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Oracle JRockit JVM uses -Xns option to set nursery size when

题目
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Oracle JRockit JVM uses -Xns option to set nursery size when the generational garbage collection mode is used.  Which two JVM properties are affected by changing its size ？（）
A

compaction ratio limit

B

garbage collection frequency

C

garbage collection times

D

fragmentation heap size

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相似问题和答案

第1题：

In which situation is the UNDO_RETENTION parameter be ignored， even if it is set to a value（）

  • A、When the data file of the undo tablespace is autoextensible
  • B、When there are more than one undo tablespaces available in the database
  • C、When the undo tablespace is of a fixed size and retention guarantee is not enabled
  • D、When the undo tablespace is autoextensible and retention guarantee is not enabled

正确答案:C

第2题：

In which situation may the UNDO_RETENTION parameter be ignored， even if it is set to a value（）

  • A、when the data file of the undo tablespace is autoextensible
  • B、when there are more than one undo tablespaces available in the database
  • C、when the undo tablespace is of a fixed size and retention guarantee is not enabled
  • D、when the undo tablespace is autoextensible and retention guarantee is not enabled

正确答案:C

第3题：

You have installed two 64G flash devices to support the Database Smart Flash Cache feature on your database server that is running on Oracle Linux.You have set the DB_SMART_FLASH_FILE parameter:DB_FLASH_CACHE_FILE= ‘/dev/flash_device_1 ‘,’ /dev/flash_device_2’How should the DB_FLASH_CACHE_SIZE be configured to use both devices?（）

A. Set DB_FLASH_CACHE_SIZE=64G

B. Set D3_FLASH_CACHE_SIZE=64G, 64G

C. Set D3_FLASK_CACKE_SI2E=128G

D. db_flash_cache_SI2E is automatically configured by the instance at startup


参考答案：B

第4题：

Which of the following statements is true regarding the initialization parameter DIAGNOSTIC_DEST？（）   The default value is the value of the environment variable $ORACLE_HOME； if $ORACLE_HOME isn’t set  

  • A、 then the default is set to $ORACLE_BASE  The default value is the value of the environment variable $ORACLE_BASE； if $ORACLE_BASE isn’t set，
  • B、 then it is set to $ORACLE_HOME
  • C、 DIAGNOSTIC_DEST is always equal to $ORACLE_HOME
  • D、 DIAGNOSTIC_DEST is always equal to $ORACLE_BASE

正确答案:B

第5题：

Which two Oracle products come pre-packaged with Oracle’s JRockit JDK ？（）

  • A、 Oracle WebLogic Server
  • B、 Oracle Coherence
  • C、 Oracle Database
  • D、 Oracle Real Time Operations Control

正确答案:A,B

第6题：

Which statement is true about XpauseTarget in Oracle JRockit JVM ？ （）

  • A、 This option is supported by all type of Garbage collection modes.
  • B、 This option is only supported by Generational Garbage Collection mode.
  • C、 This option is only supported by Mark and Sweep Garbage Collection mode.
  • D、 This option is only supported by Dynamic Garbage Collection mode.

正确答案:D

第7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 asynchronous
  • B、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

正确答案:C

第8题：

Using Oracle Enterprise Manager to set SGA pool values manually， for which of the following pools does Oracle EM offer advice to set the value appropriately？（） 

  • A、 DB_CACHE_SIZE
  • B、 SHARED_POOL_SIZE
  • C、 LARGE_POOL_SIZE
  • D、 JAVA_POOL_SIZE
  • E、 SGA_MAX_SIZE
  • F、 SORT_AREA_SIZE

正确答案:A,B

第9题：

When creating a SQL tuning set，which of the following steps allows the DBA to reduce the size of the SQL set by selecting specific operators and values？（）

  • A、 Filter versions
  • B、 Filter loads
  • C、 Filter tasks
  • D、 Filter options

正确答案:D

第10题：

What two statements are true about Oracle Enterprise Manager’s Java Diagnostic tool， which makes the tool suitable for production server diagnostics ？（）

  • A、 virtually zero overhead for application running in the JVM 
  • B、 no stalling of running JVM when taking a heap dump for memory analysis 
  • C、 no need of modification， changes， or instrumentation of the application since is uses Network Protocol Analysis （NPA technology）
  • D、 provides Byte Code Instrumentation for Java

正确答案:A,B

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