单选题Your database operates in ARCHIVELOGmode. The redo log files are not multiplexed and one of the online redo logs is missing. The missing redo log sequence， 230， is not archived and it contained information from 10：35 a.m. onwards. The current time is 11：00 a.m. Because of a disk crash， you executed the following command to perform an incomplete recovery： RMAN RUN { 2 SET UNTIL SEQUENCE 230 THREAD 1； 3 ALTER DATABASE MOUNT； 4 RESTORE DATABASE； 5 RECOVER DATABASE； 6 ALTER DATABASE OPEN RESETLOGS； 7 }； With reference to this scenario， which statement is true？（）A RMAN recovers up to log sequence 230， but not including 230.B RMAN returns an error because the log sequence number mentioned in the command should be 229.C RMAN returns an error because the log sequence number mentioned in the command may never be missing.D RMAN recovers up to and including log sequence 229 but then returns an error because log sequence 230 is missing.
单选题
Your database operates in ARCHIVELOGmode. The redo log files are not multiplexed and one of the online redo logs is missing. The missing redo log sequence， 230， is not archived and it contained information from 10：35 a.m. onwards. The current time is 11：00 a.m. Because of a disk crash， you executed the following command to perform an incomplete recovery： RMAN> RUN { 2> SET UNTIL SEQUENCE 230 THREAD 1； 3> ALTER DATABASE MOUNT； 4> RESTORE DATABASE； 5> RECOVER DATABASE； 6> ALTER DATABASE OPEN RESETLOGS； 7> }； With reference to this scenario， which statement is true？（）
A
RMAN recovers up to log sequence 230， but not including 230.
B
RMAN returns an error because the log sequence number mentioned in the command should be 229.
C
RMAN returns an error because the log sequence number mentioned in the command may never be missing.
D
RMAN recovers up to and including log sequence 229 but then returns an error because log sequence 230 is missing.
参考解析
解析：
暂无解析
相关考题：
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？（）A、increase the size of the redo log bufferB、increase the number of redo log groupsC、increase the number of log writer processesD、increase the number of ARCn processesE、change the appropriate LOG_ARCHIVE_DEST_n parameter to place the archived log files in a separate location
You performed an incomplete recovery and opened the database with the RESETLOGS option. The LOG_ARCHIVE_FORMAT parameter is set to ’ora_%t_%s_%r.log’. Which statement regarding the archived redo log files， created in an earlier incarnation of the database，is true？（）A、 The archived redo log files will be overwritten.B、 The archived redo log files are deleted automatically.C、 The archived redo log files should be moved to some other location.D、 The archived redo log files are still maintained because the file names are unique.
You are maintaining your OLTP database in Oracle10g. While observing the performance of the database， you find that the log switch occurs more than once for every 20 minutes， affecting the database performance. Which factor is responsible for frequent log switches？（） A、the value of the UNDO_RETENTION initialization parameterB、the value of the optimal redo log file size provided by the Redo Logfile Size AdvisorC、the online redo log files sizeD、the number of redo log members in a group
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.
You executed the STARTUP MOUNT command to start your database. For which database operation do you need to start the database in the MOUNT state？（）A、renaming the control filesB、dropping a user in your databaseC、enabling or disabling redo log archivingD、dropping a tablespace in your databaseE、re-creating the control files， after you lost all the control files in your 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
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.
In your database， online redo log files are multiplexed and one of the members in a group is lost due to media failure. How would you recover the lost redo log member？（）A、import the database from the last exportB、restore all the members in the group from the last backupC、drop the lost member from the database， and then add a new member to the groupD、restore all the database files from the backup， and then perform a complete recovery E、restore all the database files from the backup， and then perform an incomplete recovery
You are using Oracle Database 10g. You performed an incomplete recovery of your database and opened the database with the RESETLOGS option. What is the effect of opening the database with the RESETLOGS option？ （）A、This operation resets the SCN for the database.B、This operation creates a new incarnation of the database.C、This operation moves all the redo log files to a different location.D、This operation deletes the old redo log files and creates new redo log files.E、This operation updates all current datafiles and online redo logs and all subsequent archived redo logs with a new RESETLOGS SCN and time stamp.
单选题You are maintaining your OLTP database in Oracle10g. While observing the performance of the database， you find that the log switch occurs more than once for every 20 minutes， affecting the database performance. Which factor is responsible for frequent log switches？（）Athe value of the UNDO_RETENTION initialization parameterBthe value of the optimal redo log file size provided by the Redo Logfile Size AdvisorCthe online redo log files sizeDthe number of redo log members in a group
单选题Your boss at Certkiller .com wants you to clarify Oracle 10g. Which statement regarding the usage of redo log files during instance recovery is true？（）ATransactions are rolled back using redo log files.BTransactions are rolled forward using redo log files.CTransactions are rolled back using redo log files and archived log files.DTransactions are rolled forward using redo log files and rolled back using redo log files.
单选题You performed an incomplete recovery and opened the database with the RESETLOGS option. The LOG_ARCHIVE_FORMAT parameter is set to ’ora_%t_%s_%r.log’. Which statement regarding the archived redo log files， created in an earlier incarnation of the database，is true？（）A The archived redo log files will be overwritten.B The archived redo log files are deleted automatically.C The archived redo log files should be moved to some other location.D The archived redo log files are still maintained because the file names are unique.
单选题You executed the STARTUP MOUNT command to start your database. For which database operation do you need to start the database in the MOUNT state？（）Arenaming the control filesBdropping a user in your databaseCenabling or disabling redo log archivingDdropping a tablespace in your databaseEre-creating the control files， after you lost all the control files in your database
多选题You configured the Flash Recovery Area （FRA） for your database. The database instance is running inARCHIVELOG mode. The default location for the archived redo log files is the Flash Recovery Area. Which twofiles are removed automatically if the space is required in the FRA as per the retention policy（）AFlashback log filesBBackups that have become obsoleteCUser managed backups of the data files and control filesDArchived redo log files that have multiple copies in a different archive location and not backed up
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
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
多选题You are using Oracle Database 10g. You performed an incomplete recovery of your database and opened the database with the RESETLOGS option. What is the effect of opening the database with the RESETLOGS option？ （）AThis operation resets the SCN for the database.BThis operation creates a new incarnation of the database.CThis operation moves all the redo log files to a different location.DThis operation deletes the old redo log files and creates new redo log files.EThis operation updates all current datafiles and online redo logs and all subsequent archived redo logs with a new RESETLOGS SCN and time stamp.
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In your database， online redo log files are multiplexed and one of the members in a group is lost due to media failure？ How would you recover the lost redo log member？（）A import the database from the last exportB restore all the members in the group from the last backupC drop the lost member from the database and then add a new member to the groupD restore all the database files from the backup and then perform a complete recoveryE restore all the database files from the backup and then perform an incomplete recovery
单选题You configured the Flash Recovery Area for your database. The database instance has been startedin ARCHIVELOG mode and the LOG_ARCHIVE_DEST_1 parameter is not set. What will be the implications on the archiving and the location of archive redo log files（）AArchiving will be disabled because the destination for the redo log files is missing.BThe database instance will shut down and the error details will be logged in the alert log file.CArchiving will be enabled and the destination for the archived redo log file will be set to the FlashRecovery Area implicitly.DArchiving will be enabled and the location for the archive redo log file will be created in the defaultlocation $ORACLE_HOME/log.