只恢复一个db file不行。因为db file会有一些信息记录在控制文件里。 如果只恢复单个db file,会导致信息不一致。
可以将SYSAUX offline以后,在exp 数据。
During normal database operation, the database does not allow the SYSAUX tablespace to be dropped or renamed. If the SYSAUX tablespace becomes unavailable, then core database functionality remains operational. The database features that use the SYSAUX tablespace could fail, or function with limited capability.