Re: [Quickfixj-users] Managing SeqNo manually

[John P. <joh...@ho...>]

Hi Jim,

I am not sure I understand what particular problem you are trying to deal
with.  If you used QFJ JMX agents before, esp. the quickfix/j mbean, you
should know that QFJ does provide a nice way of managing session sequence
online, and remotely if you will.

As for the scenario that Jan desribed, it can be easily addressed by
bundling a command to remove (or relocate if you want to keep) the
file-store in the "start of day" start up script.  This way, the seq no.s
are always reset at the start of each day.  For intra-day re-start however,
you don't want to reset the seq no of course.

Personally, I think QFJ did a pretty good job in this area.

John




jim_b_o wrote:
> 
> 
> John Peng wrote:
>> 
>> - While your session is alive, you can use JMX via JConsole to manage the
>> seq no.
>> - When the engine is off, you can clean up the filestore to reset the seq
>> no for next session.
>> 
> 
> I think we need a mechanism that allows us to reset the seq no (and any
> relevant stores) that is consistent with the FIX Protocol recommendations,
> i.e. by sending a Logon with ResetSeqNumFlag=Y after a TestRequest and
> Heartbeat response including any required resends, within an already
> established connection.  Only this way can we ensure recovery of a failed
> session prior to resetting the seq no.
> 
> As Jan Pevzner suggests, this would be a dynamic mechanism, invoked when
> desired (probably at a particular time of day).  The various ResetOnXXX
> settings do not allow for proper session recovery.
> 

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