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IDS Forum

Re: ER question

Posted By: FRANK
Date: Thursday, 13 December 2007, at 10:10 a.m.

In Response To: Re: ER question (Wee Tung)

Wee,

We will try to reproduce it.

As for LOG defects to IBM, the experience is not great, the problem will
be ignored if they ( or some one) can not reproduce it.

Thanks,
Frank

On Dec 12, 2007 6:49 PM, Wee Tung <wtung@us.ibm.com> wrote:

> What about writing a script to sync all machines to once central machin=
> e
> every hour?
>
> I have not seen the crash if use "always apply" option you mentioned ei=
> ther
> in 10x or 11x. Did you log the defect with IBM?
> ______
> Software Engineer
> IBM Information Management
> Informix ER IDSQA
> wtung@us.ibm.com
> 913-599-7234
> __________________________________
>
> =
>
> "FRANK" =
>
> <yunyaoqu@gmail.c =
>
> om> =
> To
>
> Sent by: ids@iiug.org =
>
> ids-bounces@iiug. =
> cc
>
> org =
>
> Subj=
> ect
>
> Re: ER question [10738] =
>
> 12/12/2007 04:53 =
>
> PM =
>
> =
>
> =
>
> Please respond to =
>
> ids@iiug.org =
>
> =
>
> =
>
> Wee,
>
> Convert a update to a insert is probably a good solution for us at this=
>
> situation( I will be glad if there are more..)
>
> We never use time-stamp since our sites can never be globally
> synchronized! Their clocks simply points to different values even if
> they just resynchronized them hours ago!
>
> As I recalled "always"( not "ignore"..) option crashes my engine on ISD=
> 10
> UC5 AIX5.3 , it gets improved on IDS11?
>
> Thanks,
> Frank
>
> On Dec 12, 2007 5:29 PM, Wee Tung <wtung@us.ibm.com> wrote:
>
> > Yes. I do understand your problem now. But, there is nothing ER can d=
> o =3D
> > when
> > slow network come in place.
> > I don't think there is a retry logic in place when transaction got ab=
> or=3D
> > ted
> > unless the table is locked(by another transaction) and CDR_DSLOCKWAIT=
> i=3D
> > s
> > set.
> > I'm not sure what is your priority in each ER site setup, but what yo=
> u =3D
> > can
> > do for problem like this is to setup ER with timestamp conflict resol=
> ut=3D
> > ion.
> > Even with slow network, site C update row will get insert into site B=
> a=3D
> > nd
> > when site A insert row arrived at site B, it will get rejected becaus=
> e =3D
> > of
> > the timestamp.
> >
> > Hope this help.
> > ______
> > Software Engineer
> > IBM Information Management
> > Informix ER IDSQA
> > wtung@us.ibm.com
> > 913-599-7234
> > __________________________________
> >
> > =3D
> >
> > "FRANK" =3D
> >
> > <yunyaoqu@gmail.c =3D
> >
> > om> =3D
> > To
> >
> > Sent by: ids@iiug.org =3D
> >
> > ids-bounces@iiug. =3D
> > cc
> >
> > org =3D
> >
> > Subj=3D
> > ect
> >
> > Re: ER question [10733] =3D
> >
> > 12/12/2007 03:33 =3D
> >
> > PM =3D
> >
> > =3D
> >
> > =3D
> >
> > Please respond to =3D
> >
> > ids@iiug.org =3D
> >
> > =3D
> >
> > =3D
> >
> > Wee,
> >
> > You are the first one replied. Madison must be on vacation. :-(
> >
> > When the row to be updated does not exist, The whole transaction will=
> b=3D
> > e
> > aborted ( the update is only part of it ). Aborting whole transaction=
>
> > is fine with us because we do not want partial result in database.
> >
> > If ER gives the failing transaction another opportunity to try ( seco=
> nd=3D
> > s
> > later), it will be done! Because the row is on the way from site A to=
> s=3D
> > ite
> > B ( slower network from A to B, but from A to C to B is fast!).
> >
> > Hope I explained the problem.
> >
> > Thanks,
> > Frank
> >
> > On Dec 12, 2007 3:49 PM, Wee Tung <wtung@us.ibm.com> wrote:
> >
> > > Not sure if someone has replied to your question.
> > > You probably has defined conflict rule=3D3D3Dignore in your replica=
> tion=3D
> > .. In=3D3D
> > > an
> > > update anywhere replication, the update row will be discarded if th=
> e =3D
> > ro=3D3D
> > > w
> > > does not exist on target (site B). That is for ignore conflict rule=
>
> > > resolution. You can manually insert the row in site B. It will be d=
> is=3D
> > ca=3D3D
> > > rded
> > > by site A and site C as ignore conflict rule kick in.
> > >
> > > Please find below for the appropriate conflict rule you want for yo=
> ur=3D
> >
> > > replication.
> > >
> http://publib.boulder.ibm.com/infocenter/idshelp/v10/index.jsp?topic=3D=
> 3D=3D
> > 3D=3D3D
> > > /com.ibm.erep.doc/erep75.htm
> > > ______
> > > Software Engineer
> > > IBM Information Management
> > > Informix ER IDSQA
> > > wtung@us.ibm.com
> > > 913-599-7234
> > > __________________________________
> > >
> > > =3D3D
> > >
> > > "FRANK" =3D3D
> > >
> > > <yunyaoqu@gmail.c =3D3D
> > >
> > > om> =3D3D
> > > To
> > >
> > > Sent by: ids@iiug.org =3D3D
> > >
> > > ids-bounces@iiug. =3D3D
> > > cc
> > >
> > > org =3D3D
> > >
> > > Subj=3D3D
> > > ect
> > >
> > > ER question [10706] =3D3D
> > >
> > > 12/11/2007 02:48 =3D3D
> > >
> > > PM =3D3D
> > >
> > > =3D3D
> > >
> > > =3D3D
> > >
> > > Please respond to =3D3D
> > >
> > > ids@iiug.org =3D3D
> > >
> > > =3D3D
> > >
> > > =3D3D
> > >
> > > HI, Folks,
> > >
> > > A question about ER update anywhere implementation.
> > >
> > > If a row update ( from site C) can not be completed on site B ( bec=
> au=3D
> > se=3D3D
> > >
> > > the corresponding row does not exist at that time, it was originate=
> d =3D
> > at=3D3D
> > >
> > > site A and has not arrived at B yet), can we allow the update at B =
> to=3D
> >
> > > have another try (e.g., in 5-10 seconds later) instead of just simp=
> ly=3D
> >
> > > abort it?
> > >
> > > IDS10 UC5, AIX 5.3
> > >
> > > Thanks,
> > > Frank
> > >
> > > *******************************************************************=
> **=3D
> > **=3D3D
> > > ********
> > >
> > > Forum Note: Use "Reply" to post a response in the discussion forum.=
>
> > >
> > > =3D3D
> > >
> > >
> > >
> > >
> > *********************************************************************=
> **=3D
> > ********
> >
> > > Forum Note: Use "Reply" to post a response in the discussion forum.=
>
> > >
> > >
> >
> > *********************************************************************=
> **=3D
> > ********
> >
> > Forum Note: Use "Reply" to post a response in the discussion forum.
> >
> > =3D
> >
> >
> >
> >
> ***********************************************************************=
> ********
>
> > Forum Note: Use "Reply" to post a response in the discussion forum.
> >
> >
>
> ***********************************************************************=
> ********
>
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
> =
>
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

Messages In This Thread

  • ER question
    FRANK -- Tuesday, 11 December 2007, at 3:48 p.m.
    • Re: ER question
      Wee Tung -- Wednesday, 12 December 2007, at 3:49 p.m.
      • Re: ER question
        FRANK -- Wednesday, 12 December 2007, at 4:33 p.m.
        • Re: ER question
          Wee Tung -- Wednesday, 12 December 2007, at 5:29 p.m.
          • Re: ER question
            FRANK -- Wednesday, 12 December 2007, at 5:53 p.m.
            • Re: ER question
              Wee Tung -- Wednesday, 12 December 2007, at 6:49 p.m.
              • Re: ER question
                FRANK -- Thursday, 13 December 2007, at 10:10 a.m.
      • Re: ER question
        Laurie Gustin -- Wednesday, 12 December 2007, at 4:57 p.m.
      • Re: ER question
        Wee Tung -- Wednesday, 12 December 2007, at 5:41 p.m.
        • Re: ER question
          Laurie Gustin -- Wednesday, 12 December 2007, at 5:48 p.m.

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