A.The DBA is working on the incident and prefers that t……

单项选择题View the Exhibit and examine the parameters. User A executes the following command to update the TRANStable： SQL> UPDATE B.trans SET tr_amt=tr_amt+500 WHERE c_code=’C005’； Before user A issues a COMMIT orROLLBACK command， user B executes the following command on the TRANS table： SQL> ALTER TABLE trans MODIFY （tr_type VARCHAR2（3））；  What would happen in this scenario（）

A.The ALTER TABLE command modifies the column successfully.
B.The DDL operation gets higher priority and transaction for user A is rolled back.
C.The ALTER TABLE command waits indefinitely until user A ends the transaction.
D.The ALTER TABLE command fails after waiting for 60 seconds due to the resource being busy

单项选择题The database instance is currently using SPFILE. View the Exhibit and examine the error that you receivedwhile running the DB Structure Integrity check. Given below are the steps to recover from the error in randomorder： 1.Shut down the instance， if not already done. 2.Copy one of the remaining control files to a new location. 3.Change the value of the CONTROL_FILES initialization parameter to correspond to the new location of thecontrol files. 4.Start up the database instance to the NOMOUNT stage. 5.Recover the database to the point of failure of the control file. 6.Open the database.  Identify the correct sequence of steps（）

A.1，2，4，3，5，6
B.2，4，3，5，6；1 not required
C.4，5，6，2，3；1 not required
D.5，2，3，4；1 and 6 not required

单项选择题our database instance is started using the server parameter file （SPFILE）. You executed a command tochange the value of the LOG_BUFFER initialization parameter：ALTER SYSTEM SET LOG_BUFFER=32M SCOPE=BOTH； What would be the outcome of this command（）

A.The command succeeds only if Automatic Memory Management is not enabled.
B.The command succeeds， but you need to restart the database for changes to take effect.
C.The command returns an error because the size of the redo log buffer cannot be changed dynamically.
D.The parameter value is changed and it comes into effect as soon as space becomes available in theSystem Global Area （SGA）

单项选择题YouareworkingonaninstancestartedusingtheSPFILE.YouwanttomovetheFlashRecoveryAreaofyourdatabasetoanewlocation.YouwanttheFlashbacklogfilestobestoredinthenewlocation.Givenbeloware thestepstoaccomplishthetaskinrandomorder： 1.Shutdowntheinstance. 2.ChangethevalueoftheDB_RECOVERY_FILE_DESTinitializationparametertoanewvalue. 3.ExecutetheALTERDATABASEFLASHBACKOFFcommand. 4.Startuptheinstanceandmountthedatabase. 5.ExecutetheALTERDATABASEFLASHBACKONcommand. 6.Openthedatabase. Selectthecorrectorderinwhichthesetasksneedtobeperformed.（）

A.2，1，4，3，5，6
B.1，4，3，2，6，5
C.1，4，2，6，3，5
D.3，2，1，4，5，6

单项选择题Note the following structures in your database server： 1.Extents 2.OS Blocks 3.Tablespace 4.Segments 5.Oracle Data Block Which option has the correct arrangement of these structures from the smallest to the largest（）

A.2，5，1，4，3
B.1，2，3，4，5
C.5，2，1，3，4
D.2，1，5，4，3