单选题You are in the middle of a transaction updating a very important table. The machine on which a database wasrunning reboots because of power outage. This caused a database instance failure. Which statement is true inthis situation（）AThe online redo log files and archived redo log files are required to accomplish the recovery.BThe uncommitted transaction will be committed at the next startup of the database instance.CThe uncommitted transaction is rolled back automatically at the next opening of the database.DThe DBA has to perform the recovery on the database to recover the uncommitted transaction
单选题
You are in the middle of a transaction updating a very important table. The machine on which a database wasrunning reboots because of power outage. This caused a database instance failure. Which statement is true inthis 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
参考解析
解析：
暂无解析
相关考题：
—Shall we see a movie tonight?--- ____.A.Thank you very muchB.Good you very muchC.See you later
—Would you like a coffee? — () A、Yes, pleaseB、I like coffee very much.C、I like coffee very much.D、Thank you very much.
A:Hello, Linda, how are you? B:( ).A. Very good. Are you good?B. Very well, thank you. And you?C. Hello, Rose, how do you do?
View the following SQL statements:You want to back out transaction T2. Which option would you use?() A. It is possible, but transaction T3 also backs out.B. It is possible with the NOCASCADE_FORCE option.C. It is possible with the NONCONFLICT_ONLY option.D. It is not possible because it has conflicts with transaction T3.
You think you are one of the high and mighty;remember pride goes before a fall.A:very fast B:very longC:very great D:very strong
You are employed as a DBA in an organization. You are informed that the record of EMP_NO 1000 is missing from the SCOTT.EMP table. You are required to identify the user who deleted the record， the SQL statement that will undo the deletion， and the transaction ID of the transaction that deleted the employee record. Which feature will you use to perform the tasks？（）A、 Only the Flashback TableB、 Both the Flashback Transaction Query and the Flashback Version QueryC、 Only the Flashback DropD、 Only the Flashback Version
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.
You want to use the Flashback Transaction Query feature to identify all the changes made to your database within a specific time period. What is a prerequisite for using the Flashback Transaction Query feature？（）A、 You must use automatic undo management in the database.B、 You must configure OMF in your database.C、 You must configure ASM for storing the datafiles.D、 You must multiplex the online redo log file.
You are in the middle of a transaction updating a very important table. The machine on which a database wasrunning reboots because of power outage. This caused a database instance failure. Which statement is true inthis 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
By using the transaction identifier provided by（）for a particular row change， you can use the Flashback Transaction Query to see the operation performed by the transaction. A、 Flashback TableB、 Flashback DatabaseC、 Flashback Version QueryD、 The RMAN REPORT commandE、 The DBA_PENDING_TRANSACTIONS view
You are working on the 24X7 database with high transaction volume， to ensure faster instance recovery on your database you set the FAST_START_MTTR_TARGET initialization parameter to a very low value. What effect it will have on the database？（）A、The database performance would be enhanced.B、The redo log files would be get filled more frequently.C、The overall database performance would be degraded.D、The mean time to recover （MTTR） would be increased.
In which scenario will you use the Flashback Version Query feature？（）A、 when you want to restore a table that has been dropped from the Recycle BinB、 when you want to identify the transaction ID of the transaction that deleted some important records from a tableC、 when you want to recover the schema of a dropped userD、when you want to restore a dropped tablespace
By mistake， you ran the batch job （for updating the BILL_DETAILS table） twice. You are not sure which rows in the BILL_DETAILS table were affected. You need to identify： a） A list of changes made along with the transaction identifier of each change. b） The necessary SQL statements to undo the erroneous changes. Which option would you choose？（）A、 RMAN only.B、 Flashback Table only.C、 Flashback Version Query only.D、 Flashback Database and Flashback Transaction Query.E、 Flashback Version Query and Flashback Transaction Query.
At 10：30 A.M.， you ran a batch job by mistake， which executed a transaction in the database. The transaction identifier of the transaction that made to the changes in the database is 0500A00627B000. At 11：10 A.M.， you stopped the batch job. Now， you want to identify the changes made to the database tables by the batch job. Which view will you query？（）A、 DBA_PENDING_TRANSACTIONSB、 DBA_AUDIT_STATEMENTC、 V$FLASHBACK_DATABASE_STATSD、 FLASHBACK_TRANSACTION_QUERY
You work as an application developer at Certkiller .com. Certkiller .com has been contracted to develop an application for the local bank.You have been given the responsibility of creating this application and need to store each transaction record， which is identified using a complex transaction identifier，in memory. The bank informs you that the total amount of transaction records could reach 200 per day. To achieve this， you decide to utilize one of the existing collection classes in the .NET 2.0 class library. You need to ensure that you the collection class you select is the most efficient one for storing transaction records.What should you do？（）A、 Select the ListDictionary collection class.B、 Select the HashTable collection class.C、 Select the Queue collection class.D、 Select the StringCollection collection class.
单选题In which scenario will you use the Flashback Version Query feature？（）A when you want to restore a table that has been dropped from the Recycle BinB when you want to identify the transaction ID of the transaction that deleted some important records from a tableC when you want to recover the schema of a dropped userDwhen you want to restore a dropped tablespace
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？（）AUses undo data for roll forwardBUses Flashback Log for recoveryCUses online redo logs to roll backDUses undo data to roll back the transactionEUses Recovery Manager （RMAN） to roll backFUses the System Monitor （SMON） background process to perform instance recovery
单选题You are a database administrator for your company. The company uses a SQL Server 2005 database. A full backup of the database is made each night. Transaction log backups are made each morning and each afternoon. You notice that the database transaction log file grows very large throughout the day. You need to minimize the size of the transaction log file. You also need to minimize data loss in the event of a failure. What should you do？（）ADecrease the amount of time between transaction log backups.BConfigure the database to use the simple recovery model.CConfigure the RECOVERY INTERVAL option to be a smaller value.DRun DBCC SHRINKFILE on the transaction log file.
单选题You are employed as a DBA in an organization. You are informed that the record of EMP_NO 1000 is missing from the SCOTT.EMP table. You are required to identify the user who deleted the record， the SQL statement that will undo the deletion， and the transaction ID of the transaction that deleted the employee record. Which feature will you use to perform the tasks？（）A Only the Flashback TableB Both the Flashback Transaction Query and the Flashback Version QueryC Only the Flashback DropD Only the Flashback Version
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（）AThe online redo log files and archived redo log files are required to accomplish the recovery.BThe uncommitted transaction will be committed at the next startup of the database instance.CThe uncommitted transaction is rolled back automatically at the next opening of the database.DThe DBA has to perform the recovery on the database to recover the uncommitted transaction.
单选题You are in the middle of a transaction updating a very important table. The machine on which a database wasrunning reboots because of power outage. This caused a database instance failure. Which statement is true inthis situation（）AThe online redo log files and archived redo log files are required to accomplish the recovery.BThe uncommitted transaction will be committed at the next startup of the database instance.CThe uncommitted transaction is rolled back automatically at the next opening of the database.DThe DBA has to perform the recovery on the database to recover the uncommitted transaction
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
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.
单选题At 10：30 A.M.， you ran a batch job by mistake， which executed a transaction in the database. The transaction identifier of the transaction that made to the changes in the database is 0500A00627B000. At 11：10 A.M.， you stopped the batch job. Now， you want to identify the changes made to the database tables by the batch job. Which view will you query？（）A DBA_PENDING_TRANSACTIONSB DBA_AUDIT_STATEMENTC V$FLASHBACK_DATABASE_STATSD FLASHBACK_TRANSACTION_QUERY
单选题By mistake， you ran the batch job （for updating the BILL_DETAILS table） twice. You are not sure which rows in the BILL_DETAILS table were affected. You need to identify： a） a list of changes made along with the transaction identifier of each change b） the necessary SQL statements to undo the erroneous changes Which option would you choose？（）ARMAN onlyBFlashback Table onlyCFlashback Versions Query onlyDFlashback Database and Flashback Transaction QueryEFlashback Versions Query and Flashback Transaction Query
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.
单选题By mistake， you ran the batch job （for updating the BILL_DETAILS table） twice. You are not sure which rows in the BILL_DETAILS table were affected. You need to identify： a） A list of changes made along with the transaction identifier of each change. b） The necessary SQL statements to undo the erroneous changes. Which option would you choose？（）A RMAN only.B Flashback Table only.C Flashback Version Query only.D Flashback Database and Flashback Transaction Query.E Flashback Version Query and Flashback Transaction Query.