以下关于SGA和PGA的叙述正确的是()A.PGA是SGA的一部分,SGA是共享的,但分配后的PGA是不共享的B.PGA是客户机内存的一部分,而SGA是服务器内存的一部分C.PGA和SGA都是服务器内存的一部分,前者是私有的,后者是共享的D.PGA与SGA的总和等于服务器主机内存的总和

题目
以下关于SGA和PGA的叙述正确的是()

A.PGA是SGA的一部分,SGA是共享的,但分配后的PGA是不共享的

B.PGA是客户机内存的一部分,而SGA是服务器内存的一部分

C.PGA和SGA都是服务器内存的一部分,前者是私有的,后者是共享的

D.PGA与SGA的总和等于服务器主机内存的总和


相似考题
参考答案和解析
参考答案:C
更多“以下关于SGA和PGA的叙述正确的是() ”相关问题
  • 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

    正确答案:B

  • 第2题:

    You are adding redo logs to the Oracle database. Creating a new redo log adds information to which of the following Oracle resources? ()

    • A、Shared pool 
    • B、Control file 
    • C、SGA 
    • D、PGA

    正确答案:B

  • 第3题:

    说明数据库内存结构中SGA和PGA的组成,以及这两个内存区存放信息的区别。


    正确答案: SGA区由数据缓冲区、共享池、重做日志缓冲区、大型池、JAVA池构成;PGA区由排序区、私有SQL区以及堆栈构成。
    SGA区是由Oracle分配的共享内存结构,包含一个数据库实例共享的数据和控制信息。当多个用户同时连接同一个实例时,SGA区数据供多个用户共享,所以SGA区又称为共享全局区。用户对数据库的各种操作主要在SGA区中进行。该内存区随数据库实例的创建而分配,随实例的终止而释放。PGA区是在用户进程连接数据库,创建一个会话时,由Oracle为用户分配的内存区域,保存当前用户私有的数据和控制信息,因此该区又称为私有全局区。每个服务器进程只能访问自己的PGA区,所有服务器进程PGA区总和即为实例的PGA区的大小。

  • 第4题:

    In Oracle 11g,by default which one of the following conditions implicitly enables Automatic PGA Memory Management?()  

    • A、 Setting a nonzero value for SGA_TARGET
    • B、 Configuring Automatic Shared Memory Management
    • C、 Configuring Automatic Memory Management
    • D、 Setting a nonzero value for SGA_MAX_SIZE and PGA_AGGREGATE_TARGET
    • E、 None of the above

    正确答案:B

  • 第5题:

    By setting the value of MEMORY_TARGET to zero and setting the value of SGA_TARGET to a nonzero value, you will enable which of the following memory-management options?()  

    • A、 Automatic PGA Memory Management
    • B、 Automatic SGA Memory Management
    • C、 Automatic Shared Memory Management
    • D、 Automatic Memory Management
    • E、 Manual SGA Memory Management
    • F、 None of the above

    正确答案:C

  • 第6题:

    单选题
    In Oracle 11g,by default which one of the following conditions implicitly enables Automatic PGA Memory Management?()
    A

     Setting a nonzero value for SGA_TARGET

    B

     Configuring Automatic Shared Memory Management

    C

     Configuring Automatic Memory Management

    D

     Setting a nonzero value for SGA_MAX_SIZE and PGA_AGGREGATE_TARGET

    E

     None of the above


    正确答案: D
    解析: 暂无解析

  • 第7题:

    单选题
    Examine the parameter setting in your database: Which statement is correct about the database?()
    A

    Automatic memory management is disabled because PGA_AGGREGATE_TARGET and SGA_TARGET are not set

    B

    The instance is started but the database will not be opened until PGA_AGGREGATE_TARGET and SGA_TARGET are set

    C

    The database is opened but users cannot perform transactions until PGA_AGGREGATE_TARGET and SGA_TARGET are set

    D

    Automatic memory management is enabled and, as per policy, 60% of the memory for System Global Area (SGA) and 40% of the memory for Program Global Area (PGA) will be distributed at startup


    正确答案: C
    解析: 暂无解析

  • 第8题:

    单选题
    Your database is running on the automatic Program Global Area (PGA) memory management and Shared Memory Management mode. You want to increase the memory available for the SQL work areas. What would you do?()
    A

     modify the HASH_AREA_SIZE initialization parameter

    B

     modify the PGA_AGGREGATE_TARGET initialization parameter

    C

     modify the WORK_AREASIZE_POLICY initialization parameter

    D

     increase the value of the SGA_TARGET initialization parameter

    E

     increase the value of the SGA_MAX_SIZE initialization parameter

    F

     increase the value of the SORT_AREA_SIZE initialization parameter


    正确答案: A
    解析: 暂无解析

  • 第9题:

    单选题
    By setting the value of MEMORY_TARGET to zero and setting the value of SGA_TARGET to a nonzero value, you will enable which of the following memory-management options?()
    A

     Automatic PGA Memory Management

    B

     Automatic SGA Memory Management

    C

     Automatic Shared Memory Management

    D

     Automatic Memory Management

    E

     Manual SGA Memory Management

    F

     None of the above


    正确答案: C
    解析: 暂无解析

  • 第10题:

    单选题
    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


    正确答案: B
    解析: 暂无解析

  • 第11题:

    单选题
    以下关于SGA和PGA的叙述正确的是()
    A

    PGA是SGA的一部分,SGA是共享的,但分配后的PGA是不共享的

    B

    PGA是客户机内存的一部分,而SGA是服务器内存的一部分

    C

    PGA和SGA都是服务器内存的一部分,前者是私有的,后者是共享的

    D

    PGA与SGA的总和等于服务器主机内存的总和


    正确答案: A
    解析: 暂无解析

  • 第12题:

    单选题
    Which of the following Oracle features is enabled by setting a nonzero value for the MEMORY_TARGET initialization parameter?()
    A

     Automatic PGA Memory Management

    B

     Automatic SGA Memory Management

    C

     Automatic Shared Memory Management

    D

     Automatic Memory Management

    E

     Manual SGA Memory Management

    F

     None of the above


    正确答案: C
    解析: 暂无解析

  • 第13题:

    You specify a nonzero value for the MEMORY_TARGET initialization parameter, but do not set thePGA_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

    正确答案:B

  • 第14题:

    For Oracle 11g, Oracle strongly recommends that you configure your database to use which of the following memory-management features?()  

    • A、 Automatic PGA Memory Management
    • B、 Automatic SGA Memory Management
    • C、 Automatic Shared Memory Management
    • D、 Automatic Memory Management
    • E、 Manual SGA Memory Management
    • F、 None of the above

    正确答案:D

  • 第15题:

    Which of the following Oracle features is enabled by setting a nonzero value for the MEMORY_TARGET initialization parameter?()  

    • A、 Automatic PGA Memory Management
    • B、 Automatic SGA Memory Management
    • C、 Automatic Shared Memory Management
    • D、 Automatic Memory Management
    • E、 Manual SGA Memory Management
    • F、 None of the above

    正确答案:D

  • 第16题:

    Oracle Instance由哪两个部分组成?()

    • A、Shared pool和Server process
    • B、Shared pool和Background process
    • C、SGA和user process
    • D、PGA和user process
    • E、SGA和Background process

    正确答案:E

  • 第17题:

    The DBA has chosen to manage SGA and PGA memory separately in an OLTP database because of his unique knowledge of the application. Which of these are good starting points to use when configuring the maximum values for SGA and PGA,based on the amount of memory available on the system?()

    • A、 20% SGA  80% PGA
    • B、 25% SGA  75% PGA
    • C、 50% SGA  50% PGA
    • D、 75% SGA  25% PGA
    • E、 80% SGA  20% PGA

    正确答案:E

  • 第18题:

    问答题
    说明数据库内存结构中SGA和PGA的组成,以及这两个内存区存放信息的区别。

    正确答案: SGA区由数据缓冲区、共享池、重做日志缓冲区、大型池、JAVA池构成;PGA区由排序区、私有SQL区以及堆栈构成。
    SGA区是由Oracle分配的共享内存结构,包含一个数据库实例共享的数据和控制信息。当多个用户同时连接同一个实例时,SGA区数据供多个用户共享,所以SGA区又称为共享全局区。用户对数据库的各种操作主要在SGA区中进行。该内存区随数据库实例的创建而分配,随实例的终止而释放。PGA区是在用户进程连接数据库,创建一个会话时,由Oracle为用户分配的内存区域,保存当前用户私有的数据和控制信息,因此该区又称为私有全局区。每个服务器进程只能访问自己的PGA区,所有服务器进程PGA区总和即为实例的PGA区的大小。
    解析: 暂无解析

  • 第19题:

    单选题
    In your multitenant container database (CDB) containing pluggable databases (PDB), users complain about performance degradation. How does real-time Automatic database Diagnostic Monitor (ADDM) check performance degradation and provide solutions?()
    A

    It collects data from SGA and compares it with a preserved snapshot.

    B

    It collects data from SGA, analyzes it, and provides a report.

    C

    It collects data from SGA and compares it with the latest snapshot.

    D

    It collects data from both SGA and PGA, analyzes it, and provides a report


    正确答案: C
    解析: 暂无解析

  • 第20题:

    单选题
    Your database is running in the automatic Program Global Area (PGA) memory management and Shared Memory Management mode. You want to increase the memory available for the SQL work areas. What would you do?()
    A

    modify the HASH_AREA_SIZE initialization parameter

    B

    modify the PGA_AGGREGATE_TARGET initialization parameter

    C

    modify the WORK_AREASIZE_POLICY initialization parameter

    D

    increase the value of the SGA_TARGET initialization parameter

    E

    increase the value of the SGA_MAX_SIZE initialization parameter

    F

    increase the value of the SORT_AREA_SIZE initialization parameter


    正确答案: B
    解析: 暂无解析

  • 第21题:

    单选题
    Which statement about Automatic Memory Management with Oracle 11g is true?()
    A

     You cannot specify MEMORY_TARGET if you explicitly specify SGA_TARGET or  PGA_AGGREGATE_ TARGET values that are greater than zero in your parameter file.

    B

     Oracle can reallocate memory between the SGA and PGA automatically as needed.

    C

     To use Automatic Memory Management, you must explicitly set both the MEMORY_TARGET and MEMORY_MAX_TARGET parameters in your parameter file.

    D

     You can set the MEMORY_TARGET parameter to a maximum value of the current SGA size plus the current PGA size.


    正确答案: B
    解析: 暂无解析

  • 第22题:

    单选题
    The DBA has chosen to manage SGA and PGA memory separately in an OLTP database because of his unique knowledge of the application. Which of these are good starting points to use when configuring the maximum values for SGA and PGA,based on the amount of memory available on the system?()
    A

     20% SGA  80% PGA

    B

     25% SGA  75% PGA

    C

     50% SGA  50% PGA

    D

     75% SGA  25% PGA

    E

     80% SGA  20% PGA


    正确答案: A
    解析: 暂无解析

  • 第23题:

    单选题
    For Oracle 11g, Oracle strongly recommends that you configure your database to use which of the following memory-management features?()
    A

     Automatic PGA Memory Management

    B

     Automatic SGA Memory Management

    C

     Automatic Shared Memory Management

    D

     Automatic Memory Management

    E

     Manual SGA Memory Management

    F

     None of the above


    正确答案: F
    解析: 暂无解析