Shared Pool主要由两部分组成,一部分是库缓存(Library Cahce),另一部分是数据字典缓存(Data Dictionary Cache)。Library Cache主要用于存储SQL语句、SQL语句相关的解析树、执行计划、PL/SQL程序块(包括匿名程序块、存储过程、包、函数等)以及它们转换后能够被Oracle执行的代码等,这部分信息可以通过v$librarycache视图查询...
Oracle architectureDescribe Oracle architecture in brief, What is the function of SMON?, Explain different types of segment, Explain SGA memory structures... Oracle auditingSession auditing, Statement auditing, Privilege auditing, Object auditing...Oracle backupDescribe the Oracle backup...
存储过程、包、函数等)以及它们转换后能够被Oracle执行的代码等,这部分信息可以通过v$librarycache视图查询;至于DataDictionary Cache主要用于存放数据字典信息,包括表、视图等对象的结构信息,用户以及对象权限信息,这部分信息相对稳定,在Shared Pool中通过字典缓存单独存放,字典缓存的内容是按行(Row)存储的(其他数据...
-FALSE (default):A cursor can be deallocated from the library cache regardless of whether application cursors associated with its SQL statement are open. In this case, Oracle must verify that the cursor containing the SQL statement is in the library cache. –TRUE :A cursor can be deallocated ...
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Sharedserver architecture requires Oracle Net Services. User processes targeting theshared server must connect through Oracle Net Services, even if they are on thesame machine as the Oracle Database instance. 二. 说明 2.1 Dedicated server 说明 ...
Sharedserver architecture requires Oracle Net Services. User processes targeting theshared server must connect through Oracle Net Services, even if they are on thesame machine as the Oracle Database instance. 二. 说明 2.1 Dedicated server 说明 ...
Home Interview Questions Oracle System Architecture What is Shared Pool ?Shared Pool is a portion of the SGA that contains shared memory constructs such as shared SQL areas. Interview Candidate Sep 6th, 2004 2 8675 System Architecture Answer First Prev Next Last ...
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除了必须的shared pool latch等竞争外,还不可避免的会导致shared pool中产生更多的内存碎片 (当然,在内存回收时,你可能看到chunk数量减少的情况) 我们看以下测试: 首先重新启动数据库:SQL> startup force; ORACLE instance started. Total System Global Area 47256168 bytes ...