多项选择题When does a transaction complete?()

A.when a DELETE statement is executed 
B.when a ROLLBACK command is executed 
C.when a PL/SQL anonymous block is executed 
D.when a data definition language (DDL) statement is executed 
E.when a TRUNCATE statement is executed after the pending transact ion


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1.单项选择题Which statement is true regarding the COALESCE function?()

A.It can have a maximum of five expressions in a list 
B.It returns the highest NOT NULL value in the list for all rows 
C.It requires that all expressions in the list must be of the same data type 
D.It requires that at least one of the expressions in the list must have a NOT NULL value

2.单项选择题What does the minimize load database parameter mean when backing up a database?()

A.RMAN will attempt to make the backup run as fast as possible without any IO limitations. 
B.RMAN will automatically restrict the number of channels in use to one. 
C.RMAN will spread the backup IO over the total duration stated in the backup command.
D.RMAN will skip any datafile that currently is involved in an IO operation. RMAN will retry backing up the datafile later and an error will be raised at the end of the backup if the datafile cannot be backed up. 
E.Datafiles will be backed up; those having the lowest current number of IO operations will be backed up first. 

3.单项选择题What view might you use to try to determine how long a particular backup will take?()

A.V$SESSION_EVENT 
B.V$SESSION 
C.V$W0041ITS
D.V$WAITSTAT 
E.V$SESSION_LONGOPS 

4.单项选择题What does it mean if a backup is expired?()

A.The backup set has exceeded the retention criteria set in RMAN and is eligible for removal. 
B.The backup set has one or more invalid blocks in it and is not usable for recovery. 
C.The backup set contains one or more tablespaces no longer in the database.  
D.The backup set contains one or more missing backup set pieces.
E.The backup set is from a previous version of RMAN and was not upgraded. 

5.单项选择题You want to make sure that your database backup does not exceed 10 hours in length. What command would you issue that would meet this condition?()

A.backup database plus archivelog
B.backup database plus archivlog until time ‘10:00‘
C.backup database plus archivelog timeout ‘10:00‘
D.backup database plus archivelog duration 10:00

7.单项选择题Which command would you use to determine what database backups are currently available for restore?()

A.list database backup
B.report database backup  
C.list backup of database
D.list summary backup
E.report backup of database

8.单项选择题You are using RMAN to backup your ARCHIVELOG mode database. You have enabled control-file autobackups. Which files are not backed up during the RMAN backup?()

A.Database Datafiles 
B.Database Control Files 
C.Online redo logs
D.Archived redo logs 
E.The database SPFILE 
F.None of the above, all these files are backed up. 

9.单项选择题Which command will restore all datafiles to the date 9/30/2008 at 18:00 hours? ()

A.restore datafiles until time '09/28/2008:21:03:11'
B.restore database files until time '09/28/2008:18:00:00'
C.restore database until time '09/28/2008:18:00:00'
D.recover database until time '09/28/2008:18:00:00'
E.recover database until timestamp '09/28/2008:18:00:00'

10.单项选择题What command would you issue to enable automated backups of control files? ()

A.alter database controlfile autobacku on
B.alter system controlfile autobackup on 
C.configure controlfile autobackup on 
D.enable controlfile autobackup

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You are using Recovery Manager (RMAN) with a recovery catalog to back up your production database. The backups and the archived redo log files are copied to a tape drive on a daily basis. Because of media failure, you lost your production database completely along with the recovery catalog database. You want to recover the target database and make it functional. You consider performing the following steps to accomplish the task:Which option illustrates the correct sequence that you must use?()

题型:单项选择题

Examine the parameter setting in your database:Which statement is correct about the database?()

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The user SYS creates a job by using the following command:Which two statements are true about the job that was created by the preceding command?()

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Which two operations are NOT performed by the DUPLICATE command in Recovery Manager (RMAN)while duplicating a running database?()

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Note the following statements that use flashback technology:1. FLASHBACK TABLE <table> TO SCN <scn>;2. SELECT * FROM <table> AS OF SCN 123456;3. FLASHBACK TABLE <table> TO BEFORE DROP;4. FLASHBACK DATABASE TO TIMESTAMP <timestamp>;5. SELECT * FROM <table> VERSIONS AS OF SCN 123456 AND 123999;Which of these statements will be dependent on the availability of relevant undo data in the undo segment?()

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View the exhibit and examine the TRANS table's storage information.After a massive delete operation, you executed the following statement to shrink the TRANS table:SQL> ALTER TABLE trans SHRINK SPACE CASCADE;Which statement describes the outcome of the command?()

题型:单项选择题

User SCOTT wants to back out the transactions on the REGIONS table in his schema. As a DBA, which commands must you execute to enable SCOTT to flash back the transactions?()

题型:多项选择题

Which options would you consider while configuring a flash recovery area (fast recovery area in 11g Release 2) for your production database that is running in ARCHIVELOG mode?()

题型:多项选择题

Examine the following ALTER command:SQL> ALTER DISKGROUP dgroup1 UNDROP DISKS;What is the purpose of the command?()

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Examine the following RMAN script:Which statement describes the purpose of the script?()

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