堆管理器会查看可用内存的情况(使用特定算法)并返回一块内存。
The heap manager looks at the available memory (using a particular algorithm) and returns the block.
内存管理器以块的形式将内存分配给线程，以最小化堆锁定争用。
The memory manager allocates memory to threads in chunks to minimize contention on the heap lock.
每个排序都有单独的由数据库管理器按需分配的排序堆。
Each sort has a separate sort heap that is allocated as needed, by the database manager.
理想情况下，应当将排序堆阈值(SHEAPTHRES)参数合理地设置为在数据库管理器实例中设置的SORTHEAP参数最大值的倍数。
Ideally, you should set the sort heap threshold (SHEAPTHRES) parameter to a reasonable multiple of the largest SORTHEAP parameter you have in your database manager instance.
应用程序堆大小参数定义了数据库管理器的一个特定代理或子代理所能使用的私有内存页数。
The application heap size parameter defines the number of private memory pages available to be used by the database manager on behalf of a specific agent or subagent.
当代理程序或子代理程序需要更多的堆空间以处理较大的sql语句时，数据库管理器将按照需要分配内存，所分配的内存大小最大可达到该参数所指定的最大值。
As the agent or subagent requires more heap space to process larger SQL statements, the database manager will allocate memory as needed, up to the maximum specified by this parameter.
举例来说，如果管理器显示堆占用了很大的空间，则您可以启动工件分析器来执行堆占用空间分析。
For example, if the explorer shows a large heap occupancy, you'd launch an artifact analyser that starts a heap-occupancy analysis.
内存管理器依赖作为相邻内存slab的堆，因此当堆需要扩展时无法分配更多本机内存；所有堆内存必须预先保留。
The memory manager relies on the heap being a contiguous slab of memory, so it's impossible to allocate more native memory when the heap needs to expand; all heap memory must be reserved up front.
内存管理器依赖作为相邻内存slab的堆，因此当堆需要扩展时无法分配更多本机内存；所有堆内存必须预先保留。
The memory manager relies on the heap being a contiguous slab of memory, so it's impossible to allocate more native memory when the heap needs to expand; all heap memory must be reserved up front.
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