A shared SQL area is always in the shared pool. Oracle allocates memory from the shared pool when a SQL statement is parsed; the size of this memory depends on the complexity of the statement. If a SQL statement requires a new shared SQL area and the entire shared pool has already been...
A shared SQL area is always in the shared pool.Oracle allocates memory from the shared pool when a SQL statement is parsed; the size of this memory depends on the complexity of the statement.If a SQL statement requires a new shared SQL area and the entire shared pool has already been al...
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$librarycache视图查询...
存储过程、包、函数等)以及它们转换后能够被Oracle执行的代码等,这部分信息可以通过v$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...
DBMS_SHARED_POOL provides access to the shared pool, which is the shared memory area where cursors and PL/SQL objects are stored. DBMS_SHARED_POOL enables you to display the sizes of objects in the shared pool, and mark them for keeping or unkeeping in order to reduce memory fragmentation...
When you setSHARED_POOL_SIZEin a PDB to a value that does not meet these requirements, you receive an error. See Also: "V$SGASTAT" Oracle Database Administrator’s Guidefor more information about the initialization parameters that control the memory usage of PDBs ...
Oracle Database Performance Tuning Understanding ORA-04031 TheORA-04031: unable to allocate bytes of shared memoryerror occurs because more shared memory was needed than was available. The error message will show how much memory was unavailable, the memory pool encountering the error and details about...
ORACLE® HYPERION ENTERPRISE PERFORMANCE MANAGEMENT SYSTEM HYPERION® SHARED SERVICES RELEASE 11.1.1.X ACTIVE-PASSIVE FAILOVER CLUSTERS (WINDOWS ENVIRONMENTS) CONTENTS IN BRIEF About Shared Services High Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
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