flash MX，播放插件是Flash MX Player。B. 目前Flash 最新的创作平台是Flash MX，播放插件是Flash6.0 Player。C. 目前Flash 最新的创作平台是Flash6.0，播放插件是Flash MX Player。D. 目前Flash 最新的创作平台是Flash 6.0，播放插件是Flash 6.0 Player。
Flash 5支持发布哪几个版本的flash影片?______A．Flash1B．Flash2C．Flash3D．Flash4E．Flash1,Flash2,Flash3,Flash4,Flash5,
There are no boot system commands in a router configuration in NVRAM.What is the fall back sequence that router will use to find an ios during reload?() A.Flash，TFTPserver，ROMB.Flash，NVRAM，ROMC.ROM，NVRAM，TFTPserverD.NVRAM，TFTPserver，ROME.TFTPserver，Flash，NVRAM
在Flash MX 2004中，保存flash文档时，可以选择保存低版本flash打开的文档，那么这个文档版本是（）A、Flash 3B、Flash 4C、Flash 5D、Flash MX
What does the DB_FLASHBACK_RETENTION_TARGET parameter configure?（）A、An upper limit on how far you can flash back the database, depending on the information in the redo logsB、An upper limit on how far you can flash back the database, depending on the information in the undo tablespaceC、The amount of time for which the flashback data is to be kept in the flash recovery area, provided that there is enough spaceD、The amount of time for which the flashback data is guaranteed to be kept in the undo tablespace, provided that there is enough space
A data file became corrupted in your database due to bad sectors on the disk. Because of corruption， you lost all the important tables in that data file. Which method would you use for recovery？（）A、flash back all the tables in the data file， one by oneB、restore the data file to a new location and perform a media recoveryC、flash back the database; there is no need to restore the data fileD、restore the data file from the most recent backup and flash back the database
使用Flash按钮和Flash文本对象时创建的文件类型是（）。A、Flash文件（.fla）B、Flash SWF文件（.swf）C、Flash模板文件（.swt）D、Flash元素（.swc）
以下操作不能使Flash退出元件编辑模式的是：（）A、单击EditEditDocumentB、单击绘图工具箱上的任意一个工具C、单击位于舞台顶端的信息栏左面Back按钮D、单击位于舞台顶端的信息栏左面的场景名
There are no boot system commands in a router configuration in NVRAM.What is the fall back sequence that router will use to find an ios during reload？（）A、Flash，TFTPserver，ROMB、Flash，NVRAM，ROMC、ROM，NVRAM，TFTPserverD、NVRAM，TFTPserver，ROME、TFTPserver，Flash，NVRAM
In your database， you discovered that a tempfile in a locally managed temporary tablespace has been deleted at the operating system level. How would you recover the tablespace？（）A、flash back the databaseB、perform point-in-time recoveryC、perform a full database recoveryD、drop and re-create the tablespaceE、use Recovery Manager （RMAN） to recover the database
On Jan 11， 2005 at 2：30 P.M.， an erroneous update operation modified all the values of column LASTNAME in the EMPLOYEE table in the Scott schema to an empty string. You are the system administrator， and you want to return the original values in the table. To do so， you decided to flash back the table. Which two options can you use to flash back a table？（）A、 by using Oracle Enterprise ManagerB、 by issuing the FLASHBACK TABLE statement at the RMAN promptC、 by issuing the FLASHBACK TABLE statement at the SQL promptD、 by issuing the FLASHBACK TABLE statement at the LSNRCTL prompt
You dropped a schema of a user in an Oracle 10g by mistake. You decide to flash the database back to its previous state to restore the deleted schema. Which process writes the before images of the physical database blocks to the flashback database logs？（）A、 LGWRB、 DBWRC、 MMOND、 RVWR
A data file become corrupted in your database due to bad sectors on the disk. Because of corruption， you lost all the important tables in that data file. Which method would you use for recovery？（）A、 Flash back all the tables in the data file， one by one.B、 Restore the data file to a new location and perform a media recovery.C、 Flash back the database， there is no need to restore the data file.D、 Restore the data file from the most recent backup and flash the database.
User SCOTT wants to back out the transactions on the REGIONS table in his schema. As a DBA, whichcommands must you execute to enable SCOTT to flash back the transactions? （）(Choose four.)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;
Flashback Database is enabled in your Oracle 10g database. One of your database users erroneously purged an important table residing in his schema. The table was purged sometime between 10：00 P.M. and 10：30 P.M. The next day， you decide to flash back the database. Before you flash back the database， you want to ensure that you have all the necessary flashback data. Which dynamic performance view must you use to determine whether you have the required flashback data to recover the purged table？（）A、 V$DATABASEB、 V$UNDOSTATC、 V$FLASHBACK_DATABASE_LOGD、 V$FLASHBACK_DATABASE_STAT
单选题A data file became corrupted in your database due to bad sectors on the disk. Because of corruption， you lost all the important tables in that data file. Which method would you use for recovery？（）Aflash back all the tables in the data file， one by oneBrestore the data file to a new location and perform a media recoveryCflash back the database; there is no need to restore the data fileDrestore the data file from the most recent backup and flash back the database
单选题One disadvantage of using regular dry chemical (sodium bicarbonate) in firefighting is that（）.Ait can break down under high heat and emit noxious fumesBit will decompose under prolonged storage and lose its effectivenessCfire has been known to flash back over the surface of an oil fireDit is ineffective in fighting fires in high-voltage electrical equipment
多选题User SCOTT wants to back out the transactions on the REGIONS table in his schema. As a DBA, whichcommands must you execute to enable SCOTT to flash back the transactions? （）(Choose four.)AALTER DATABASE FLASHBACK ON;BGRANT SELECT any transaction TO scott;CGRANT EXECUTE ON dbms_flashback TO scott;DALTER DATABASE ADD SUPPLEMENTAL LOG DATA;EALTER TABLESPACE undots1 RETENTION GUARANTEE;FALTER DATABASE ADD SUPPLEMENTAL LOG DATA (PRIMARY KEY) COLUMNS;
多选题Which two statements are correct regarding the Oracle Flashback Drop feature？ （）ARecycle bin exists for the tables only in non-SYSTEM， locally managed tablespaces.BYou can flash back a dropped table provided row movement has been enabled on the table.CIf you drop an index before dropping its associated table， then the recovery of the index is not supported when you flash back the dropped table.DWhen you execute the DROP TABLESPACE？ INCLUDING CONTENTS command， the objects in the tablespace are places in the recycle bin.EWhen a dropped table is moved to the recycle bin， only the table is renamed to a system-generated name； its associated objects and constraints are not renamed.FIf you drop a table that is protected by the recycle bin， then associated bitmap-joined indexes and materialized view logs are also stored in the recycle bin.
单选题A data file become corrupted in your database due to bad sectors on the disk. Because of corruption， you lost all the important tables in that data file. Which method would you use for recovery？（）A Flash back all the tables in the data file， one by one.B Restore the data file to a new location and perform a media recovery.C Flash back the database， there is no need to restore the data file.D Restore the data file from the most recent backup and flash the database.
单选题What does the DB_FLASHBACK_RETENTION_TARGET parameter configure？（）A An upper limit on how far you can flash back the database，depending on the information in the redo logsB An upper limit on how far you can flash back the database，depending on the information in the undo tablespaceC The amount of time for which the flashback data is to be kept in the flash recovery area， provided that there is enough spaceD The amount of time for which the flashback data is guaranteed to be kept in the undo tablespace，provided that there is enough space
单选题There are no boot system commands in a router configuration in NVRAM.What is the fall back sequence that router will use to find an ios during reload？（）AFlash，TFTPserver，ROMBFlash，NVRAM，ROMCROM，NVRAM，TFTPserverDNVRAM，TFTPserver，ROMETFTPserver，Flash，NVRAM
多选题On Jan 11， 2005 at 2：30 P.M.， an erroneous update operation modified all the values of column LASTNAME in the EMPLOYEE table in the Scott schema to an empty string. You are the system administrator， and you want to return the original values in the table. To do so， you decided to flash back the table. Which two options can you use to flash back a table？（）Aby using Oracle Enterprise ManagerBby issuing the FLASHBACK TABLE statement at the RMAN promptCby issuing the FLASHBACK TABLE statement at the SQL promptDby issuing the FLASHBACK TABLE statement at the LSNRCTL prompt
单选题You work as a database administrator for Supportcenter.cn. Your database is configured for automatic undo management. UNDO_RETENTION is set to 3 hours. You want to flash back a table that was created last year. How far back can the flashback query go？（）A3 hoursB6 monthsCuntil last yearDuntil last commitEuntil the point when the undotablespacewas refreshedFuntil the database is shut down and the memory erased
单选题You dropped a schema of a user in an Oracle 10g by mistake. You decide to flash the database back to its previous state to restore the deleted schema. Which process writes the before images of the physical database blocks to the flashback database logs？（）A LGWRB DBWRC MMOND RVWR