单选题You notice that the performance of your production 24/7 Oracle database significantly degraded.Sometimes you are not able to connect to the instance because it hangs. You do not want to restart thedatabase instance.How can you detect the cause of the d

第1题：

You specify a nonzero value for the MEMORY_TARGET initialization parameter，but do not set the PGA_AGGREGATE_TARGET or the SGA_TARGET parameters. You restart your database instance.  Which statement about the result is true？（）

• A、 The database instance starts，and Oracle sets the default value of SGA_TARGET to the same value as SGA_MAX_SIZE
• B、 The database instance starts，and Oracle automatically tunes memory and allocates 60 percent to the  SGA and 40 percent to the PGA
• C、 The database instance starts，but Automatic Memory Management is disabled
• D、 The database instance will not start because you did not specify the PGA_AGGREGATE_TARGET or SGA_TARGET parameter

第2题：

You work as a database administrator for Certkiller .com. In your production  database， the size of Database Buffer Cache needs to be increased immediately for the current as well as future instances of the database. The Oracle instance has been configured to accommodate any changes in the size of the memory structures. At this is production database， you want to accomplish this task with no impact on the user’s connections.  Which activity must you have completed before accomplishing this task？（）

• A、You must have started the database instance in restricted mode.
• B、You must have started the database instance inNORMALmode.
• C、You must have started the database instance with server parameter file.
• D、You must have started the database instance but must not have mounted.
• E、You must have started the database instance but must not have opened.

第3题：

Your production database uses an Automatic Storage Management （ASM） instance to manage its files. You want to add a new disk group to the ASM instance to manage the increased data load. What action would you perform to include the new disk group in the ASM instance without causing any impact on the currently connected users？（）

• A、mount the new disk group in the ASM instance
• B、restart the ASM instance and the production database instance
• C、register the new disk groups in the production database instance
• D、restart the ASM instance without restarting the production database instance
• E、include the new disk group in the ASM_DISKSTRING parameter in the parameter file and restart the ASM instance

第4题：

In your production database you want to use an Automatic Storage Management （ASM） instance to manage the database files. Which option would you use to migrate the database files from a non-ASM instance to an ASM instance？（）

• A、Oracle Migration Assistant
• B、Recovery Manager （RMAN）
• C、Oracle Data Pump Export and Import
• D、conventional Oracle Export and Import
• E、operating system utilities to copy the files to the ASM instance

第5题：

You work as a database administrator for Supportcenter.cn. In a production environment， users complain about the slow response time when accessing the database. You have not optimized the memory usage of the Oracle instance and you suspect the problem to be with the memory. To which type of object would you refer to determine the cause of the slow response？（）

• A、The trace file
• B、The fixed views
• C、The data dictionary views
• D、The operating system log fields
• E、The dynamic performance views.

第6题：

Your database instance is running.You are not able to access Oracle Enterprise Manager Database Control because the listener is not started.Which tool or utility would you use to start the listener?（）

• A、Oracle Net Manager
• B、Listener Control utility
• C、Database Configuration Assistant
• D、Oracle Net Configuration Assistant

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第13题：

n your production database you want to use an Automatic Storage Management （ASM） instance to manage the database files. Which option would you use to migrate the database files from a non-ASM instance to an ASM instance？（）

• A、 Oracle Migration Assistant
• B、 Recovery Manager （RMAN）
• C、 Oracle Data Pump Export and Import
• D、 conventional Oracle Export and Import
• E、 operating system utilities to copy the files to the ASM instance

第14题：

You notice a performance change in your production Oracle 12c database. You want to know which change caused this performance difference. Which method or feature should you use?（）

• A、Compare Period ADDM report
• B、AWR Compare Period report
• C、Active Session History (ASH) report
• D、Taking a new snapshot and comparing it with a preserved snapshot

第15题：

You work as a database administrator for Supportcenter.cn. Client connection requests are failing because the listener is not responding. You want to forward client connect requests to another listener if one listener is not responding. How do you achieve this？（）

• A、Enable instance failover
• B、Configure shared server
• C、Enable database failover
• D、Enable connect-time failover
• E、Enable Transparent Application Failover （TAF）

第16题：

You notice that the performance of your production 24/7 Oracle database significantly degraded.Sometimes you are not able to connect to the instance because it hangs. You do not want to restart thedatabase instance.How can you detect the cause of the degraded performance?（）

• A、Enable Memory Access Mode, which reads performance data from SGA.
• B、Use emergency monitoring to fetch data directly from SGA analysis.
• C、Run Automatic Database Diagnostic Monitor (ADDM) to fetch information from the latest Automatic Workload Repository (AWR) snapshots.
• D、Use Active Session History (ASH) data and hang analysis in regular performance monitoring.
• E、Run ADDM in diagnostic mode.

第17题：

In your production database you want to use an Automatic Storage Management （ASM） instance to manage the database files.  Which option would you use to migrate the database files from a non/x7fASM instance to an ASM instance？（）

• A、Oracle Migration Assistant
• B、Recovery Manager （RMAN）
• C、Oracle Data Pump Export and Import
• D、conventional Oracle Export and Import
• E、operating system utilities to copy the files to the ASM instance

第18题：

You are managing an Oracle Database 11g database. You want to ensure the recovery of thedatabase to the point of failure.  Which configuration will you do to accomplish the task（）

• A、Multiplex all database files
• B、Configure the Flash Recovery Area.
• C、Configure the database instance for ARCHIVELOG mode.
• D、Configure the FAST_START_MTTR_TARGET initialization parameter.

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