JDBC Sender Adapter - Transaction & Parameterized Query?

Question

Dear Experts,
I'm curious about the JDBC sender adapter in SAP PI.
As I see from the document and have been searching in the Internet, The default procedure of the sender JDBC adapter is to first run a SELECT/Store Procedure query then update the records that have been read before.
Configuring the Sender JDBC Adapter - Advanced Adapter Engine - SAP Library
What I want to ask is:
- What is the database transaction used for the SELECT and the UPDATE? I mean what if the SELECT is successful and the records have been sent to the IE, but the UPDATE failed. This way, the next polling run, the same records could be read again. Is it possible? Are the SELECT and UPDATE query atomic (if one fails the other fails too)?
- Is it possible to have a parameterized query / stored procedure in sender JDBC adapter? Because seeing at the default procedure, there should be at least a field that will be used as a flag (for example the processed field needs to be updated to '1'). Something like:
          - SELECT * FROM table_a WHERE docno > $last_doc_no
                         $last_doc_no is a paramter or variable from PI
          - EXEC sp_do_something ( $param_a, $param_b )
                         $param_a, $param_b are parameters or variable in PI
Thank you,
Suwandi C.

Answer 1

Hi Suwandi,
all action to database are in one transaction and thats mean if one failed all failed.
And it is possible to have parameterized storied procedure. You sould send something like
<?xml version="1.0" encoding="UTF-8"?>
<ns0:mt_proc xmlns:ns0="http://aaaa">
   <statementname>
      <stProc action="EXECUTE"/>
      <TABLE>PROCEDURE NAME</TABLE>
      <access>
         <param_in isInput="1" type="some_type">input param</param_in>
         <param_out isOutput="1" type="some_type"></param_out>
      </access>
   </statementname>
</ns0:mt_proc>