单选题You executed the following command to start the database： SQL STARTUP ORACLE instance started. Total System Global Area 281018368 bytes Fixed Size 789000 bytes Variable Size 229635576 bytes Database Buffers 50331648 bytes Redo Buffers 262144 bytes ORA-00205： error in identifying controlfile， check alert log for more info Which view would you query at this stage to investigate this missing control file？（）AV$INSTANCEBV$CONTROLFILECDBA_CONTROL_FILESDV$DATABASE_PROPERTIESEV$CONTROLFILE_RECORD_SECTION
单选题
You executed the following command to start the database： SQL> STARTUP ORACLE instance started. Total System Global Area 281018368 bytes Fixed Size 789000 bytes Variable Size 229635576 bytes Database Buffers 50331648 bytes Redo Buffers 262144 bytes ORA-00205： error in identifying controlfile， check alert log for more info Which view would you query at this stage to investigate this missing control file？（）
A
V$INSTANCE
B
V$CONTROLFILE
C
DBA_CONTROL_FILES
D
V$DATABASE_PROPERTIES
E
V$CONTROLFILE_RECORD_SECTION
参考解析
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相关考题：
Youexecutedthefollowingcommandtostartthedatabase：SQLSTARTUPORACLEinstancestarted.TotalSystemGlobalArea281018368bytesFixedSize789000bytesVariableSize229635576bytesDatabaseBuffers50331648bytesRedoBuffers262144bytesORA-00205：errorinidentifyingcontrolfile，checkalertlogformoreinfoWhichviewwouldyouqueryatthisstagetoinvestigatethismissingcontrolfile？（）A.V$INSTANCEB.V$CONTROLFILEC.DBA_CONTROL_FILESD.V$DATABASE_PROPERTIESE.V$CONTROLFILE_RECORD_SECTION
What are the consequences of executing the SHUTDOWN ABORT command？ （）A、The database files are synchronized.B、Uncommitted changes are not rolled back.C、The database is closed， but the instance is still started.D、Database buffers and redo buffers are not written to the disk.E、The database undergoes automatic media recovery during the next startup.
Upon starting your database， you receive the following error： SQL startup ORACLE instance started. Total System Global Area 171581440 bytes Fixed Size 1298640 bytes Variable Size 146804528 bytes Database Buffers 20971520 bytes Redo Buffers 2506752 bytes Database mounted. ORA-00313： open failed for members of log group 1 of thread 1 ORA-00312： online log 1 thread 1： ’/oracle01/oradata/orcl/redo01.log’ ORA-00312： online log 1 thread 1： ’/oracle01/oradata/orcl/redo01a.log’ You can choose from the following steps： a. Restore the database datafiles. b. Issue the alter database clear unarchived logfile group 1 command. c. Issue the alter database open command. d. Issue the alter database open resetlogs command. e. Recover the database using point-in-time recovery. f. Issue the Startup Mount command to mount the database. g. Back up the database. Which is the correct order of these steps in this case？（）A、a， f， e， d， gB、f， e， dC、f， b， c， gD、a， f， cE、The database cannot be recovered.
Which of the following is true about the MPLS header and its EXP field size？（）A、The MPLS header is 2 bytes，and the EXP field is 3 bits long.B、The MPLS header is 1 byte，and the EXP field is 3 bits long.C、The MPLS header is 4 bytes，and the EXP field is 3 bits long.D、The MPLS header is 3 bytes，and the EXP field is 3 bits long.
You executed the following command to start the database： SQL STARTUP ORACLE instance started. Total System Global Area 281018368 bytes Fixed Size 789000 bytes Variable Size 229635576 bytes Database Buffers 50331648 bytes Redo Buffers 262144 bytes ORA-00205： error in identifying controlfile， check alert log for more info Which view would you query at this stage to investigate this missing control file？（）A、V$INSTANCEB、V$CONTROLFILEC、DBA_CONTROL_FILESD、V$DATABASE_PROPERTIESE、V$CONTROLFILE_RECORD_SECTION
You are maintaining your database in Oracle10g. You have set the value of the STATISTICS_LEVEL initialization parameter to TYPICAL and the value of the FAST_START_MTTR_TARGET parameter to 900 seconds. To increase the performance of the database， you want to determine the log file size that should equal the minimum size of all the online redo log files. Which column will enable you to perform the desired task？（）A、 the WRITES_LOGFILE_SIZE column of the V$INSTANCE_RECOVERY viewB、 the column of the V$INSTANCE_RECOVERY viewC、 the OPTIMAL_LOGFILE_SIZE column of the V$INSTANCE_RECOVERY viewD、 the LOG_FILE_SIZE_REDO_BLKS column of the V$INSTANCE_RECOVERY view
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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）
You find that the database performance degrades while you backup the PROD database using Recovery Manager （RMAN）. The PROD database is running in shared server mode. The database instance is currently using 60% of total operating system memory. You suspect the shared pool fragmentation to be the reason. Which action would you consider to overcome the performance degradation？（）A、Configure Java Pool to cache the java objects.B、Configure Streams Pool to enable parallel processing.C、Increase Shared Pool size to cache more PL/SQL objects.D、Increase Database Buffer Cache size to increase cache hits.E、Configure Large Pool to be used by RMAN and shared server.F、Increase the total System Global Area （SGA） size to increase memory hits.
You have lost all your online redo logs. As a result， your database has crashed. You have tried to restart the database and clear the online redo log files， but when you try to open the database you get the following error. SQL startup ORACLE instance started. Total System Global Area 167395328 bytes Fixed Size 1298612 bytes Variable Size 142610252 bytes Database Buffers 20971520 bytes Redo Buffers 2514944 bytes Database mounted. ORA-00313： open failed for members of log group 2 of thread 1 ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02a.log ORA-27037： unable to obtain file status Linux Error： 2： No such file or directory Additional information： 3 ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02.log ORA-27037： unable to obtain file status Linux Error： 2： No such file or directory Additional information： 3 SQL alter database clear logfile group 2； alter database clear logfile group 2 * ERROR at line 1： ORA-01624： log 2 needed for crash recovery of instance orcl （thread 1） ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02.log ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02a.log What steps must you take to resolve the error？（） a. Issue the recover database redo logs command. b. Issue the Startup Mount command to mount the database. c. Restore the last full database backup. d. Perform a point-in-time recovery， applying all archived redo logs that are available. e. Restore all archived redo logs generated during and after the last full database backup. f. Open the database using the alter database open resetlogs command. g. Issue the alter database open command.A、b， a， fB、e， b， a， fC、e， b， a， gD、b， a， gE、c， e， b， d， f
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You work as a database administrator for Certkiller .com. You find that the database performance degrades while you backup the Certkiller database using Recovery Manager （RMAN）. The Certkiller database is running in shared server mode. The database instance is currently using 60% of total operating system memory. You suspect the shared pool fragmentation to be the reason. Which action would you consider to overcome the performance degradation？（）A、Configure Java Pool to cache the java objects.B、Configure Streams Pool to enable parallel processing.C、Increase Shared Pool size to cache more PL/SQL objects.D、Increase Database Buffer Cache size to increase cache hits.E、Configure Large Pool to be used by RMAN and shared server.F、Increase the total System Global Area （SGA） size to increase memory hits.
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单选题You find that the database performance degrades while you backup the PROD database using Recovery Manager （RMAN）. The PROD database is running in shared server mode. The database instance is currently using 60% of total operating system memory. You suspect the shared pool fragmentation to be the reason. Which action would you consider to overcome the performance degradation？（）AConfigure Java Pool to cache the java objects.BConfigure Streams Pool to enable parallel processing.CIncrease Shared Pool size to cache more PL/SQL objects.DIncrease Database Buffer Cache size to increase cache hits.EConfigure Large Pool to be used by RMAN and shared server.FIncrease the total System Global Area （SGA） size to increase memory hits.
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单选题You have executed this command to change the size of the database buffer cache： SQL ALTER SYSTEM SET DB_CACHE_SIZE=2516582； System altered. To verify the change in size， you executed this command：SQL SHOW PARAMETER DB_CACHE_SIZENAME TYPE VALUE ------------------- ----------- ------------------ db_cache_size big integer 4194304 Why is the value set to 4194304 and not to 2516582（）ABecause 4194304 is the granule sizeBBecause 4194304 is the standard block sizeCBecause 4194304 is the largest nonstandard block size defined in the databaseDBecause 4194304 is the total size of data already available in the database buffer cache
单选题Upon starting your database， you receive the following error： SQL startup ORACLE instance started. Total System Global Area 171581440 bytes Fixed Size 1298640 bytes Variable Size 146804528 bytes Database Buffers 20971520 bytes Redo Buffers 2506752 bytes Database mounted. ORA-00313： open failed for members of log group 1 of thread 1 ORA-00312： online log 1 thread 1： ’/oracle01/oradata/orcl/redo01.log’ ORA-00312： online log 1 thread 1： ’/oracle01/oradata/orcl/redo01a.log’ You can choose from the following steps： a. Restore the database datafiles. b. Issue the alter database clear unarchived logfile group 1 command. c. Issue the alter database open command. d. Issue the alter database open resetlogs command. e. Recover the database using point-in-time recovery. f. Issue the Startup Mount command to mount the database. g. Back up the database. Which is the correct order of these steps in this case？（）Aa， f， e， d， gBf， e， dCf， b， c， gDa， f， cEThe database cannot be recovered.
单选题You are maintaining your database in Oracle10g. You have set the value of the STATISTICS_LEVEL initialization parameter to TYPICAL and the value of the FAST_START_MTTR_TARGET parameter to 900 seconds. To increase the performance of the database， you want to determine the log file size that should equal the minimum size of all the online redo log files. Which column will enable you to perform the desired task？（）A the WRITES_LOGFILE_SIZE column of the V$INSTANCE_RECOVERY viewB the column of the V$INSTANCE_RECOVERY viewC the OPTIMAL_LOGFILE_SIZE column of the V$INSTANCE_RECOVERY viewD the LOG_FILE_SIZE_REDO_BLKS column of the V$INSTANCE_RECOVERY view
单选题You have executed this command to change the size of the database buffer cache： SQL ALTER SYSTEM SET DB_CACHE_SIZE=2516582； System altered. To verify the change in size， you executed this command：SQL SHOW PARAMETER DB_CACHE_SIZENAME TYPE VALUE ------------------- ----------- ------------------ db_cache_size big integer 4194304 Why is the value set to 4194304 and not to 2516582（）ABecause 4194304 is the granule sizeBBecause 4194304 is the standard block sizeCBecause 4194304 is the largest nonstandard block size defined in the databaseDBecause 4194304 is the total size of data already available in the database buffer cache
单选题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（）AThe command succeeds only if Automatic Memory Management is not enabled.BThe command succeeds， but you need to restart the database for changes to take effect.CThe command returns an error because the size of the redo log buffer cannot be changed dynamically.DThe parameter value is changed and it comes into effect as soon as space becomes available in theSystem Global Area （SGA）
单选题You executed the following command to start the database： SQL STARTUP ORACLE instance started. Total System Global Area 281018368 bytes Fixed Size 789000 bytes Variable Size 229635576 bytes Database Buffers 50331648 bytes Redo Buffers 262144 bytes ORA-00205： error in identifying controlfile， check alert log for more info Which view would you query at this stage to investigate this missing control file？（）AV$INSTANCEBV$CONTROLFILECDBA_CONTROL_FILESDV$DATABASE_PROPERTIESEV$CONTROLFILE_RECORD_SECTION
单选题You work as a database administrator for Certkiller .com. You find that the database performance degrades while you backup the Certkiller database using Recovery Manager （RMAN）. The Certkiller database is running in shared server mode. The database instance is currently using 60% of total operating system memory. You suspect the shared pool fragmentation to be the reason. Which action would you consider to overcome the performance degradation？（）AConfigure Java Pool to cache the java objects.BConfigure Streams Pool to enable parallel processing.CIncrease Shared Pool size to cache more PL/SQL objects.DIncrease Database Buffer Cache size to increase cache hits.EConfigure Large Pool to be used by RMAN and shared server.FIncrease the total System Global Area （SGA） size to increase memory hits.
多选题What are the consequences of executing the SHUTDOWN ABORT command？ （）AThe database files are synchronized.BUncommitted changes are not rolled back.CThe database is closed， but the instance is still started.DDatabase buffers and redo buffers are not written to the disk.EThe database undergoes automatic media recovery during the next startup.
单选题Which of the following is true about the MPLS header and its EXP field size？（）AThe MPLS header is 2 bytes，and the EXP field is 3 bits long.BThe MPLS header is 1 byte，and the EXP field is 3 bits long.CThe MPLS header is 4 bytes，and the EXP field is 3 bits long.DThe MPLS header is 3 bytes，and the EXP field is 3 bits long.
多选题You are managing an Oracle Database 11g database running in ARCHIVELOG mode. The FlashRecovery Area is specified as the destination for the archived redo log files. You notice this warning in thealert log file： ORA-19815： WARNING:// db_recovery_file_dest_size of 3221225472 bytes is 100.00% used， and has 0remaining bytes available. What would you do to reclaim the used space in the Flash Recovery Area（）ABack up the Flash Recovery Area.BDecrease the retention time for the database backup and flashback log files.CManually delete all the archived log files from the Flash Recovery Area by using operating system （OS）commands.DManually delete all the expired backup sets from the Flash Recovery Area by using operating system（OS） commands.
单选题You have lost all your online redo logs. As a result， your database has crashed. You have tried to restart the database and clear the online redo log files， but when you try to open the database you get the following error. SQL startup ORACLE instance started. Total System Global Area 167395328 bytes Fixed Size 1298612 bytes Variable Size 142610252 bytes Database Buffers 20971520 bytes Redo Buffers 2514944 bytes Database mounted. ORA-00313： open failed for members of log group 2 of thread 1 ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02a.log ORA-27037： unable to obtain file status Linux Error： 2： No such file or directory Additional information： 3 ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02.log ORA-27037： unable to obtain file status Linux Error： 2： No such file or directory Additional information： 3 SQL alter database clear logfile group 2； alter database clear logfile group 2 * ERROR at line 1： ORA-01624： log 2 needed for crash recovery of instance orcl （thread 1） ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02.log ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02a.log What steps must you take to resolve the error？（） a. Issue the recover database redo logs command. b. Issue the Startup Mount command to mount the database. c. Restore the last full database backup. d. Perform a point-in-time recovery， applying all archived redo logs that are available. e. Restore all archived redo logs generated during and after the last full database backup. f. Open the database using the alter database open resetlogs command. g. Issue the alter database open command.Ab， a， fBe， b， a， fCe， b， a， gDb， a， gEc， e， b， d， f
单选题You recently created a database and configured the SPFILE with the following parameter settings to ensure that Oracle automatically adjusts the memory for the Program Global Area （PGA）： SORT_AREA_SIZE = 150M HASH_AREA_SIZE = 150M BITMAP_MERGE_AREA_SIZE = 150M CREATE_BITMAP_AREA_SIZE = 150M WORKAREA_SIZE_POLICY = AUTO You have not included the PGA_AGGREGATE_TARGET initialization parameter in the SPFILE and the System Global Area （SGA） is currently sized at 4G. What is the total PGA memory allocated across all database server processes？（）A 10MB 400MC 600MD 800M