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From Patrick T <soberdrun...@hotmail.com>
Subject RE: Slow JPA
Date Fri, 04 Apr 2008 14:44:46 GMT

My issue is even just fetching the entities. Despite of changing
relationships to LAZY fetch, I find that querying the DB takes a really long
time. I have experienced the commit issue as well,but I've worked around
that by being careful on what I cascade through different entities.



Brill Pappin wrote:
> 
> As a rule you can expect *any* orm framework to be slower than simple
> JDBC,
> there is simply more to do... What you gain from it is ease of maintenance
> and implementation which will save you time later (often a lot of time).
> As with anything, you need to weigh the benefits of any solution over
> another but in my experience most applications don't require such high
> throughput that anyone would notice a couple of milliseconds saved here
> and
> there... Of course it'll depend on what your doing :)
> 
> However...
> 
> I've just been doing some work tonight, and am finding that begin() ->
> commit() transactions take longer and longer (in my case I have a very
> large
> update that is broken down into chunks). I haven't traced the problem yet
> and it may be configuration related, however the time grows exponentially.
> Does that sound like the same problem you are having?
> 
> - Brill
> 
> -----Original Message-----
> From: Patrick T [mailto:soberdrunk22@hotmail.com] 
> Sent: Friday, March 28, 2008 3:55 PM
> To: users@openjpa.apache.org
> Subject: Slow JPA
> 
> 
> Hello Everyone,
> 
> I'm just wondering if anyone else is finding JPA slower than simple jdbc
> implementations. I have tried setting up some of the attributes to Lazy
> fetch and I still find it to be extremely slow. This is causing my web
> pages
> to load in the upwards of 10 seconds. I have tried running the PCEnhancer
> and still takes a long time to fetch data. Does anyone have any
> suggestions
> to speed it up? Thanks.
> 
> Patrick
> --
> View this message in context:
> http://www.nabble.com/Slow-JPA-tp16360845p16360845.html
> Sent from the OpenJPA Users mailing list archive at Nabble.com.
> 
> 
> 

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