RE: [Quickfix-developers] Order Types/ FIX Codes

[Jo J. <jo...@tr...>]

The system I use is a combination of date and sequence number generated
by my database. i.e. 20051004-0000001

I feel like this is a pretty good guarantee of uniqueness, and I can
reset the sequence in the DB each night. The only trick is to make sure
the id isn't too long for your broker/exchange's system to handle.

Jo Janssens
Telluride Asset Management
952.653.6456


-----Original Message-----
From: qui...@li...
[mailto:qui...@li...] On Behalf Of
Oren Miller
Sent: Wednesday, October 05, 2005 09:37
To: Caleb Epstein
Cc: Shankar Krishnan; qui...@li...
Subject: Re: [Quickfix-developers] Order Types/ FIX Codes

QuickFIX Documentation:
http://www.quickfixengine.org/quickfix/doc/html/index.html
QuickFIX Support: http://www.quickfixengine.org/services.html

A convenient solution for most systems, if you don't want to put a  
lot of effort into it, is to use the value of the MsgSeqNum.  If you  
are worried about sequence resets, pair it with a time value.

--oren

On Oct 5, 2005, at 9:25 AM, Caleb Epstein wrote:

> On 10/5/05, Shankar Krishnan <skr...@jw...> wrote:
> What is the normal method used to generate ClOrdID, is using the  
> random number gen valid or should I use something
> More robust.
>
> Most exchanges and sell-side systems expect every ClOrdID to be  
> unique for a given session and will reject or ignore duplicates.   
> Using a random number generator isn't a very good idea unless you  
> can be sure it doesn't repeat.  Most systems use either a simple  
> increasing sequence number or something like the NYSE DOT system's  
> branch code + sequence number convention (AAA 0001, AAA 0002, ...  
> ZZZ 9999).
>
> -- 
> Caleb Epstein
> caleb dot epstein at gmail dot com



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