Are you going to use prepared statements or SQLJ?
With prepared statements get some standards in now
regarding bind variables (ok that is for both) and
to ensure they close their statements as soon as they
are done with them (to many open cursors error).
-----Original Message-----
WILLIAMS
Sent: Monday, April 01, 2002 9:20 AM
To: Multiple recipients of list ORACLE-L
Oh, I guess I'm a little slow on Monday. I've enjoyed the discussion so far.
Very close to my situation.
Given my situation - i.e., we haven't had many SQL statement problems, but
expecting to receive more with Java, I'm wondering how I can get ahead of
the game. I have worked on a set of SQL statement recommendations, simple
stuff like make sure screen queries use and index. I am considering creating
a checklist form for SQL statements for the developers to use. Like include
the listing from EXPLAIN PLAN. Does anyone have any thoughts on this
approach? I'm not sure if the developers/management would go for it, but I
thought it would be worth asking as a starting point. Everybody is new to
Java and a little nervous, so they are probably more open to suggestions.
Dennis Williams
DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com
-----Original Message-----
Sent: Monday, April 01, 2002 9:13 AM
To: Multiple recipients of list ORACLE-L
and your question is?
- DENNIS WILLIAMS <DWILLIAMS_at_LIFETOUCH.COM> wrote:
> All,
> We are in transition here at my site. Our primary development tool
> over the past few years has been a client-server tool named Uniface
> from
> Compuware, which does an excellent job of protecting developers from
> themselves. However, we are switching to Java, and moving more
> developers
> from the mainframe to an Oracle-Java system that is being developed.
> For a
> Java IDE, it looks like a tool named TogetherSoft. I am concerned
> that I
> will need to take a more active role with the developers.
> Dennis Williams
> DBA
> Lifetouch, Inc.
> dwilliams_at_lifetouch.com
>
>
> -----Original Message-----
> Sent: Friday, March 29, 2002 8:03 PM
> To: Multiple recipients of list ORACLE-L
>
>
> Greg,
>
> You *do* see DBA's doing the bulk of the SQL tuning work in many
> shops. But
> it's not necessarily because the developers, or at least some them,
> can't,
> or, that many of them don't care (and *many* of them never do give it
> a
> thought). I've seen places where the developers begged for the
> ability to
> turn on tracing in development, or to have a plan_table and/or the
> use of
> autotrace, and were denied. And other cases where the development,
> testing,
> and QA environments were so different from production that there was
> nearly
> no point.
>
> Anyway, just by virtue of their titles, I don't know that a DBA is
> any
> better at SQL tuning than a developer or vice versa (and I'm not
> pointing
> that comment at you, Greg, but just in general that I don't think the
> title
> of DBA or developer makes a difference). It really depends on their
> backgrounds and skill levels. I've seen, for the most obvious
> example, many
> DBA's and developers freak when they see a full table scan, never
> taking
> into consideration if that was the appropriate approach. Instead,
> they just
> lived by some rule that "full table scans are bad". You see lots of
> things
> like that.
>
> Anyway, as someone who started off as both a DBA and developer, and
> drifts
> back and forth between the two and still serving in both roles, I can
> see
> both sides. I know DBA's who rant about the developers not giving a
> flip
> about performance when they write their code, and in many cases it is
> true,
> the issue of performance was never considered. But I also know many
> developers who *do* care and are hindered from doing so. By the same
> token,
> I know a lot of DBA's who are very good at SQL tuning, and tuning and
> general, and many more who aren't.
>
> So, what we can we do? We can work with the developers (and DBA's)
> and
> mentor them. We can teach the tricks and efficient styles (whether
> SQL
> itself or application design in general). And it really helps if we
> can
> provide an environment that mimics production (dollars and budgets
> make that
> hard to do in many cases).
>
> Sorry for the length, but it touches on something I'm dealing with
> right
> now. I'm helping some developers who are getting hammered about why
> their
> code performs so poorly in production. Heck, it ran great in all the
> other
> environments, there's not much more that they could have done. And
> yes, I
> now sit in on the code reviews making suggestions when something
> could be
> done better, and testing their code and every SQL statement against
> production. Often times requires significant work in stubbing out the
> DML
> pieces and duplicating the same logic when doing so. But if they
> aren't
> given a "real" environment, and, they are interested, I have sympathy
> when
> seeing them hammered for poor performing code and SQL statements when
> they
> did everything they could with what they were provided.
>
> Oh well, end of the week rant of sorts. I'm sending everyone a case
> of their
> favorite scotch if they just ask ;-) Just a test to see if anyone
> makes it
> this far ;-)
>
> Regards,
>
> Larry G. Elkins
> elkinsl_at_flash.net
> 214.954.1781
>
> > -----Original Message-----
> > From: root_at_fatcity.com [mailto:root_at_fatcity.com]On Behalf Of Greg
> Moore
> > Sent: Friday, March 29, 2002 4:38 PM
> > To: Multiple recipients of list ORACLE-L
> > Subject: Do programmers tune SQL?
> >
> >
> > What percent of developers know how to explain and trace SQL,
> interpret
> > these reports and tune?
> >
> > In my experience it's about 10%, so most SQL tuning is done by
> DBA's. Is
> > that about right?
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Larry Elkins
> INET: elkinsl_at_flash.net
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California -- Public Internet access / Mailing
> Lists
> --------------------------------------------------------------------
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
> the message BODY, include a line containing: UNSUB ORACLE-L
> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: DENNIS WILLIAMS
> INET: DWILLIAMS_at_LIFETOUCH.COM
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California -- Public Internet access / Mailing
> Lists
> --------------------------------------------------------------------
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
> the message BODY, include a line containing: UNSUB ORACLE-L
> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).
Do You Yahoo!?
Yahoo! Greetings - send holiday greetings for Easter, Passover
http://greetings.yahoo.com/
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Rachel Carmichael
INET: wisernet100_at_yahoo.com
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
San Diego, California -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: DENNIS WILLIAMS
INET: DWILLIAMS_at_LIFETOUCH.COM
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
San Diego, California -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Kimberly Smith
INET: ksmith2_at_myfirstlink.net
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
San Diego, California -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
Received on Mon Apr 01 2002 - 19:53:28 CST
