考题
Which of the following is not responsibility of DBA(Data Base Administrator)?A.Database management system designB.Database schema definitionC.Database schema modificationD.Integrity constraint specification
考题
以下不属于数据库系统(DBS)的组成部分的是A.硬件系统B.数据库管理系统及相关软件C.文件系统D.数据库管理员(DataBase Administrator ,DBA)
考题
以下不属于数据库系统(DBS)的组成的是A.硬件系统B.数据库管理系统及相关软件C.文件系统D.数据库管理员(DataBase Administrator,DBA)
考题
You work as a database administrator for Certkiller .com. You received the following error while working on your database: ORA-01555: snapshot too old In which situation would you receive such an error?()A、You performed rollback after commit.B、If a log switch occurs in your database.C、Thearchiverfails to generate an archived log file.D、Instance recovery fails to find one of the redo log files.E、A long-running query is unable to get read-consistent image.F、If you perform manual undo management operations in auto mode.
考题
In order to find out how many database objects a user has created, which view would the DBA query in the Oracle data dictionary? ()A、DBA_USERS B、DBA_OBJECTS C、DBA_TS_QUOTAS D、DBA_TAB_PRIVS
考题
Your database is running In ARCIIIVELOG mode. One of the data files, USBRDATAOI. DBF, in the users tablespace is damaged and you need to recover the file until the point of failure. The backup for the data file is available. Which three files would be used in the user-managed recovery process performed by the database administrator (DBA)?() A、 redo logsB、 control fileC、 temporary files of temporary tablespaceD、 the latest backup of only the damaged data fileE、 the latest backup of all the data files In the USERS tablespace
考题
You are working as a DBA at NetFx Corporation. You discover that the SCOTT schema is deleted by mistake. You decide to flash the database back to the time when the schema existed. Which view will you query to determine the estimated size of the flashback data that you require for your current target retention?()A、 V$FLASHBACK_DATABASE_LOGB、 V$FLASHBACK_DATABASE_STATC、 V$DATABASED、 V$UNDOSTAT
考题
Which view will you use to view information regarding the jobs that are currently running in a database?()A、DBA_SCHEDULER_RUNNING_JOBSB、DBA_SCHEDULER_JOB_RUN_DETAILSC、DBA_SCHEDULER_JOBSD、DBA_SCHEDULER_JOB_LOG
考题
You are working on a 24x7 (available 24 hours per day, 7 days per week) production database. An operating system (OS) user deletes the alert log file accidentally. Which statement in this scenario is true?()A、The database crashes.B、The DBA needs to re-create the file.C、The file gets re-created automatically.D、The file gets restored automatically from the last backup.E、The DBA needs to perform a complete database recovery.F、The DBA needs to perform an incomplete database recovery.
考题
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.
考题
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
考题
What type of protection is implemented when the DBA issues the ALTER DATABASE SET STANDBY DATABASE PROTECTED; command?()A、The standby database is protected against write operations. B、The primary database is protected against write operations. C、The primary database is protected against data loss and data divergence. D、The standby database is protected against data loss and data divergence.
考题
You are working as a DBA on the decision support system. There is a business requirement to track and store all transactions for at least three years for a few tables in the database. Automatic undo management is enabled in the database. Which configuration should you use to accomplish this task?()A、 Enable Flashback Data Archive for the tables.B、 Specify undo retention guarantee for the database.C、 Enable supplemental logging for the database.D、 Query V$UNDOSTAT to determine the amount of undo that will be generated and create an undo tablespace for that size.E、 Create Flashback Data Archive on the tablespace on which the tables are stored.
考题
You are identifying dictionary objects in the Oracle database. Which of the following is a view in the data dictionary?() A、V$DATABASE B、DBA_TABLES C、SYSAUD$ D、EMP
考题
At 10:30 A.M., you ran a batch job by mistake, which executed a transaction in the database. The transaction identifier of the transaction that made to the changes in the database is 0500A00627B000. At 11:10 A.M., you stopped the batch job. Now, you want to identify the changes made to the database tables by the batch job. Which view will you query?()A、 DBA_PENDING_TRANSACTIONSB、 DBA_AUDIT_STATEMENTC、 V$FLASHBACK_DATABASE_STATSD、 FLASHBACK_TRANSACTION_QUERY
考题
he DBA is about to enable auditing on the Oracle database in an attempt to discover some suspicious activity. Audit trail information is stored in which of the following database object names?()A、SYS.SOURCE$ B、SYS.AUD$ C、DBA_SOURCE D、DBA_AUDIT_TRAIL
考题
单选题You are working as a DBA at NetFx Corporation. You discover that the SCOTT schema is deleted by mistake. You decide to flash the database back to the time when the schema existed. Which view will you query to determine the estimated size of the flashback data that you require for your current target retention?()A
V$FLASHBACK_DATABASE_LOGB
V$FLASHBACK_DATABASE_STATC
V$DATABASED
V$UNDOSTAT
考题
单选题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
考题
单选题You are working on a 24x7 (available 24 hours per day, 7 days per week) production database. An operating system (OS) user deletes the alert log file accidentally. Which statement in this scenario is true?()A
The database crashes.B
The DBA needs to re-create the file.C
The file gets re-created automatically.D
The file gets restored automatically from the last backup.E
The DBA needs to perform a complete database recovery.F
The DBA needs to perform an incomplete database recovery.
考题
单选题You are working on the APPDB database as a DBA. The database has a default Flashback Data Archive DFLA1 created on it. You issued the following command to drop the Flashback Archive FLA1: DROP FLASHBACK ARCHIVE fla1,What is the effect of this command?()A
The Flashback Archive FLA1 is dropped only if it is empty.B
The tablespace having Flashback Archive is dropped.C
The Flashback Archive FLA1 is dropped after moving the existing data in it to the default Flashback Archive.D
The Flashback Data Archive and historical data are dropped.
考题
单选题You want the user APP_DBA to administer the Oracle database from a remote machine. APP_DBA is granted the SYSDBA privilege to perform administrative tasks on the database. Which file is used by the Oracle database server to authenticate APP_DBA?()A
control fileB
password fileC
listener controller fileD
control file and password file
考题
单选题You are working as a DBA on the decision support system. There is a business requirement to track and store all transactions for at least three years for a few tables in the database. Automatic undo management is enabled in the database. Which configuration should you use to accomplish this task?()A
Enable Flashback Data Archive for the tables.B
Specify undo retention guarantee for the database.C
Enable supplemental logging for the database.D
Query V$UNDOSTAT to determine the amount of undo that will be generated and create an undo tablespace for that size.E
Create Flashback Data Archive on the tablespace on which the tables are stored.
考题
多选题Your database is running In ARCIIIVELOG mode. One of the data files, USBRDATAOI. DBF, in the users tablespace is damaged and you need to recover the file until the point of failure. The backup for the data file is available. Which three files would be used in the user-managed recovery process performed by the database administrator (DBA)?()Aredo logsBcontrol fileCtemporary files of temporary tablespaceDthe latest backup of only the damaged data fileEthe latest backup of all the data files In the USERS tablespace
考题
单选题You work as a database administrator for Supportcenter.cn. You find that users with DBA role are using more CPU resources than what is allocated in their profiles. Which action would you take to ensure that resources limits are imposed on these users?()A
Assign the DEFAULT profile to the usersB
Set the RESOURCE_LIMIT parameter to TRUE in the parameter fileC
Create a new profile with CPU restrictions and assign it to the usersD
Specify the users as members of the DEFAULT_CONSUMER_GROUPE
Revoke the DBA role and grant CONNECT and RESOURCE role to the users
考题
单选题Matthew has recently joined NetFx Corporation as a junior-level Database Administrator (DBA). He is asked by his supervisor to verify the database for data block corruptions. He uses the DBVERIFY utility and finds that two data blocks are corrupted in the database. What should Matthew use to identify the corrupted blocks as well as datafiles containing these blocks?()A
datafileB
alert logC
dynamic viewsD
control file script
考题
多选题Your database is running in ARCHIVELOG mode. One of the data files, USERDATA01.dbf, in the USERS tablespace is damaged and you need to recover the file until the point of failure. The backup for the datafile is available. Which three files would be used in the user-managed recovery process performed by the database administrator (DBA)?()ARedo logsBControl fileCThe latest backup of only the damaged data fileDThe latest backup of all the data file in the USERS tablespaceETemporary files of temporary tablespaceFArchive Logs since the latest backup to point of failure
考题
单选题At 10:30 A.M., you ran a batch job by mistake, which executed a transaction in the database. The transaction identifier of the transaction that made to the changes in the database is 0500A00627B000. At 11:10 A.M., you stopped the batch job. Now, you want to identify the changes made to the database tables by the batch job. Which view will you query?()A
DBA_PENDING_TRANSACTIONSB
DBA_AUDIT_STATEMENTC
V$FLASHBACK_DATABASE_STATSD
FLASHBACK_TRANSACTION_QUERY