Performance issue with custom IDOC download into SAP MII

Question

Hi,
We have a custom IDOC which has ten fields. We take the data from these ten fields and insert into database. The issue is
we have some where around 4500 idocs flowing into SAP MII and then from SAP MII to sql database. The time taken for these idocs is around 30 mins.
Is there a way where we can improve the performance in terms of time taken?
Additional information is
MaxReaderThreadCount has been set to 5 in Configuration Management -> Infrastructure -> Application Resources
sample idoc structure
<IDOCNAME>
  <FIELD1>val1</FIELD1>
<FIELD10>val2</FIELD10>
</IDOCNAME>
Please let us know if more information is needed.
Regards,
Manish Jain

Answer 1

Hi Manish,
My thinking about the queuing is that for each transaction, you are calling your database and passing in the IDoc content.  Depending upon your system, database, transactions, etc., you may be having to establish a connection between MII and the database each time you process an IDoc.  Each "handshake" takes a finite amount of time.  So queuing up the IDocs, establishing a single DB connection and processing large numbers of IDocs in a batch might reduce your processing time substantially.  Something worth investigating.
I don't think that adding additional IDoc Listeners for different IDoc types will work if the source ECC system is the same for each type.  It will simply use the first one it finds and process all the types there.
Additional threads may improve performance and is certainly a low risk, easily implemented test.  Just do it in small increments as you can add too many threads (check with the NW administrator) and lock up your NW system.
And you may want to check with your DBA to see if there are limits on the connections which MII can establish for uploading the IDoc content (or for that matter, any other improvements to be made on the DB side).
Regards,
Mike
Edited by: Michael Appleby on Feb 10, 2012 2:37 PM