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单选题
Because of a power outage， instance failure has occurred. From what point in the redo log does recovery begin and where does it end？ （）
A
current redo log and inactive redo log
B
checkpoint position to end of redo log
C
beginning of redo log to end of redo log
D
all redo logs before the point of last commit
E
beginning of redo log to checkpoint position
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A database instance is using an Automatic Storage Management (ASM) instance, which has a disk group, DGROUP1, created as follows:What happens when the whole CONTROLLER1 Failure group is damaged?()
A. The transactions that use the disk group will halt.B. The mirroring of allocation units occurs within the CONTROLLER2 failure group.C. The data in the CONTROLLER1 failure group is shifted to the CONTROLLER2 failure group and implicit rebalancing is triggered.D. The ASM does not mirror any data and newly allocated primary allocation units (AU) are stored in the CONTROLLER2 failure group.
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View the Exhibit to examine the error during the database startup.You open an RMAN session for the database instance. To repair the failure, you executed the following as the first command in the RMAN session:RMAN REPAIR FAILURE;Which statement describes the consequence of the command?（）A. The command performs the recovery and closes the failures.B. The command only displays the advice and the RMAN script required for repair.C. The command produces an error because the ADVISE FAILURE command has not been executed before the REPAIR FAILURE command.D. The command executes the RMAN script to repair the failure and removes the entry from the Automatic Diagnostic Repository (ADR).
考题
A technician has been asked to ensure a PC is supplied with power for a short time, during apower failure. The technician should install which of the following devices to ensure thisrequirement is easily met?（）A. Backup power generatorB. Uninterruptable power supplyC. Power line conditionersD. Surge protectors
考题
Which of the following can occur if the maximum rated load is exceeded on an uninterruptible power supply (UPS)?()
A. There is a fire hazard potential if a power outage occurs.B. The last system plugged into the UPS will not be provided any power.C. The UPS will draw more power from the circuit to compensate.D. The runtime of the UPS will be insufficient if a power outage occurs.
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A VLCC（100，000 DWT+）with a 30，000 Shaft Horsepower Steam Turbine is slow to respond to engine movements and has less stopping power than normal ships because it has a ______．A.Bigger propellerB.Smaller power weight ratioC.Smaller propellerD.Larger power weight ratio
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A technician has been asked to ensure a PC is supplied with power for a short time, during apower failure. The technician should install which of the following devices to ensure thisrequirement is easily met?（）A、Backup power generatorB、Uninterruptable power supplyC、Power line conditionersD、Surge protectors
考题
Given below is a list of scenarios： 1） A user terminates his session abnormally. 2） The connection between the server and the client application terminates because of a network failure. 3） A schema is accidentally dropped. 4） The tablespace is accidentally dropped from the database. 5） The hard disk gets corrupted and the data files in the disk are lost. 6） The database instance abnormally shuts down because of power failure. Which scenarios require DBAintervention to perform recovery（）A、1， 3， and 6B、4， 5， and 6C、3， 4， and 5D、1， 2， and 6
考题
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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A failure of the primary data center has occurred. A warm site is available for use. Which of the following should be done FIRST to bring the critical applications online？（）A、Run cabling and power to the warm site.B、Restore data to the equipment.C、Transfer all data tapes over to the warm site.D、Restore least critical applications online to test to make sure the site is functioning.
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Which of the following printer failure symptoms can be described as a condition where the internal feed mechanism has stopped working temporarily?（）A、Power cycleB、Paper jamC、No connectivityD、Corrupt printer driver
考题
A data center has had a power outage. Which of the following should the administrator do FIRST once the power is restored?（）A、Identify which systems are the most critical and bring them up by level of importance.B、Retrieve the latest backup tapes for immediate system restore using the GFS rotation.C、Identify the least critical systems and then power those systems on first.D、Determine the cause of the power outage and install UPS systems to prevent its reoccurrence.
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Which of the following can occur if the maximum rated load is exceeded on an uninterruptible power supply （UPS）？（）A、 There is a fire hazard potential if a power outage occurs.B、 The last system plugged into the UPS will not be provided any power.C、 The UPS will draw more power from the circuit to compensate.D、 The runtime of the UPS will be insufficient if a power outage occurs.
考题
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
考题
A media failure has occurred. This has resulted in all the members of the next hop log group being rendered inaccessible to the log writer process （LGWR） at a log switch. How does this failure affect the operational database？（）A、 The database re-created the missing redo log files automatically.B、 The database continues to function normally with the existing files.C、 The database allows only queries， no other statements are allowed.D、 The database returns and error and the database instance shuts down.E、 The user sessions that generate redo logs are terminated automatically.
考题
Because of a power outage， instance failure has occurred. From what point in the redo log does recovery begin and where does it end？（）A、current redo log and inactive redo logB、checkpoint position to end of redo logC、beginning of redo log to end of redo logD、all redo logs before the point of last commitE、beginning of redo log to checkpoint position
考题
Observe the following warning in an RMAN session of your database instance: WARNING: new failures were found since last LIST FAILURE command Which statement describes the scenario that must have produced this warning?（）A、The CHANGE FAILURE command has detected new failures recorded in the Automatic Diagnostic Repository(ADR)B、The VALIDATE DATABASE command has detected new failures recorded in the Automatic Diagnostic Repository (ADR)C、The ADVISE FAILURE command has detected new failures recorded in the Automatic Diagnostic Repository (ADR) since the last LIST FAILURED、The RECOVER command has detected new failures recorded in the Automatic Diagnostic Repository (ADR) since the last LIST FAILURE command was executed
考题
单选题A data center has had a power outage. Which of the following should the administrator do FIRST once the power is restored？ （）A
Identify which systems are the most critical and bring them up by level of importance.B
Retrieve the latest backup tapes for immediate system restore using the GFS rotation.C
Identify the least critical systems and then power those systems on first.D
Determine the cause of the power outage and install UPS systems to prevent its reoccurrence.
考题
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.
考题
单选题Given below is a list of scenarios： 1）A user terminates his session abnormally. 2）The connection between the server and the client application terminates because of a network failure. 3）A schema is accidentally dropped. 4）The tablespace is accidentally dropped from the database. 5）The hard disk gets corrupted and the data files in the disk are lost. 6）The database instance abnormally shuts down because of power failure. Which scenarios require DBA intervention to perform recovery（）A
4 and 5B
1，3，and 6C
4，5，and 6D
3，4，and 5E
1，2，and 6
考题
单选题Observe the following warning in an RMAN session of your database instance： WARNING:// new failures were found since last LIST FAILURE command Which statement describes the scenario that must have produced this warning？（）A
The CHANGE FAILURE command has detected new failures recorded in the Automatic Diagnostic Repository（ADR）B
The VALIDATE DATABASE command has detected new failures recorded in the Automatic Diagnostic Repository （ADR）C
The ADVISE FAILURE command has detected new failures recorded in the Automatic Diagnostic Repository （ADR） since the last LIST FAILURED
The RECOVER command has detected new failures recorded in the Automatic Diagnostic Repository （ADR） since the last LIST FAILURE command was executed
考题
单选题Given below is a list of scenarios： 1） A user terminates his session abnormally. 2） The connection between the server and the client application terminates because of a network failure. 3） A schema is accidentally dropped. 4） The tablespace is accidentally dropped from the database. 5） The hard disk gets corrupted and the data files in the disk are lost. 6） The database instance abnormally shuts down because of power failure. Which scenarios require DBAintervention to perform recovery（）A
1， 3， and 6B
4， 5， and 6C
3， 4， and 5D
1， 2， and 6
考题
单选题A VLCC (100，000 DWT+) with a 30，000 Shaft Horsepower Steam Turbine is slow to respond to engine movements and has less stopping power than normal ships because it has a（）.A
bigger propellerB
smaller power to weight ratioC
smaller propellerD
larger power to weight ratio
考题
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.
考题
单选题The instance abnormally terminates because of a power outage. Which statement is true about redolog files during instance recovery（）A
Inactive and current redo log files are required to accomplish recovery.B
Online and archived redo log files are required to accomplish instance recovery.C
All redo log entries after the last checkpoint are applied from redo log files to data files.D
All redo log entries recorded in the current redo log file until the checkpoint position are applied to datafiles.
考题
单选题A media failure has occurred. This has resulted in all the members of the next hop log group being rendered inaccessible to the log writer process （LGWR） at a log switch. How does this failure affect the operational database？（）A
The database re-created the missing redo log files automatically.B
The database continues to function normally with the existing files.C
The database allows only queries， no other statements are allowed.D
The database returns and error and the database instance shuts down.E
The user sessions that generate redo logs are terminated automatically.
考题
单选题A technician has been asked to ensure a PC is supplied with power for a short time, during apower failure. The technician should install which of the following devices to ensure thisrequirement is easily met?（）A
Backup power generatorB
Uninterruptable power supplyC
Power line conditionersD
Surge protectors
考题
单选题Which of the following can occur if the maximum rated load is exceeded on an uninterruptible power supply (UPS)?（）A
There is a fire hazard potential if a power outage occurs.B
The last system plugged into the UPS will not be provided any power.C
The UPS will draw more power from the circuit to compensate.D
The runtime of the UPS will be insufficient if a power outage occurs.
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