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单选题
You have a long-running process you want to assign to a specific UNDO segment brought online for that express purpose. You are not using automatic UNDO management. What statement can be used for this task? （）
A
ALTER DATABASE
B
SET TRANSACTION
C
ALTER ROLLBACK SEGMENT
D
ALTER TABLE
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You have not configured Oracle Managed Files (OMF) in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature. Which statement should you use to enable the block change tracking feature?（）A. ALTER DATABASE ENABLE BLOCK CHANGE TRACKING;B. ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE path;C. ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE path;D. ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING;
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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.
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You are maintaining your database in Oracle10g. You set the value of the UNDO_RETENTION initialization parameter to zero in the initialization parameter file. What will be the impact of specifying this setting？（） A、 The database will not start.B、 The database will start but will not retain the undo data in the undo segment.C、 The database will start， and the undo segment will contain the undo data for at least one hour.D、 The database will start， and the undo segment will retain the undo data for at least 15 minutes.
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You are shrinking the SCOTT.EMP table by executing the ALTER TABLE SCOTT.EMP SHRINK SPACE CASCADE statement. What is a prerequisite for shrinking the SCOTT.EMP table？（）A、 You must enable the block change tracking feature.B、 You must have enable the flashback feature.C、 You must use the OMF in your database.D、 You must define the tablespace of the SCOTT.EMP table for automatic segment space management.
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You have not configured Oracle Managed Files （OMF） in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature. Which statement will you use to enable the block change tracking feature？（）A、 ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING；B、 ALTER DATABASE ENABLE BLOCK CHANGE TRACKING；C、 ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE ；D、 ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ；
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You are maintaining your OLTP database in Oracle10g. You are performing the Flashback Transaction Query to find the undo SQL statements that can be used to undo the changes made to the database in the specific time period. Which pseudocolumn will you use to perform the Flashback Transaction Query？（）A、 VERSIONS_STARTSCNB、 VERSIONS_STARTTIMEC、 VERSIONS_XIDD、 VERSIONS_OPERATION
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You work as a database administrator for Certkiller .com. You want to create your database with the automatic undo management feature enable.Which two tasks must you perform to achieve this？（）A、Set the UNDO_RETENTION parameter to AUTO.B、Create an initial undo segment in undotablespace.C、Set the UNDO_RETENTION parameter to 900 or moreD、Set the initialization parameter UNDO_MANAGEMENT to AUTOE、Set the UNDO_MANAGEMENT parameter to the name of an undotablespace
考题
Your database is running under automatic undo management and the UNDO_RETENTION parameter is set to 900 sec. You executed the following command to enable retention guarantee： SQL ALTER TABLESPACE undotbs1 RETENTION GUARANTEE; What effect would this statement have on the database？（）A、The extents in undo tablespace retain data until the next full database backup.B、The extents containing committed data in the undo tablespace are never overwritten.C、The extents which no longer contain uncommitted data in the undo tablespace are not overwritten for at least15 minutes.D、The extents containing committed data in the undo tablespace are not overwritten until the instance is shut down.
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You work as a database administrator for Certkiller .com. Your database is configured for automatic undo management. UNDO_RETENTION is set to 3 hours. You want to flash back a table that was created last year. How far back can the flashback query go？ （）A、3 hoursB、6 monthsC、until last yearD、until last commitE、until the point when the undotablespacewas refreshedF、until the database is shut down and the memory erased
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Your database instance is configured with automatic undo management and the UNDO_RETENTION parameter is set to 900 seconds. You executed the following command to enable retention guarantee： SQL ALTER TABLESPACE undotbs1 RETENTION GUARANTEE； What effect would this command have on the database（）A、The extents in the undo tablespace retain data until the next full database backup.B、The extents containing committed undo in the undo tablespace are not overwritten for at least 15minutes.C、The extents containing committed data in the undo tablespace are not overwritten until the instance isshut down.D、The extents containing committed undo in the undo tablespace are transferred to Flash Recovery Areabefore being overwritten.
考题
You have a long-running process you want to assign to a specific UNDO segment brought online for that express purpose. You are not using automatic UNDO management. What statement can be used for this task? （）A、ALTER DATABASE B、SET TRANSACTION C、ALTER ROLLBACK SEGMENT D、ALTER TABLE
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You have not configured Oracle Managed Files (OMF) in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature.Which statement should you use to enable the block change tracking feature?（）A、ALTER DATABASE ENABLE BLOCK CHANGE TRACKINGB、ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE C、ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE D、ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING
考题
单选题AUM has been retaining about 15 minutes worth of undo. You want to double the retentionperiod， but not at the expense of new transactions failing. You decide to alter the system to set the parameter UNDO_RETENTION=18000. However， AUM still retains only about 15 minutes worth of undo. What is the problem？ （）A
You need to alter the undo tablespace to add the RETENTION GUARANTEE setting.B
You need to increase the size of the undo tablespace.C
The undo tablespace is not set to auto-extend.D
You need to alter the Recycle Bin to add the RETENTION GUARANTEE setting.
考题
单选题You have not configured Oracle Managed Files （OMF） in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature. Which statement will you use to enable the block change tracking feature？（）A
ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING；B
ALTER DATABASE ENABLE BLOCK CHANGE TRACKING；C
ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE ；D
ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ；
考题
单选题Your database instance is configured with automatic undo management and the UNDO_RETENTION parameter is set to 900 seconds. You executed the following command to enable retention guarantee： SQL ALTER TABLESPACE undotbs1 RETENTION GUARANTEE； What effect would this command have on the database（）A
The extents in the undo tablespace retain data until the next full database backup.B
The extents containing committed undo in the undo tablespace are not overwritten for at least 15minutes.C
The extents containing committed data in the undo tablespace are not overwritten until the instance isshut down.D
The extents containing committed undo in the undo tablespace are transferred to Flash Recovery Areabefore being overwritten.
考题
单选题You are maintaining your OLTP database in Oracle10g. You are performing the Flashback Transaction Query to find the undo SQL statements that can be used to undo the changes made to the database in the specific time period. Which pseudocolumn will you use to perform the Flashback Transaction Query？（）A
VERSIONS_STARTSCNB
VERSIONS_STARTTIMEC
VERSIONS_XIDD
VERSIONS_OPERATION
考题
单选题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.
考题
单选题Your Oracle10g database contains a table with a TIMESTAMP TO LOCAL TIME ZONE column. There are about two hundred column values for the column. You issued the following statement： SQL ALTER DATABASE SET TIME_ZONE =’Europe/London’； What will be the result of issuing the above statement？（）A
The statement will be executed successfully， and a new time zone will be set for the database.B
The statement will be executed successfully， but a new time zone will not be set for the database.C
The statement will not be executed successfully because the SET TIME_ZONE clause can be used only with the ALTER SESSION statement.D
The statement will not be executed successfully because the ALTER DATABASE SET TIME_ZONE statement is used only when the database contains no table with the TIMESTAMP TO LOCAL TIME ZONE column.
考题
单选题Your database is running under automatic undo management and the UNDO_RETENTION parameter is set to 900 sec. You executed the following command to enable retention guarantee： SQL ALTER TABLESPACE undotbs1 RETENTION GUARANTEE; What effect would this statement have on the database？（）A
The extents in undo tablespace retain data until the next full database backup.B
The extents containing committed data in the undo tablespace are never overwritten.C
The extents which no longer contain uncommitted data in the undo tablespace are not overwritten for at least15 minutes.D
The extents containing committed data in the undo tablespace are not overwritten until the instance is shut down.
考题
单选题You need to maintain a record of all transactions on some tables for at least three years. Automatic undo management is enabled for the database.What must you do accomplish this task?（）A
Enable supplemental logging for the database.B
Specify undo retention guarantee for the databaseC
Create Flashback Data Archive in the tablespace where the tables are stored.D
Create Flashback Data Archive and enable Flashback Data Archive for specific tables
考题
单选题You are shrinking the SCOTT.EMP table by executing the ALTER TABLE SCOTT.EMP SHRINK SPACE CASCADE statement. What is a prerequisite for shrinking the SCOTT.EMP table？（）A
You must enable the block change tracking feature.B
You must have enable the flashback feature.C
You must use the OMF in your database.D
You must define the tablespace of the SCOTT.EMP table for automatic segment space management.
考题
单选题You work as a database administrator for Certkiller .com. Your database is configured for automatic undo management. UNDO_RETENTION is set to 3 hours. You want to flash back a table that was created last year. How far back can the flashback query go？ （）A
3 hoursB
6 monthsC
until last yearD
until last commitE
until the point when the undotablespacewas refreshedF
until the database is shut down and the memory erased
考题
单选题You are maintaining your database in Oracle10g. You set the value of the UNDO_RETENTION initialization parameter to zero in the initialization parameter file. What will be the impact of specifying this setting？（）A
The database will not start.B
The database will start but will not retain the undo data in the undo segment.C
The database will start， and the undo segment will contain the undo data for at least one hour.D
The database will start， and the undo segment will retain the undo data for at least 15 minutes.
考题
单选题You need to maintain a record of all transactions on some tables for at least three years. Automatic undo management is enabled for the database. What must you do accomplish this task？（）A
Enable supplemental logging for the database.B
Specify undo retention guarantee for the databaseC
Create Flashback Data Archive in the tablespace where the tables are stored.D
Create Flashback Data Archive and enable Flashback Data Archive for specific tables
考题
单选题You have not configured Oracle Managed Files （OMF） in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature. Which statement should you use to enable the block change tracking feature？（）A
ALTER DATABASE ENABLE BLOCK CHANGE TRACKINGB
ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE C
ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE D
ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING
考题
单选题If you issue the command shutdown abort prior to trying to put the database in ARCHIVELOG mode， what will be the result when you issue the command alter database archivelog？（）A
The alter database archivelog command will failB
The alter database archivelog inconsistent command must be used to put the database in ARCHIVELOG modeC
The alter database archivelog command will succeedD
The alter database archivelog command will ask if you want to make the database consistent firstE
There is no alter database archivelog command. The correct command is alter database alterlogging
考题
多选题You work as a database administrator for Certkiller .com. You want to create your database with the automatic undo management feature enable.Which two tasks must you perform to achieve this？（）ASet the UNDO_RETENTION parameter to AUTO.BCreate an initial undo segment in undotablespace.CSet the UNDO_RETENTION parameter to 900 or moreDSet the initialization parameter UNDO_MANAGEMENT to AUTOESet the UNDO_MANAGEMENT parameter to the name of an undotablespace
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