单选题Your database is having two control files, three redo log file groups with two members in each group. Failure of which file would cause an instance to shut down?()Aany control fileBany archive log fileCone of the redo log membersDloss of the initialization parameter fileEany data file belonging to the default permanent tablespac

单选题
Your database is having two control files, three redo log file groups with two members in each group. Failure of which file would cause an instance to shut down?()
A

any control file

B

any archive log file

C

one of the redo log members

D

loss of the initialization parameter file

E

any data file belonging to the default permanent tablespac


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The database is configured in ARCHIVELOG mode and regular complete database backups are taken. Theloss of which two types of files may require a recovery with the RESETLOGS option? ()(Choose two) A. Control filesB. Password filesC. Inactive online redo log fileD. Archived log files required to perform recoveryE. Newly created tablespace which is not backed up

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The database is configured in ARCHIVELOG mode and regular complete database backups are taken. The loss of which two types of files may require a recovery with the RESETLOGS option?()A、 Control filesB、 Password filesC、 Inactive online redo log fileD、 Archived log files required to perform recoveryE、 Newly created tablespace which is not backed up

In which two cases would you perform only consistent backup?()A、You are working on a database where downtime is not tolerated.B、You are working on a database where downtime can be tolerated.C、You are working on a database that operates in ARCHIVELOG mode.D、You are working on a database that operates in NOARCHIVELOG mode.E、You are working on a database where all the tablespaces are locally managed.F、You are working on a database where control files and redo log files are multiplexed.G、You are working on a database where control files and redo log files are not multiplexed.

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Which type of database file is spread across all disks in a disk group?()A、 All types of files are spread across all disks in the disk group.B、 DatafilesC、 Redo log filesD、 Archived redo log filesE、 Control files

Which three statements are true about the stages of database startup?()A、Data files and redo log files can be renamed at the MOUNT stage.B、Control files are read at the OPEN stage for the location of data files.C、Control files are required to bring the database to the NOMOUNT stage.D、Data files and redo log files are made available to users at the OPEN stage.E、Data files and online redo log files are checked for consistency while opening the database

You configured the Flash Recovery Area (FRA) for your database. The database instance is runningin ARCHIVELOG mode. The default location for the archived redo log files is the Flash Recovery Area.  Which two files are removed automaticallyif the space is required in the FRA as per the retention policy()A、flashback log filesB、backups that have become obsoleteC、copies of the data files and control filesD、archived redo log files that have multiple copies in a different archive location and not backed up

Which two files in the database can be configured for automatic backups by using the autobackupfeature in Recovery Manager (RMAN)()A、data filesB、control filesC、parameter fileD、online redo log filesE、server parameter file

You are working on a database, where you have three redo log groups. When the database is down for a backup, an operating system (OS) user deletes all the redo log files in a group. What will happen when you open your database?()A、 The instance starts, the database is mounted, but efforts to open the database fail, and an error about the missing redo log group is displayed.B、 Before the instance starts, you receive an error about the missing redo log files of a group.C、 The instance starts and the database opens with an error message written to the alert log file.D、 The instance starts and the database opens because two redo log groups still exist.E、 The instance starts and the database opens, but every attempt to write to redo log files fails with an error.

Which two files in the database can be configured for automatic backups by using the autobackup feature inRecovery Manager (RMAN)()A、Data filesB、Control filesC、Parameter fileD、Online redo log filesE、Server parameter file

Which two operations are NOT performed by the DUPLICATE command in Recovery Manager (RMAN) whileduplicating a running database? ()(Choose Two)A、Creating the control file for the duplicate databaseB、Restoring the target data files to the duplicate databaseC、Performing complete recovery using all available backupsD、Generating a new, unique DBID for the duplicate databaseE、Copying the online redo log files from the target database to the duplicate database

Your database is having two control files, three redo log file groups with two members in each group. Failure of which file would cause an instance to shut down?()A、any control fileB、any archive log fileC、one of the redo log membersD、loss of the initialization parameter fileE、any data file belonging to the default permanent tablespac

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单选题You are working on a database, where you have three redo log groups. When the database is down for a backup, an operating system (OS) user deletes all the redo log files in a group. What will happen when you open your database?()A The instance starts, the database is mounted, but efforts to open the database fail, and an error about the missing redo log group is displayed.B Before the instance starts, you receive an error about the missing redo log files of a group.C The instance starts and the database opens with an error message written to the alert log file.D The instance starts and the database opens because two redo log groups still exist.E The instance starts and the database opens, but every attempt to write to redo log files fails with an error.

单选题Your database is in NOARCHIVELOG mode. The database has three online redo log groups, and each group contains three online redo log members. The online redo log members are stored across three hard disks, E, F, and G, respectively. Hard disk G crashed while the LGWR background process was writing redo information to the online redo log files. What effect will this crash have on the database?()A The database will operate normally without generating any redo.B The database will hang, and you must shut down and restart the instance.C The database will crash, and you must recover the database from the point of failure.D The database will operate normally and will generate minimal redo for the tables created with the NOLOGGING clause.

多选题In your production database, you have observed that the database server performance degrades whenever there is a switch between the log groups. On further investigation, you find that the database is running in ARCHIVELOG mode and the archived log files are being written to the same disk that is used to store the redo log members.  Which two actions would you take to improve the performance of the database server?()Aincrease the size of the redo log bufferBincrease the number of redo log groupsCincrease the number of log writer processesDincrease the number of ARCn processesEchange the appropriate LOG_ARCHIVE_DEST_n parameter to place the archived log files in a separate location

单选题If you create your database using Oracle Managed Files (OMF), what is true?()AYou must use Oracle predefined names to identify raw partitions that will hold OMF structures. BYou must define directories for two online redo log groups and three copies of the control file. CIf your CREATE DATABASE command fails, any OMF database files that have already been created will be dropped automatically. DYou must use only OMF data files when adding new tablespaces or data files to your database in the future.

多选题Which three statements are true about the stages of database startup?()AData files and redo log files can be renamed at the MOUNT stage.BControl files are read at the OPEN stage for the location of data files.CControl files are required to bring the database to the NOMOUNT stage.DData files and redo log files are made available to users at the OPEN stage.EData files and online redo log files are checked for consistency while opening the database

单选题Examine the following scenario: -Database is running in ARCHIVELOG mode. -Complete consistent backup is taken every Sunday. -On Tuesday the instance terminates abnormally because the disk on which control files are located gets corrupted -The disk having active online redo log files is also corrupted. -The hardware is repaired and the paths for online redo log files and control files are still valid. Which option would you use to perform the recovery of database till the point of failure?()ARestore the latest whole backup, perform complete recovery, and open the database normallyBRestore the latest whole backup, perform incomplete recovery, and open the database with the RESETLOGS optionCRestore the latest backups control file, perform complete recovery, and open the database with the RESETLOGS optionDRestore the latest backup control file, perform incomplete recovery using backup control file, and open the database with the RESETLOG option

单选题You are using recovery Manager (RMAN) with a recovery catalog to backup up your production database. The backups and the archived redo log files are copied to a tape drive on a daily basis. The database was open and transactions were recorded in the redo logs. Because of fire in the building you lost your servers having the production database and the recovery catalog database. The archive log files generated after the last backup are intact on one of the remote locations. While performing a disaster recovery of the production database what is the next step that you must perform after restoring the data files and applying archived redo logs?()AOpen the database in NORMAL modeBOpen the database in read-only modeCOpen the database in RESTRICTED modeDOpen the database with the RESETLOGS option

单选题You work as a database administrator for Certkiller .com. You started the instance using theinit.orafile. You have two control files and three redo log groups in your database. You decided to protect the database against failures by adding one more control file. Which file is the appropriate way to perform this task?()AShut down the instance, copy the control file to the third location and open the database.BAbort the instance, copy the control file to the third location, modify the CONTROL_FILES parameter in theinit.orafile and open the database.CCopy the control file to the third location, modify the CONTROL_FILES parameter in theinit.orafile, restart the instance and open the database.DShut down the instance, copy the control file to the third location, modify the CONTROL_FILES parameter in theinit.orafile and open the database.EShut down the instance, startup in the mount state, copy the control file to the third location, modify the CONTROL_FILES parameter ininit.oraand open the database.

多选题Which two operations are NOT performed by the DUPLICATE command in Recovery Manager (RMAN) whileduplicating a running database? ()(Choose Two)ACreating the control file for the duplicate databaseBRestoring the target data files to the duplicate databaseCPerforming complete recovery using all available backupsDGenerating a new, unique DBID for the duplicate databaseECopying the online redo log files from the target database to the duplicate database

多选题In the parameter file of your production database, the FAST_START_MTTR_TARGET parameter is set to 300 to optimize instance recovery. While observing the performance of the database during instance recovery, you find that the redo log files are not sized properly to support this activity. Which two sources could you use to determine the optimal size of the redo log files?()Athe V$LOG viewBthe V$DBFILE viewCthe V$LOGFILE viewDthe V$INSTANCE_RECOVERY viewEOracle Enterprise Manager Database Control