You work as a database administrator for Certkiller .com. Redo log files are not multiplexed in your database. Redo log blocks are corrupted in group 2， and archiving has stopped. All the redo logs are filled and database activity is halted. Database writer has written everything to disk.
Which command would you execute to proceed further？（）
A.RECOVER LOFIEL BLOCK GROUP 2；
B.ALTER DATABASE DROP LOGFILE GROUP 2；
C.ALTER DATABASE CLEAR LOGFILE GROUP 2；
D.ALTER DATABASE RECOVER LOGFILE GROUP 2；
E.ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 2；
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A.It degrades the run time and compiler performance.
B.It provides better run time and compiler performance.
C.It provides better optimization of the statement during parse time.
D.It forces the rule based optimizer to be used for statement optimization.
E.It provides better run time performance but slightly degraded compiler performance.
F.It provides better run time performance but slightly degraded run time performance.
You work as a database administrator for Certkiller .com. You find that reports are running for a long time in your data warehousing applications. You suspect a lack of indexes is the reason for the performance degradation.
Which advisory component would you refer to， in order to determine the appropriate indexes？（）
A.Memory Advisors
B.Segment Advisors
C.SQL Tuning and Access Advisors
D.Automated Workload Repository （AWR）
E.Automatic Database Diagnostic Monitor （ADDM）
Two database users， Jack and Bill， are accessing the Certkiller STAFF table of the Certkiller DB database. When Jack modifies a value in the table， the new value is invisible to Bill.
Which is the modified value invisible to Bill？（）
A.The modified data are not available on disk.
B.The modified data have been flushed out from memory.
C.The modified rows of the Certkiller STAFF table have been locked.
D.Jack has not committed the changes after modifying the value.
E.Both users are accessing the database from two different machines.
You work as a database administrator for Certkiller .com. As a result of performance analysis， you created an index on theprod_namecolumn of the
Certkiller prodtable， which contains about ten thousand rows. Later， you updated a product name in the table.
How does this change affect the index？（）
A.A leaf will be marked as invalid.
B.An update in a leaf row takes place.
C.The index will be updated automatically at commit.
D.A leaf row in the index will be deleted and inserted.
E.The index becomes invalid when you make any updates
A.use enterprise manager
B.use DBMS_SQL package
C.use DBMS_AWR package
D.use PRVT_WORKLOAD package
E.query the AWR snapshot repository objects
F.use DBMS_WORKLOAD_REPOSITORY package
You are working on the Certkiller database.
What is the default name of the alert log file in this database？（）
A.alert_ Certkiller .log
B.alertlog_ Certkiller .log
C.alert_log_ Certkiller .log
D.Certkiller _alert_log.log
E.log_alert_： Certkiller .log
F.trace_alert_ Certkiller .log
A.The trace file
B.The fixed views
C.The data dictionary views
D.The operating system log fields
E.The dynamic performance views.
A.The instance would hang.
B.The instance needs to be shut down.
C.The instance would be in the open state.
D.The instance would abort in such cases.
E.The instance would be in the open and invalid state.
F.The instance would in the open state， but all the background processes will be restarted.
A.By multiplexing the control files
B.By multiplexing the redo log files
C.By decreasing the size of redo log files
D.By configuring mean time to recover （MTTR） to a lower value
E.By setting the UNDO_RETENTION parameter to a higher value
A.Increase the undo return
B.Create more undo segments
C.Create another undotablespace
D.Increase the size of the undotablespace
最新试题
According to your backup strategy， you performed an incremental level 0 backup of your database. Which statement regarding this backup is true？（）
You have been recently hired as a database administrator. Your senior manager asks you to study the production database server and submit a report on the settings done by the previous DBA. While observing the server settings， you find that the following parameter has been set in the parameter file of the database： REMOTE_OS_AUTHENT = TRUE What could have been the reason to set this parameter as TRUE？（）
The following are the details of your database： Instance name：test Host name：tech1.us.oracle.com IP address：145.33.230.186 Enterprise Manager Console HTTP Port number：5500 You started the database instance and you want to manage your database remotely with Enterprise Manager through a Web browser. Which two URLs would you use to access the Database Control？（）
In your Oracle 10g database ， you have scheduled a job to update the optimizer statistics at 05：00 pm every Friday. The job has successfully completed. Which three pieces of information would you check to confirm that the statistics have been collected？（）
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Which statement is true about the loss of systemcritical data files in ARCHIVELOG mode？（）
In your database， the STATISTICS_LEVEL initialization parameter is set to BASIC. What is the impact of this setting？（）
Your database is configured in NOARCHIVELOG mode. All the control files have been lost due to a hard disk failure but the data files are not lost. You have the closed whole database backup available to you. Which two statements are true in this scenario？（）
You started a long transaction. Before committing， you executed a query on one of the tables currently being modified. You received the following error： ORA-01555： snapshot too old How would you prevent such an error in the future？（）