默认情况下,当段创建的时候数据库会为其分配一个初始化区(initial extent ),区始终 存在于一个数据文件中,此时尽管还没有数据写入到该段中,初始化区中的数据依然被保留为段所专用。
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如果您至少将一个连接配置为IPC共享内存连接,那么在初始化ids时将分配处理器间的通信或消息区。
Inter processor communications or messages portion is allocated during IDS initialization if you configure at least one of your connections as an IPC shared-memory connection.
在初始化ids时,它就创建了共享内存,其中包括以下4个区(portion)。
When IDS is initialized, it creates Shared memory which includes the following four portions.
VM初始化过程用一小组跟踪点启动跟踪,这些跟踪点被捕捉到回绕式存储内缓冲区中。
VM initialization starts trace with a small set of trace points that are captured to wrap around in-storage buffers.
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