多选题Which two operations require undo data？（）Acommitting a transactionBrolling back a transactionCrecovering from failed transactionsDrecording a transaction to redo log filesErolling forward during instance recovery
多选题
Which two operations require undo data？（）
A
committing a transaction
B
rolling back a transaction
C
recovering from failed transactions
D
recording a transaction to redo log files
E
rolling forward during instance recovery
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ENCRYPT_TS is an encrypted tablespace that contains tables with data. Which statement is true regarding the effect of queries and data manipulation language (DML) statements on the encrypted data in the tables?（）A. The data is decrypted during SORT and JOIN operations.B. The data remains encrypted when it is read into memory.C. The data remains encrypted when it is stored in the redo logs.D. The data remains encrypted in the UNDO tablespace provided that the UNDO tablespace was created with the encryption option enabled.
Which two are the prerequisites to enable Flashback Data Archive?() (Choose two.) A. Database must be running in archivelog mode.B. Automatic undo management must be enabled.C. Undo retention guarantee must be enabled.D. The tablespace on which the Flashback Data Archive is created must be managed with Automatic Segment Space Management (ASSM).
Which are the two prerequisites before setting up Flashback Data Archive? ()(Choose two.) A. Flash recovery area must be definedB. 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).
Which two client requests are captured during database replay Capture?() (Choose two) A. Flashback queriesB. Shared server requestsC. Login and logoff activities of sessionsD. Direct path load of data from external files by using utilities such as SQL *loaderE. Data definition language (DDL) and data manipulation language (DML) operations
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
Which are the two prerequisites before setting up Flashback Data Archive? （）(Choose two.)A、Flash recovery area must be definedB、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).
Which two operations require undo data？（）A、committing a transactionB、rolling back a transactionC、recovering from failed transactionsD、recording a transaction to redo log filesE、rolling forward during instance recovery
Which two statements are true regarding transactions in an Oracle database（）A、Multiple transactions can use the same undo segment.B、A transaction is assigned an undo segment when it is started.C、More than one transaction cannot share the same extent in the undo tablespace.D、The transactions use system undo segment to store undo data if all the segments in the undo tablespaceare used.
Which three operations require undo data（）A、committing a transactionB、flashing back a transactionC、recovering a failed transactionD、running a read-consistent queryE、changing a tablespace status from READ ONLY to READ WRITE
Which two client requests are captured during database replay Capture?（） (Choose two)A、Flashback queriesB、Shared server requestsC、Login and logoff activities of sessionsD、Direct path load of data from external files by using utilities such as SQL *loaderE、Data definition language (DDL) and data manipulation language (DML) operations
Which statement is true about the UNDO_RETENTION parameter when retention guarantee is notenabled（）A、It is the time period after which the undo data becomes obsolete.B、It is the time period after which the committed undo data would be transferred to a temporarytablespace.C、It is the minimum time period up to which the committed undo data would be retained if free undo spaceis available.D、It is the time period after which the undo data is transferred to the Flash Recovery Area to provide readconsistency.
Which of the following operations does not require Oracle to store information in an UNDO segments as part of the transaction?（）A、INSERT B、SELECT C、UPDATE D、DELETE
The loss of which two types of files may require a recovery with the RESETLOGS option？（）A、 control filesB、 password fileC、 archived log filesD、 system-critical data files for which all the redo entries are presentE、 non-system-critical data files for which all the redo entries are present
Which two are the prerequisites to enable Flashback Data Archive？（）A、 Database must be running in archivelog mode.B、 Automatic undo management must be enabled.C、 Undo retention guarantee must be enabled.D、 The tablespace on which the Flashback Data Archive is created must be managed with Automatic Segment Space Management （ASSM）.
多选题Which two statements are true regarding transactions in an Oracle database（）AMultiple transactions can use the same undo segment.BA transaction is assigned an undo segment when it is started.CMore than one transaction cannot share the same extent in the undo tablespace.DThe transactions use system undo segment to store undo data if all the segments in the undo tablespaceare used.
多选题Which two operations require undo data？（）Acommitting a transactionBrolling back a transactionCrecovering from failed transactionsDrecording a transaction to redo log filesErolling forward during instance recovery
多选题Which two client requests are captured during database replay Capture?（） (Choose two)AFlashback queriesBShared server requestsCLogin and logoff activities of sessionsDDirect path load of data from external files by using utilities such as SQL *loaderEData definition language (DDL) and data manipulation language (DML) operations
多选题Which two are the prerequisites to enable Flashback Data Archive？（）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 Data Archive is created must be managed with Automatic Segment Space Management （ASSM）.
多选题You require the Oracle server to manage the undo segments and space among various active sessions automatically. You created an undo tablespace， UNDO_TBS1， in your database. Which two additional steps would you perform to achieve this？（）ASet the UNDO_RETENTION parameter to 900 or more.BCreate an initial undo segment in the undo tablespace.CEnable the retention guarantee for the undo tablespace.DSet the UNDO_TABLESPACE parameter to UNDO_TBS1.ESet the UNDO_MANAGEMENT initialization parameter to AUTO.
多选题The loss of which two types of files may require a recovery with the RESETLOGS option？（）Acontrol filesBpassword fileCarchived log filesDsystem-critical data files for which all the redo entries are presentEnon-system-critical data files for which all the redo entries are present
多选题Which are the two prerequisites before setting up Flashback Data Archive? （）(Choose two.)AFlash recovery area must be definedBUndo retention guarantee must be enabled.CDatabase must be running in archivelog mode.DAutomatic undo management must be enabled.EThe tablespace in which the Flashback Data Archive is created must have automatic segment space Management (ASSM).
单选题Which statement is true about the UNDO_RETENTION parameter when retention guarantee is notenabled（）AIt is the time period after which the undo data becomes obsolete.BIt is the time period after which the committed undo data would be transferred to a temporarytablespace.CIt is the minimum time period up to which the committed undo data would be retained if free undo spaceis available.DIt is the time period after which the undo data is transferred to the Flash Recovery Area to provide readconsistency.
单选题Which statement is true about the UNDO_RETENTION parameter when retention guarantee is not enabled（）AIt is the time period after which the undo data becomes obsolete.BIt is the time period after which the committed undo data would be transferred to a temporary tablespace.CIt is the minimum time period up to which the committed undo data would be retained if free undo space isavailable.DIt is the time period after which the undo data is transferred to the Flash Recovery Area to provide readconsistency.
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 Data Archive is created must be managed with Automatic Segment Space Management (ASSM).
单选题ENCRYPT_TS is an encrypted tablespace that contains tables with data. Which statement is true regarding the effect of queries and data manipulation language (DML) statements on the encrypted data in the tables?（）AThe data is decrypted during SORT and JOIN operations.BThe data remains encrypted when it is read into memory.CThe data remains encrypted when it is stored in the redo logs.DThe data remains encrypted in the UNDO tablespace provided that the UNDO tablespace was created with the encryption option enabled.
多选题Which two database operations can be performed at the MOUNT stage of database startup？（）Arenaming of data filesBdropping the database userCrenaming of control filesDmultiplexing of control filesEconfiguring the database in ARCHIVELOG mode
多选题Which three operations require undo data（）Acommitting a transactionBflashing back a transactionCrecovering a failed transactionDrunning a read-consistent queryEchanging a tablespace status from READ ONLY to READ WRITE
多选题Which operations require undo data（）ACommitting a transactionBFlashing back a transactionCRecovering a failed transactionDRunning a read-consistent queryEChanging a tablespace status from READ ONLY to READ WRITE