is there any problem about 10I oracle connect to 9I oracle in BW

we want to know about

creating a new source system on BW in AIX pointing to an Oracle

database, bw oracle use 10i database , connect to

9idatabase(Windows) to get data for BW,

can you tell me how 10I oracle connect to 9I oracle ??

is there any problem about 10I oracle connect to 9I oracle ??If

there exit problem ,how to deal with it ??

Thank you

ALLEN ZHOU