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多选题
You are in the middle of a transaction and very crucial data has been modified. Because of a hardware failure， the instance has shut down before synchronizing all the database files. Which two statements are true？（）
A
On startup， SMON coordinates instance recovery.
B
On startup， CKPT coordinates instance recovery.
C
On startup， use RMAN to perform instance recovery.
D
Uncommitted changes will be rolled back after the database is opened.
E
On startup， perform media recovery and then instance recovery.
F
On startup， all the files will be synchronized and you get both committed and uncommitted data.
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更多 “多选题You are in the middle of a transaction and very crucial data has been modified. Because of a hardware failure， the instance has shut down before synchronizing all the database files. Which two statements are true？（）AOn startup， SMON coordinates instance recovery.BOn startup， CKPT coordinates instance recovery.COn startup， use RMAN to perform instance recovery.DUncommitted changes will be rolled back after the database is opened.EOn startup， perform media recovery and then instance recovery.FOn startup， all the files will be synchronized and you get both committed and uncommitted data.” 相关考题
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Uses the System Monitor （SMON） background process to perform instance recovery
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单选题ou are in the middle of a transaction updating a very important table. The machine on which adatabase was running reboots because of power outage. This caused a database instance failure. Which statement is true in this situation（）A
The online redo log files and archived redo log files are required to accomplish the recovery.B
The uncommitted transaction will be committed at the next startup of the database instance.C
The uncommitted transaction is rolled back automatically at the next opening of the database.D
The DBA has to perform the recovery on the database to recover the uncommitted transaction.
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The online redo log files and archived redo log files are required to accomplish the recovery.B
The uncommitted transaction will be committed at the next startup of the database instance.C
The uncommitted transaction is rolled back automatically at the next opening of the database.D
The DBA has to perform the recovery on the database to recover the uncommitted transaction
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单选题You have two tables with referential integrity enforced between them. You need to insert data to the child tablefirst because it is going to be a long transaction and data for the parent table will be available in a later stage，which can be inserted as part of the same transaction. View the Exhibit to examine the commands used tocreate tables. Which action would you take to delay the referential integrity checking until the end of thetransaction（）A
Set the constraint to deferred before starting the transaction.B
Alter the constraint to NOVALIDATE state before starting the transaction.C
Enable the resumable mode for the session before starting the transaction.D
Set the COMMIT_WAIT parameter to FORCE_WAIT for the session before starting the transaction
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单选题A support engineer reports that inserting new sales transactions in a SQL Server 2005 database results in an error. You investigate the error. You discover that in one of the databases, a developer has accidentally deleted some data in a table that is critical for transaction processing. The database uses the full recovery model. You need to restore the table. You need to achieve this goal without affecting the availability of other data in the database. What should you do?（）A
Back up the current transaction log. Restore the database with a different name and stop at the point just before the data loss. Copy the table back into the original database.B
Back up the current transaction log. Restore the database to the point just before the data loss.C
Restore the database from the existing backup files to a time just before the data loss.D
Restore the database to the point of the last full backup.
考题
单选题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 are designing a Windows Azure application that will use Windows Azure Table storage. You need to recommend an approach for minimizing storage costs. What should you recommend？ （）A
Use Entity Group Transactions.B
Use multiple partitions to store data.C
Use a transaction scope to groupall storage operations.D
Use Microsoft Distributed Transaction Coordinator （MSDTC）.
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单选题You are designing a web service that will be hosted in Windows Azure. The web service will accept and store structured and semi-structured data. The web service must meet the following requirements： - Update all data within a single transaction. - Enforce the data structure for structured data within the data store. You need to recommend an approach for storing the data. What should you recommend？（）A
Use Windows Azure Queues.B
Use a single SQL Azure database.C
Use a single Windows Azure Drive.D
Use Windows Azure Table storage.
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单选题You are designing a Windows Azure application that will store data in two SQL Azure databases. The application will insert data in both databases as part of a single logical operation. You need to recommend an approach for maintaining data consistency across the databases. What should you recommend？（）A
Execute database calls on parallel threads.B
Wrap the database calls in a single transaction scope.C
Use Microsoft Distributed Transaction Coordinator （MSDTC）.D
Handle errors resulting from the database calls by using compensatory logic.
考题
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.
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