AW: Mass start of workflows in idoc inbound processing

[Becker Stephan (extern)]

Hi Uli,
 
I have had several project face similar problems; the only recourse we =
have
had in deadlock and other situations that are one way or the other =
caused by
excessive load, was to either inflate the application server enough to =
cope
with peak load, or to route all workflows (via the RFC destination) to =
a
dedicated app server that is optimised for workflow (number and class =
of
tasks, etc.). The latter alternative has the big advantage that peak =
loads
will be transparent to the end user.. as per the cost, when you think =
about
the alternative (maybe hundreds or thousands of users not working /
reworking due to a system restart, or simply working slower because the
system is a dog), then the overall cost will probably only be a =
fraction
with the technical solution.
 
Hth,
Stephan
 
-----Urspr=FCngliche Nachricht-----
Von: Ulrich Mende [mailto:wug at mende-edv-beratung.de]
Gesendet: Dienstag, 25. Juni 2002 17:49
An: SAP-WUG at MITVMA.MIT.EDU
Betreff: Mass start of workflows in idoc inbound processing
 
 
Hello workflowers,
we have a problem with mass processing of inbound idocs here (4.6C).
In the processing of the incoming idocs we start a workflow directly
with SWW_WI_START. The workflow consists of background steps only, =
which
all call methods doing something like  CALL TANSACTION VNNNN USING
BDCTAB MODE 'N'. (Yes, I know, this is not realy workflow and could be
done by
an ABAP program too, but they like workflows here  :-)  )
Everything works fine when idocs arrive with "normal" frequency less  1
idoc/second. But sometimes after a delaytion in the outbound system the
idocs arrive with much higher frequency. In this case we get a system
deadlock and the system must be shut down. Idoc processing is set to
"direct".
 
Did anyone of you experianced correponding problems with mass start of
workflows?
Could it be usefull to
- serialize the idoc processing?
- switch the background tasks in the workflow to dialog tasks?
 
Any help is higly appriciated
 
Best regards Uli