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多选题
You work as a database administrator for Certkiller .com. In the middle of a transaction， a user session was abnormally terminated but the instance is still up and the database is open. Which two statements are true in this scenario？（）
A
Event Viewer gives more details on the failure.
B
The alert log file gives detailed information about the failure.
C
PMON rolls back the transaction and releases the locks.
D
SMON rolls back the transaction and releases the locks.
E
The transaction is rolled back by the next session that refers to any of the blocks updates by the failed transaction.
F
Data modified by the transaction up to the last commit before the abnormal termination is retained in the database.
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更多 “多选题You work as a database administrator for Certkiller .com. In the middle of a transaction， a user session was abnormally terminated but the instance is still up and the database is open. Which two statements are true in this scenario？（）AEvent Viewer gives more details on the failure.BThe alert log file gives detailed information about the failure.CPMON rolls back the transaction and releases the locks.DSMON rolls back the transaction and releases the locks.EThe transaction is rolled back by the next session that refers to any of the blocks updates by the failed transaction.FData modified by the transaction up to the last commit before the abnormal termination is retained in the database.” 相关考题
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单选题You work as a database administrator for Certkiller .com. Your database is in NOARCHIVELOG mode and you want to perform a backup. Which type of backup would be appropriate in this case？ （）A
Hot backupB
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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
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单选题You work as a database administrator for Supportcenter.cn. The database is open. A media failure has occurred， resulting in loss of all the control files in your database. Which statement regarding the database instance is true in this scenario？（）A
The instance would hang.B
The instance needs to be shut down.C
The instance would be in the open state.D
The instance would abort in such cases.E
The instance would be in the open and invalid state.F
The instance would in the open state， but all the background processes will be restarted.
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单选题You work as a database administrator for Certkiller .com. The database is open. A media failure has occurred， resulting in loss of all the control files in your database. Which statement regarding the database instance is true in this scenario？（）A
The instance would hang.B
The instance needs to be shut down.C
The instance would be in the open state.D
The instance would abort in such cases.E
The instance would be in the open and invalid state.F
The instance would in the open state， but all the background processes will be restarted.
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多选题You work as a database administrator for Certkiller .com. Your database is opened in NOARCHIVEKLOG mode. You decide to place the database in ARCHIVELOG mode. How would you do this？（）AExecute the ALTER DATABASE ARCHIVELOG statementBSelect ARCHIVELOG option in the database control and restart the database to apply the changes.CShut down and start the instance, and in the NOMOUNT state execute the ALTER DATABASE ARCHIVELOG statement.DShut down and start the instance, mount the database, then execute the ALTER DATABASE ARCHIVELOG statement.
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You must have started the database instance in restricted mode.B
You must have started the database instance inNORMALmode.C
You must have started the database instance with server parameter file.D
You must have started the database instance but must not have mounted.E
You must have started the database instance but must not have opened.
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单选题You work as a database administrator for Supportcenter.cn. One of the user sessions was terminated abnormally in the middle of a transaction. What does Oracle database do to recover it？（）A
Uses undo data for roll forwardB
Uses Flashback Log for recoveryC
Uses online redo logs to roll backD
Uses undo data to roll back the transactionE
Uses Recovery Manager （RMAN） to roll backF
Uses the System Monitor （SMON） background process to perform instance recovery
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单选题You work as a database administrator for Certkiller .com. On a Monday morning， you find the database instance aborted. After inspecting the alert log file， you execute the STARTUP command in SQL*Plus to bring the instance up. What statement is true？（）A
PMON coordinates media recovery.B
SMON coordinates instance recovery.C
PMON coordinates instance recovery.D
Undo Advisor would roll back all uncommitted transactions.E
SQL*PLUS reports an error with the message asking you to perform instance recovery.
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单选题You work as a database administrator for Certkiller .com. One of the user sessions was terminated abnormally in the middle of a transaction. What does Oracle database do to recover it？（）A
Uses undo data for roll forwardB
Uses Flashback Log for recoveryC
Uses online redo logs to roll backD
Uses undo data to roll back the transactionE
Uses Recovery Manager （RMAN） to roll backF
Uses the System Monitor （SMON） background process to perform instance recovery
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多选题You work as a database administrator for Certkiller .com. Your database is in the MOUNT state and you execute the following command to open it ALTER DATABASE OPEN； What two actions are performed as a result of this command？（）AAll control files are openedBAll redo files are openedCThe password file is openedDThe parameter file is openedEAll online data files are opened
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