[Zope-DB] RE: Zope-DB Digest, Vol 24, Issue 10

Jet Wilda jet.wilda at kobie.com
Tue Jul 19 12:08:19 EDT 2005


	I'd be interested, we are experimenting with DCOracle2 right now
and having some issues.  We've been looking at
http://www.zope.org/Members/dobe/index_html/cxoracleda and looking at
what it would take to make a Zope 2 version of this adapter.  We
basically just need to be able to talk to oracle and call stored
	So yeah send it this way we are looking at all our options right



> Message: 1
> Date: Tue, 19 Jul 2005 16:30:32 +0200
> From: Maciej Wisniowski <maciej.wisniowski at coig.katowice.pl>
> Subject: Re: [Zope-DB] DCOracle2 and ConnectionReleasedError
> To: Chris Withers <chris at simplistix.co.uk>
> Cc: Zope-DB at zope.org
> Message-ID: <42DD0E88.2040800 at coig.katowice.pl>
> Content-Type: text/plain; charset=ISO-8859-2; format=flowed
>  > Well, you're doing well on the debug front with the print
>  > statements, but make sure you watch those times,
>  > threading means the time something prints isn't 
> necessarilly  > the time something ran ;-) Good to know :)
>  > If it was me, I'd drop down to one thread and see if you
>  > can reproduce. If not, and I suspect that will be the 
> case,  > try 2 threads. Still no errors, try 3 and so on.  > 
> ...then try and figure out what's causing it to fail and see  
> > if you can come up with an artificial test case.
>  > I'm sorry I can't help more :-S I really want to maintain
>  > DCOracle2 but simply have no time. Matt Kromer can
>  > help with C-level bugs, but all the current problems are
>  > with the Python database adapter for Zope.
> Thanks for your reply. Maybe I'll try to look at this if I'll 
> have enough time.
>  > I was hoping that my current big project would need this,
>  > but it turns out it's easier just to wait until the 
> underlying  > database gets moved onto MS SQL Server and then 
>  > just use eGenix's excellent ODBC adapter.  > You may even 
> want to see if you can use that to connect  > to Oracle, they 
> think you can ;-) We're using mxODBC to connect to Sybase and 
> it works perfectly, but the problem was with Oracle and it's 
> stored procedures and input/output variables.
> Now we are trying SQLRelay. I've changed SQLRelayDA to
> return values just like DCOracle and I've created simple 
> product that allows to call stored Oracle 
> procedures/functions from Zope and these SP objects returns 
> values from output variables just like DCOracle2 does, so 
> maybe it will be possible even to simply switch from DCOracle 
> to SQLRelay with one click (one script) :) Simple test says 
> that SQLRelay is faster than DCOracle2 but it may depend from 
> result size.
> This kind of product (SP) may be created for mxODBC
> too but it'll not be possible to simply exchange DCOracle 
> because AFAIR mxODBC supports only cursor binds from Oracle 
> or something like this.
> If somebody is interested in switching from DCOracle2
> to SQLRelay, and in my SQLRelaySP
> (stored procedures product) please tell me. It is very
> first version but any opinions tests etc. should be interesting.
>  > Anyway, good luck, I'm afraid you're going to need it! Thanks :)
> -- 
> Maciej Wisniowski
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> End of Zope-DB Digest, Vol 24, Issue 10
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