The database users are connecting to the PROD database from different applications， thereby degrading the database performance. The senior database administrator suspects the large number of concurrent connections to be the reason for low performance and asks you to restrict the number concurrent connections per database user to one. Which action would you take to achieve this objective？ （）A、set the SESSIONS to 1 in the parameter fileB、grant SINGLE SESSION privilege to all of the usersC、set the SESSIONS_PER_USER to 1 in the users’ profileD、grant RESTRICTED SESSION privilege to all of the database usersE、create a role with SINGLE SESSION privilege and assign the role to the users
The database users are connecting to the PROD database from different applications， thereby degrading the database performance. The senior database administrator suspects the large number of concurrent connections to be the reason for low performance and asks you to restrict the number concurrent connections per database user to one. Which action would you take to achieve this objective？ （）
- A、set the SESSIONS to 1 in the parameter file
- B、grant SINGLE SESSION privilege to all of the users
- C、set the SESSIONS_PER_USER to 1 in the users’ profile
- D、grant RESTRICTED SESSION privilege to all of the database users
- E、create a role with SINGLE SESSION privilege and assign the role to the users
相关考题：
A retail customer has a database application that is accessed by a large number of people through a web interface from multiple remote locations. Which questions will provide the information necessary to design the best performing storage solution of the following？（）A、How many web servers will be connected to the database？B、How many concurrent applications will run against the database？C、How many concurrent users will be accessing the database？D、What are the types of transactions run against the database？
A customer has a database application that is accessed by a large number of people through a web interface from multiple remote locations. Which of the following questions will provide the information necessary to design the best performing storage solution？（）A、How many web servers will be connected to the database？B、Will the database be run on a Windows solution？C、How many concurrent users will be accessing the database？D、What are the types of transactions run against the database？
A number of applications issue the following SQL statement:SELECT d.deptno, e.empno, e.salary FROM department d INNER JOIN employee e ON d.deptno = e.deptnoA database administrator wishes to store this query within the database. Which of the following database objects can be used to accomplish this?（）A、AliasB、ViewC、SchemaD、Trigger
You find today’s performance of your production database to be the best ever. Therefore， you want to be notified in the future whenever the performance degrades by 10% of today’s performance. What is the first step that you would take to ensure this？（）A、create baseline metrics for today’s performanceB、write the current database metrics to a database table and create a trigger to compare with future database statisticsC、write the current database metrics to a flat file and create an operating script to compare with future database statisticsD、write the current database metrics to a database table and create a procedure to compare with future database statisticsE、write the current database metrics to a database table and submit a job using DBMS_JOB to compare with future database statistics
Your database instance is currently configured to support 1，500 connections. The Web applicationthat uses the database allows a large number of users to work with the database simultaneously. Someusers of the Web application do not interact with the server all the time. You want to increase the scalability by configuring the database instance to handle more connections. Asa DBA， which configuration would you set to support more than 1，500 connections at a time（）A、You would configure more listeners for the database.B、You would configure the database in shared server mode to use the connection pooling feature.C、You would increase the value of the PGA_AGGREGATE_TARGET initialization parameter that assigns more session memory to users.D、You would decrease the value of the PRIVATE_SGA resource limit in the profiles used by the users to accommodate more session information.
You observe that database performance has degraded over a period of time. While investigating the reason， you find that the size of the database buffer cache is not large enough to cache all the needed data blocks. Which advisory component would you refer to， in order to determine the required size of the database buffer cache？（） A、Memory AdvisorB、Segment AdvisorC、SQL Tuning AdvisorD、SQL Access AdvisorE、Automatic Database Diagnostic Monitor （ADDM）
A junior level Database Administrator erroneously deleted the database alert log while users were accessing the database. Which action should you take to recover the alert log？（） A、 Do nothing.B、 Restart the database.C、 Perform recovery on the database.D、 Restore the alert log from the last backup.
You work as a database administrator for Certkiller .com. Users in the Certkiller PROD database complain about the slow response when accessing the database. In the Active Session Waiting： Configuration page you find that the majority of the wait time is for the redo log buffer.Further investigation using the Run Queue graph and operating system tools reveals that the redo log files are on the same disks， and that the disk I/O for the redo log files is the reason for the performance degradation. Which two actions would you take to gain performance？（）A、Increase the size of redo log filesB、Increase the size of redo log bufferC、Increase the number of redo log filesD、Place the redo log files on a separate diskE、Decrease the number of redo log groups to twoF、Increate the number Log Writer （LGWR） process
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？（）A、to enable operating system authentication for a remote clientB、to restrict the scope of administration to identical operating systemsC、to allow the start up and shut down of the database from a remote clientD、to enable the administration of the operating system from a remote clientE、to disable the administration of the operating system from a remote client
You are using flat files as the data source for one of your data warehousing applications. You plan to move the data from the flat file structures to an Oracle database to optimize the application performance. In your database you have clustered tables. While migrating the data， you want to have minimal impact on the database performance and optimize the data load operation. Which method would you use to load data into Oracle database？（）A、use the external table populationB、use the Oracle Data Pump export and import utilityC、use the conventional path data load of SQL*Loader utilityD、use the direct path data load of Oracle export and import utility
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.
There is a problem with one of the disks used for your database and your system administrator informs you that the disk needs to be replaced. The replacement disk will not be available until tomorrow. There was only one data file on this disk； it belongs to the USERS tablespace in your PROD database. Your PROD database runs in ARCHIVELOG mode and nightly online backups are taken. The users need to be able to access the data in the USERS tablespace before the replacement disk arrives. You have already taken the USERS tablespace offline and have restored the data file from last night’s backup to a new disk. Which additional steps are required in order to make the USERS tablespace available？（）A、Only bring the tablespace back online.B、Only recover the tablespace and then bring the tablespace back online.C、Shut down the database， recover the data file and then start up the database.D、Issue the ALTER DATABASE RENAME FILE command， recover the tablespace， and then bring the tablespace online.E、Recover the tablespace， issue the ALTER DATABASE RENAME FILE command， and then bring the tablespace online.
In a new installation of Oracle Database 11g， you perform these activities： 1：Organize software and data on different subdirectories to avoid poor performance. 2：Use consistent naming conventions for database files. 3：Separate administrative information pertaining to the database in different directories. Which option corresponds to the type of activities you performed（）A、Oracle Managed FilesB、Oracle Grid ArchitectureC、Optimal Flexible ArchitectureD、Oracle database architectureE、Automatic Storage Management
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.
You are a database administrator for your company. The company uses a vendor company’s application that is based on a proprietary database. You query data from the application database and import the data into a SQL Server 2005 database. The application vendor provides you with a new OLE DB driver to be used when querying the application database. Company policy prohibits connections between the SQL Server database and the application database， except when querying this data. You need to provide a way to query data from the application database. What should you？（）A、Configure a Linked Server connection to the application database.B、Write a query that uses an OPENDATASOURCE command.C、Write a query that uses an OPENQUERY command.D、Configure a Remote Server connection to the application database.
单选题A junior level Database Administrator erroneously deleted the database alert log while users were accessing the database. Which action should you take to recover the alert log？（）A Do nothing.B Restart the database.C Perform recovery on the database.D Restore the alert log from the last backup.
多选题You are a database administrator for your company. The company uses a SQL Server 2005 application. Each night， data is imported into a database， and the database is then set to be read-only. During business hours， users run predefined and ad hoc queries. You need to monitor the servers performance during the day. What are two possible ways to achieve this goal？（）AUse the Lock Waits/sec performance counter.BUse the Number of Deadlocks/sec performance counter.CUse the Transactions/sec performance counter.DUse the Full Scans/sec performance counter.EUse the Batches/sec performance counter.
单选题You observe that a database performance has degraded over a period of time. While investigating the reason， you find that the size of the database buffer cache is not large enough to cache all the needed data blocks. Which advisory component would you refer to， in order to determine that required size of the database buffer cache？ （）A Memory AdvisorB Segment AdvisorC SQL Tuning AdvisorD SQL Access AdvisorE Automatic Database Diagnostic Monitor （ADDM）
单选题There is a problem with one of the disks used for your database and your system administrator informs you that the disk needs to be replaced. The replacement disk will not be available until tomorrow. There was only one data file on this disk； it belongs to the USERS tablespace in your PROD database. Your PROD database runs in ARCHIVELOG mode and nightly online backups are taken. The users need to be able to access the data in the USERS tablespace before the replacement disk arrives. You have already taken the USERS tablespace offline and have restored the data file from last night’s backup to a new disk. Which additional steps are required in order to make the USERS tablespace available？（）AOnly bring the tablespace back online.BOnly recover the tablespace and then bring the tablespace back online.CShut down the database， recover the data file and then start up the database.DIssue the ALTER DATABASE RENAME FILE command， recover the tablespace， and then bring the tablespace online.ERecover the tablespace， issue the ALTER DATABASE RENAME FILE command， and then bring the tablespace online.
单选题The database users are connecting to the PROD database from different applications， thereby degrading the database performance. The senior database administrator suspects the large number of concurrent connections to be the reason for low performance and asks you to restrict the number concurrent connections per database user to one. Which action would you take to achieve this objective？ （）Aset the SESSIONS to 1 in the parameter fileBgrant SINGLE SESSION privilege to all of the usersCset the SESSIONS_PER_USER to 1 in the users’ profileDgrant RESTRICTED SESSION privilege to all of the database usersEcreate a role with SINGLE SESSION privilege and assign the role to the users
单选题A consultant has been asked to do a performance analysis on a database server. Which subsystem should the consultant first analyze and why？（）ACPU，because the database replication process requires a considerable amount of CPU timeBMemory，because the buffer cache requires a large amount of memory to maintain the data in system memoryCDisk，because it is important to configure a sufficient number of disks to match the CPU processing powerDNetwork，because the data returned to the client from the server can be a large subset of the total database
单选题In a new installation of Oracle Database 11g， you perform these activities： 1. Organize software and data on different subdirectories to avoid poor performance. 2. Use consistent naming conventions for database files. 3. Separate administrative information pertaining to the database in different directories. Which optioncorresponds to the type of activities you performed（）AOracle Managed FilesBOracle Grid ArchitectureCOptimal Flexible ArchitectureDOracle database architectureEAutomatic Storage Management