MI integration with multiple backends

hi guys
i have a scenario wherein i have to fetch data from 2-3 backends at the same time on the Mobile Client.
Can anyone help me out on this as
1)Is it possible
2)if yes then how to implement it
3)the perfomance issues related to this
Thanks in Advance
Replies Awaited
Thanks & Regards
Priya Ghosh

Hi Priya,
By default , we have the provision to set one destination during the creation time of SyncBO.
(If we are specifying one destination here , then the BAPI wrappers must present on that application
server which we used for destination creation through SM59).
If u want to create only one SyncBO for handling ur requirement , then it will become much more complex.
If the data from different R/3 Systems are independent , then for getting data from one system
you can create one syncbo. For this SyncBo u have to create BAPI wrappers in this R/s System and
and u must create a RFC destination to this R/3 system so that u can give it during the SyncBO creation time.
<b>If you want to handle the entire data from different R/3 systems in one SyncBo , this is also possible . You can achieve like this, You have to create BAPI wrappers in the MI server itself.In the MI server u need RFC destinations towards your different R/3 Systems. In the different back end R/3 systems , u have to create RFCs that can be used to fetch the data from the same R/3 system. Then within this BAPI wrappers which are in the MI server , u have to call the RFC enabled function modules using the respective RFC destinations.
This RFC destinations , u have to hard code within the BAPI Wrapper or can kept as table entries itself.</b>
If the data from different back end systems are independent , then it is better to create sync bos for the data from each R/3 system...
If you want to use S01 syncBos , then it will become an overload to the MI server during synchronization.
But with T01 , that can show much more performance than S01..
One more thing , if u have large volume of data which is to be replicated in the
MI server , then u have to take a look at the limitation of ABAP session . ABAP internal session can hold only 2GB.
Regards
Kishor Gopinathan<b></b>

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