Re: Adding NVARCHAR columns causes ct_cancel (ctlib) to hang

./configure: Command not found.   When I do a diff between freetds v0.91
and freetds master version, the configure file is not there in the master.
 unmae -a says the OS version is: Linux nysv-vmpvdev6b.tpnyc.local
2.6.32-431.20.3.el6.x86_64 #1 SMP Fri Jun 6 18:30:54 EDT 2014 x86_64 x86_64
x86_64 GNU/Linux


On Mon, Jan 19, 2015 at 1:40 PM, Igor Korot <[email protected]> wrote:

> Hi,
>
> On Mon, Jan 19, 2015 at 1:57 PM, Gregory Holtorf
> <[email protected]> wrote:
> > I download the master version at
> >
> https://gitorious.org/freetds/freetds/source/a8bafc940508adcb575d1d72b4ff456c9973f5e4
> :
> > but that version apparently can't ./configure and make on unix (even
> > though) some of the readme still says to do that.  Is there a version
> that
> > still works on unix?
>
> Which OS you are working with?
> What is an error message you received? Is it from configure or make?
> How did you configure the library?
>
> Thank you.
>
> >
> > On Sun, Jan 18, 2015 at 3:23 AM, Frediano Ziglio <[email protected]>
> wrote:
> >
> >> 2015-01-16 22:17 GMT+00:00 Gregory Holtorf <[email protected]>:
> >> > When calling ct_cancel in the freetds library, on unix, ct_cancel()
> >> > sometimes takes several minutes to run. This is bad because it usually
> >> > takes a few milliseconds to run. This bug works on freetds-0.91 and
> >> > freetds-0.64 In order to reproduce the bug, I needed to:
> >> >
> >> > 1. Run a select statement on a large table
> >> >
> >> > 2. The table has to contain nvarchar columns. varchar columns do not
> >> > trigger the bug.
> >> >
> >> > 3. The select statement must contain an order by clause
> >> >
> >> >
> >> >   select <nvarchar columns>
> >> >
> >> >   from <table name>
> >> >
> >> >   order by <nvarchar column>
> >> >
> >> >
> >> > After completing the select statement, call ct_cancel(). For instance,
> >> > before you make another select statement or when you log out.
> >> >
> >> >   ct_cancel(m_pCtConnection, NULL, CS_CANCEL_ALL);
> >> >
> >> >
> >> > When I turn on logging I can see that after I call ct_cancel() for the
> >> last
> >> > time, it is followed by an absolutely huge number of packets
> received.  I
> >> > attached a log file, but I had to force quit the program or else the
> log
> >> > file ends up being several thousand megabytes long.
> >> >
> >> > Is there a way to fix this issue? Is freetds unable to make select
> >> > statements on nvarchar columns or is it something I did in my code?
> >> >
> >> >
> >> > Thanks,
> >> >
> >> > Greg
> >> >
> >>
> >> Hi,
> >>   unfortunately is a server problem. Looking at the log FreeTDS
> >> correctly send the cancel request but server does not process it in a
> >> time fashion so at the end it output all results to client. The only
> >> problem can raise from FreeTDS is the conversion from nvarchar(max) ->
> >> ntext caused by protocol. You should try with git master version and
> >> 7.2 protocol.
> >>
> >> Frediano
> >> _______________________________________________
> >> FreeTDS mailing list
> >> [email protected]
> >> http://lists.ibiblio.org/mailman/listinfo/freetds
> >>
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