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JDBC too slow!

Posted on 2001-06-14
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Last Modified: 2006-11-17
I wrote my application that is querying a microsoft access database, I used preparedstatements in most cases, this is an application server it listens for clients connection, if a client connects it start a thread which do the database querying. Now the problem is its getting slower and slower everytime a client (s) connect. is there something i am missing here?
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Question by:TinasheC
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rjackman earned 30 total points
ID: 6194266
hi
i think u should go for the connection pooling
have a connection pool that will store the open connections to the database
whenever any client connects it will pick up the connection from the pool and after using it return that connection to the pool
also while accessing the db make sure that u are not using too many string parameters
i mean is u said u are using PreparedStatement
make sure that u are not creating it in loop as well as while accessing the resultset try to get the column using the column no instead of columnname
cheers
RJ
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by:wgilster
ID: 6195538
I'm sure you've checked this already, but you might want to make sure you aren't creating tons of PreparedStatements.  I've done this and depending on the driver, it can really bring things to a crawl as well as chew resources.

I've accidentally wrote:

pStatementInsert = driver.prepareStatement("SELECT * FROM Dude");

as opposed to:

if (pStatementInsert == null)
     pStatementInsert = driver.prepareStatement("SELECT * FROM Dude");

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Expert Comment

by:bagi112599
ID: 6196664
also,
make sure you always close local
statements, resultsets and connections.
best place to close them is
finally{} block.
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by:Moondancer
ID: 6899672
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