Which three statements are true about memory buffer allocation by a MySQL Server?()A、Global buffers such as the InnoDB buffer pool are allocated after the server starts, and are never freedB、Thread buffers are allocated when a client connects, and are freed when the client disconnectsC、Buffers that are needed for certain operation are allocated when the operation starts, and freed when it endsD、User buffers are allocated at server startup and freed when the user is droppedE、All dynamic buffers that are set with a SET GLOBAL statement immediately get allocated globally, and are never freed

Which three statements are true about memory buffer allocation by a MySQL Server?()

  • A、Global buffers such as the InnoDB buffer pool are allocated after the server starts, and are never freed
  • B、Thread buffers are allocated when a client connects, and are freed when the client disconnects
  • C、Buffers that are needed for certain operation are allocated when the operation starts, and freed when it ends
  • D、User buffers are allocated at server startup and freed when the user is dropped
  • E、All dynamic buffers that are set with a SET GLOBAL statement immediately get allocated globally, and are never freed

相关考题:

The BACKUP_TAPE_IO_SLAVES parameter is set to FALSE for the database instance. Which statement is true while performing a tape backup in an RMAN session?() A. The tape I/O performed is asynchronousB. The tape buffer is allocated from the System Global Area (SGA)C. The tape buffer is allocated from the Program Global Area (PGA)D. Oracle I/O uses an interrupt mechanism to determine when each I/O completes

Which three statements are true about memory buffer allocation by a MySQL Server?() A.Global buffers such as the InnoDB buffer pool are allocated after the server starts, and are never freedB.Thread buffers are allocated when a client connects, and are freed when the client disconnectsC.Buffers that are needed for certain operation are allocated when the operation starts, and freed when it endsD.User buffers are allocated at server startup and freed when the user is droppedE.All dynamic buffers that are set with a SET GLOBAL statement immediately get allocated globally, and are never freed

Which two options describe how MySQL Server allocates memory?() A.Thread memory is pre-allocated up to thread_cache_size for performanceB.Each connection may have its own per-thread memory allocationsC.Global memory resources are allocated at server startupD.Each thread allocates memory from a global pool

Which two statements are true about setting the per-thread buffers higher than required?() A.More memory per thread is beneficial in all scenariosB.It causes increased overhead due to initial memory allocationC.It can affect system stability during peak load times, due to swappingD.It requires increasing the thread_cache_size variable

Which two statements are true about bandwidth guarantee?()A、When congestion is present,the priority command doesn’t allow exceeding the allocated rateB、When congestion isn’t present,the priority command doesn’t allow exceeding the allocated rateC、When congestion is present,the priority command allows exceeding the allocated rateD、When congestion isn’t present,the priority command allows exceeding the allocated rate

The BACKUP_TAPE_IO_SLAVES parameter is set to FALSE for the database instance. Which statement is true while performing a tape backup in an RMAN session?()  A、 The tape I/O performed is asynchronousB、 The tape buffer is allocated from the System Global Area (SGA)C、 The tape buffer is allocated from the Program Global Area (PGA)D、 Oracle I/O uses an interrupt mechanism to determine when each I/O completes

You enabled Automatic Shared Memory Management. The initialization parameters are set as shown below:  SGA_TARGET = 10GB SGA_MAX_SIZE = 14GB  STREAMS_POOL_SIZE = 1GB  SHARED_POOL_SIZE = 3GB  Which two statements are correct in this scenario? ()A、 A total of 14 GB memory will be allocated to the automatically tuned memory componentsB、 Reducing the value for SGA_TARGET to 9 GB will automatically decrease the memory allocated to shared pool from 3 GB to 2 GBC、 The value for SGA_TARGET can be increased up to a maximum of 14 GBD、 A maximum of 3 GB can be allocated to shared poolE、 Increasing the value for SGA_TARGET to 12 GB will automatically increase the memory allocated to autotuned parametersF、 Increasing the value for SGA_TARGET will automatically increase the memory allocated for  STREAMS_POOL_SIZE

Automatic Shared Memory Management (ASMM) has been enabled for your database instance.  Theinitialization parameters for the components that are managed by ASMM are not set. After observing theeffects of ASSM, you executed the following command: SQL ALTER SYSTEM SET DB_CACHE_SIZE = 100M;  Which statement is true in this scenario()A、The minimum memory size for the database buffer cache is set to 100 mb.B、The maximum memory size that can be obtained by the database buffer cache during ASMM is set to100 mbC、The minimum memory size allocated for a server process in the database buffer cache in dedicatedmode is set to 100 mb.D、The maximum memory size from the database buffer cache that can be released for dynamicdistribution during ASMM is set to 100 mb

Your database is configured in shared server mode. However, your senior DBA asks you to modify the value ofthe PRIVATE_SGA limit in the profile of the users.  What could be the reason for this()A、To limit the User Global Area (UGA) memory allocated to a session from the SGAB、To limit the amount of memory to be used for the dispatcher queue of a session in SGAC、To limit the amount of memory to be used for the request pool in System Global Area (SGA)D、To control the amount of memory allocated in SGA for the local variables for each shared server process

Identify the memory component from which memory may be allocated for: () 1: Session memory for the shared server  2: Buffers for I/O slaves  3: Oracle Database Recovery Manager (RMAN) backup and restore operations A、Large PoolB、Redo Log BufferC、Database Buffer CacheD、Program Global Area (PGA)

Which two statements are true about setting the per-thread buffers higher than required?()A、More memory per thread is beneficial in all scenariosB、It causes increased overhead due to initial memory allocationC、It can affect system stability during peak load times, due to swappingD、It requires increasing the thread_cache_size variable

Flushing dirty buffers out of the buffer cache is influenced to the greatest extent by which of the following process?()A、ARCH B、SMON C、LGWRD、SERVER

The BACKUP_TAPE_IO_SLAVES parameter is set to FALSE for the database instance. Which statement istrue while performing a tape backup in an RMAN session?()A、The tape I/O performed is asynchronousB、The tape buffer is allocated from the System Global Area (SGA)C、The tape buffer is allocated from the Program Global Area (PGA)D、Oracle I/O uses an interrupt mechanism to determine when each I/O completes

Identify the memory component from which memory may be allocated for:() 1. Session memory for the shared server 2. Buffers for I/O slaves 3. Oracle Database Recovery Manager (RMAN) backup and restore operationsA、Large PoolB、Redo Log BufferC、Database Buffer CacheD、Program Global Area (PGA)

Your database is using shared server configuration. Which optional memory structure would you configure to store the User Global Area (UGA) information and improve the shared pool performance?()A、large poolB、streams poolC、keep buffer cacheD、recycle buffer cache

Which two options describe how MySQL Server allocates memory?()A、Thread memory is pre-allocated up to thread_cache_size for performanceB、Each connection may have its own per-thread memory allocationsC、Global memory resources are allocated at server startupD、Each thread allocates memory from a global pool

Which two statements are true about Shared SQL Area and Private SQL Area()A、Shared SQL Area will be allocated in the shared pool.B、Shared SQL Area will be allocated when a session starts.C、Shared SQL Area will be allocated in the large pool always.D、Private SQL Area will be allocated in the Program Global Area (PGA) always.E、Shared SQL Area and Private SQL Area will be allocated in the PGA or large pool.F、The number of Private SQL Area allocations is dependent on the OPEN_CURSORS parameter.

Which two statements are true about Shared SQL Area and Private SQL Areas()A、Shared SQL Area will be allocated in the shared pool.B、Shared SQL Area will be allocated when a session starts.C、Shared SQL Area will be allocated in the large pool always.D、The whole of Private SQL Area will be allocated in the Program Global Area (PGA) always.E、Shared SQL Area and Private SQL Area will be allocated in the PGA or large pool.F、The number of Private SQL Area allocations is dependent on the OPEN_CURSORS parameter.

Examine the details of the Top 5 Timed Events in the following Automatic Workloads Repository (AWR)report:What are three possible causes for the latch-related wait events?()A、The size of the shared pool is too small.B、Cursors are not being shared.C、A large number COMMITS are being performed.D、There are frequent logons and logoffs.E、The buffers are being read into the buffer cache, but some other session is changing the buffers.

单选题Your database is configured in shared server mode. However, your senior DBA asks you to modifythe value of the PRIVATE_SGA limit in the profile of the users.  What could be the reason for this()Ato limit the User Global Area (UGA) memory allocated to a session from the SGABto limit the amount of memory to be used for the dispatcher queue of a session in SGACto limit the amount of memory to be used for the request pool in System Global Area (SGA)Dto control the amount of memory allocated in SGA for the local variables for each shared server process

单选题Identify the memory component from which memory may be allocated for: () 1: Session memory for the shared server  2: Buffers for I/O slaves  3: Oracle Database Recovery Manager (RMAN) backup and restore operationsALarge PoolBRedo Log BufferCDatabase Buffer CacheDProgram Global Area (PGA)

单选题The BACKUP_TAPE_IO_SLAVES parameter is set to FALSE for the database instance. Which statement istrue while performing a tape backup in an RMAN session?()AThe tape I/O performed is asynchronousBThe tape buffer is allocated from the System Global Area (SGA)CThe tape buffer is allocated from the Program Global Area (PGA)DOracle I/O uses an interrupt mechanism to determine when each I/O completes

单选题Identify the memory component from which memory may be allocated for:() 1. Session memory for the shared server 2. Buffers for I/O slaves 3. Oracle Database Recovery Manager (RMAN) backup and restore operationsALarge PoolBRedo Log BufferCDatabase Buffer CacheDProgram Global Area (PGA)

多选题Which two statements are true about setting the per-thread buffers higher than required?()AMore memory per thread is beneficial in all scenariosBIt causes increased overhead due to initial memory allocationCIt can affect system stability during peak load times, due to swappingDIt requires increasing the thread_cache_size variable

多选题Which three statements are true about memory buffer allocation by a MySQL Server?()AGlobal buffers such as the InnoDB buffer pool are allocated after the server starts, and are never freedBThread buffers are allocated when a client connects, and are freed when the client disconnectsCBuffers that are needed for certain operation are allocated when the operation starts, and freed when it endsDUser buffers are allocated at server startup and freed when the user is droppedEAll dynamic buffers that are set with a SET GLOBAL statement immediately get allocated globally, and are never freed

单选题Flushing dirty buffers out of the buffer cache is influenced to the greatest extent by which of the following process?()AARCH BSMON CLGWRDSERVER

多选题Which two options describe how MySQL Server allocates memory?()AThread memory is pre-allocated up to thread_cache_size for performanceBEach connection may have its own per-thread memory allocationsCGlobal memory resources are allocated at server startupDEach thread allocates memory from a global pool