ORA-03278: duplicate ALLOCATE EXTENT option specification
Cause: An option (DATAFILE, SIZE or INSTANCE) was specified more than once.
Action: Specify each option at most once.
ORA-03278: duplicate ALLOCATE EXTENT option specification(重复分配扩展选项规范)是Oracle数据库服务器中可能出现的一条错误消息。该错误消息指示在尝试分配新扩展时规范中出现了重复指定。