Need help on JDBC

Question

Hi All,
I need a solution on one of the requirement. Could you please help me on this.
Requirement:
I have to set up a interface between SQLServer and SAP HR using SAP XI. There is one constraint on database. We should not insert/update the data to the existing database table and can create other database if needed. Interface should run by every hour. one unique field transaction is there in the table.
My doubt is how can we ensure that not to read any duplicate records every time.
These are the possibilities :
  Option 1 :
Create another database and table with additional update flag and transfer the whole data from the original database to this newly created database table using triggers.
          We need to poll the data from the newly database table and update the status every time.
Disadvantage : Maintenance of additional data base is to push the effort and also would introduce complexity.
          Any comments on this solution ??
  Option 2:  Read the whole data from DB and send the data to proxy.
                proxy should do the following.
a)     Insert the whole data in Ztable (we need to create Ztable in SAP HR)
b)     Call the BAPI to update the SAP HR data
c)     Select max(Transaction) from the ZTable.
d)     Need to pass this parameter to the JDBC adapter  (to ensure that not to read duplicate records)
e)     Adapter will read the  data from next transaction ID basing on this parameter in next poll.
   My doubt would be is there any option that we can call Adapter from receiver proxy and pass this dynamic parameter(Transaction) ??
Please review this and provide best possible solution.
I am waiting for your reply.
Regards,
Sekhar D

Answer 1

HI,
can we call the adapter from proxy to pass this dynamic parameter
Yes ofcourse.
U use the IP address of the server along with the communication component and communication channel... and u can
call a adapter passing the parameters.
Please search in SDN for the same.. there are lot of blogs and wiki available.
Babu