Re: [SPAM] - Re: [SPAM] - Re: JDBC HighLoad - Found word(s)

Ok so how can i make a preparedStatement pool or
allocated my preparedStatements for each connection ???

Kris Jurka wrote:

>On Fri, 28 Jan 2005, [ISO-8859-1] Stéphane RIFF wrote:
>
>
>
>>Yes i use it as a singleon what's the problem with that ???
>>I instanciate One object => 1 pool for all threads and each thread use
>>the saveTrame
>>
>>
>
>The problem is you have all your preprared statements allocated in the
>singleton instead of per connection.  This is bad because you
>overwrite them upon each call to prepareQuery.  When you have multiple
>threads doing this at once what will happen is the first thread will
>prepare them and start executing, the second thread will also prepare them
>and begin executing, but since the statements are global, you've replaced
>the first threads versions and it will now be executing on the second
>threads connection because it's using the global statements.  You've got
>chaos going on here.
>
>Kris Jurka
>
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