In a partitioned environment each mirror partition must be initialized before using the database.
在分区环境中，在使用数据库之前，必须初始化每个镜像分区。
This special register is initialized with the value of the DFT_MTTB_TYPES database configuration parameter.
这个特殊注册表是用DFT_MTTB_TYPES数据库配置参数的值初始化的。
Database Level: These are processes that are initialized when a connection is made to a database.
数据库级：这些进程是在建立到数据库的连接时初始化的。
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