The BasicDataSource class creates a pool for you based on the properties you set (setMaxActive, ...)
http://jakarta.apache.org/commons/dbcp/xref/org/apache/commons/dbcp/BasicDataSource.html#797


To shutdown this pool call ds.close().

"lost" connections are called "abandoned" connections in DBCP config.
Removal of "dead" connections is done by using a validationQuery and related config parameters.


See http://jakarta.apache.org/commons/dbcp/configuration.html for more details.

You have the minimum configuration there. If you are going to use this in a application then take a look at:
BasicDataSourceFactory.createDataSource(Properties properties)


Load all properties from a file into the properties object (properties.load()) and create the DataSource using the factory.
http://jakarta.apache.org/commons/dbcp/apidocs/org/apache/commons/dbcp/BasicDataSourceFactory.html
Same behaviour as setting the properties yourself.


-- Dirk

Scott Purcell wrote:
Hello,

I finally figured out last night how to obtain a DataSource object in a class, 
and set enough properties to get a connection:

BasicDataSource ds = new BasicDataSource();
ds.setDriverClassName("com.mysql.jdbc.Driver");
ds.setUsername("javauser");
ds.setPassword("javadude");
ds.setUrl(connectURI);

then I get a Connection like so:
Connection conn = ds.getConnection()


I am good with all of this, and it works. Now where I am baffled is, where is the pool of connections. Did this create a pool? I know I had to set the commons-pool.jar in my path to get it to run. So does this class create a pool in the background? And if so, do I need to run a thread to shut them down? I am looking at the BasicDataSource javadocs and I see some methods like such:

setInitializeSize(int size)
setDefaultAutoCommit(boolean val)
etc.

But I am not sure which ones are for cleaning up "lost" or "dead" connections, 
etc. And would this simple configuration work for a simple web application?

Any input would be appreciated.

Thanks,

Scott K Purcell

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