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slow db performance after blackberry application is restarted
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Sherwin  
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 More options Jun 15 2010, 12:57 am
Newsgroups: sybase.public.sqlanywhere.ultralite
From: Sherwin <rskart...@gmail.com>
Date: Mon, 14 Jun 2010 21:57:56 -0700 (PDT)
Local: Tues, Jun 15 2010 12:57 am
Subject: slow db performance after blackberry application is restarted
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I'm using UltraLiteJ 11.0.1.2436 on
BlackBerry (OS 4.6 thru 5.0) and am experiencing extremely
slow commits after the app is restarted.  The database is in
persistence store memory and created the first time the app
is started and inserts of a simple row (an id and varchar)
are very fast. (0.1s per 100 on device).  After exiting and
restarting the app the database config is identical to how
it was initially created, however the connect is atrociously
slow (15s) and the subsequent inserts take 4s per 100.  Any
insights?

I've tinkered with page size, cache size, index persistence,
lazy load index, shadow paging and write at end but nothing
seems to work.


 
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Sherwin  
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 More options Jun 17 2010, 3:12 pm
Newsgroups: sybase.public.sqlanywhere.ultralite
From: Sherwin <rskart...@gmail.com>
Date: Thu, 17 Jun 2010 12:12:16 -0700 (PDT)
Local: Thurs, Jun 17 2010 3:12 pm
Subject: Re: slow db performance after blackberry application is restarted
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Solved: Use the Connection.disableSynchronization( table-name ) method
for tables that aren't intended to be synchronized to a server.  In my
case it was needed for all the tables.

 
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