[freetds] Sybase 4.2 crash
Lowden, James K
LowdenJK at bernstein.com
Thu Jun 17 09:04:08 EDT 2004
> From: freetds-bounces at lists.ibiblio.org
> [mailto:freetds-bounces at lists.ibiblio.org]On Behalf Of
> Thompson, Bill D
> Sent: June 17, 2004 8:25 AM
> I *think* we get stack traces on old versions of Sybase,
> regardless of the
> TDS version....
> I remember our DBA's researching it and telling me that
> Sybase admitted it
> as a bug which was fixed in subsequent sybase versions
Hmmm. Well, I know I run 11.0.3 from time to time on Linux, using FreeTDS, of course. I never crashed it, although I don't remember if I used 4.2 or not (probably I used 5.0).
It's hard to see how we could tickle any bug of theirs if we reproduce their datastream. :-)
> > -----Original Message-----
> > From: James K. Lowden [SMTP:jklowden at schemamania.org]
> > Sent: 17 June 2004 13:00
> > To: TDS Development Group
> > Subject: [freetds] Sybase 4.2 crash
> > > SQL Server/184.108.40.206/P/RS6000/AIX4.1/SWR 8297 ESD 4/OPT/Fri Mar 12
> > > 00:33:51 PST 1999
> > I have just learned about another example of crashing a
> Sybase server with
> > FreeTDS. Like every such case, it used TDS 4.2.
> Unusually, the server
> > was not 12.5 or something; it was 11.0.3, as above.
> > I think we should do one of these things with TDS 4.2:
> > 1. Disable it.
> > 2. Call tds_client_msg() with a warning whenever it's enabled.
> > 3. Fix it.
> > The only reason I can think of to use TDS 4.2 is with
> Microsoft servers
> > prior to SQL Server 7. *Maybe* it works with those
> servers, but that
> > seems unlikely to me, because such servers are so rare nowadays. It
> > hasn't been sold since, what, 1998?
> > Great harm comes from crashing a server: to the poor
> programmer at the
> > hands of his admin and his manager, to the project's
> reputation, and even
> > to free software generally. Never mind, potentially at
> least, to the
> > data.
> > If anyone reading this message would be adversely affected
> if the next
> > release of FreeTDS dropped support for TDS 4.2, please say
> so. If no
> > one's willing to fix it, I think it should go.
> > Thanks.
> > --jkl
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