The database server manages the allocation and de-allocation of memory in this portion.
数据库服务器在虚拟区中管理内存的分配和解除分配。
There are some callbacks for variable system events such as memory warnings and the de-allocation.
代码中有一些对可变的系统事件（比如说内存警告和存储单元分配）的回调。
SDO handles all its memory allocation and de-allocation internally, and does not require user code to be involved.
SDO 采用内部方式处理其所有内存分配和释放工作，并不要求使用用户代码。
This is how all space reclamation happens in G1, instead of the combination of copying and in-place de-allocation that CMS does.
这就是G 1中空间回收的方式，而不是CMS中所采取的那种方式(拷贝与适当的重分配的组合方式)。
This is how all space reclamation happens in G1, instead of the combination of copying and in-place de-allocation that CMS does.
这就是G 1中空间回收的方式，而不是CMS中所采取的那种方式(拷贝与适当的重分配的组合方式)。
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