Username and password are properties given to the driver and have to be configured on a DataSource level. The oracle error is a strange one but is probably correct (no username/password given)
Using the second method is your best bet on the short term.
I can't really say anything about the speed of the PerUserPoolDataSource. I did write some performance tests on BasicDataSource but not on PerUserPoolDataSource.
If you wtrite some performance tests then I will take a look at them.
Regards Dirk
Chris Nappin wrote:
Hi,
I've been trying to get per-user connection pooling working with Oracle 9i, Tomcat and DBCP: i.e. NOT putting any username or password in the JNDI settings, then calling "getConnection(username, password)" instead of "getConnection()".
As far as I can see there are two approaches with DBCP:
1. use the driver "directly" via org.apache.commons.dbcp.BasicDataSourceFactory; 2. use the driver "indirectly" via the DriverAdapterCPDS wrapper functionality and org.apache.commons.dbcp.datasources.PerUserPoolDataSourceFactory.
The second method may be fixed in the next nightly build (thanks Dirk Verbeeck) but so far seems to be quite slow (only 10% quicker than direct connections). Has anyone ever got the first method working? I get an exception thrown from the Oracle Driver itself:
java.sql.SQLException: invalid arguments in call at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134) at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179) at oracle.jdbc.dbaccess.DBError.check_error(DBError.java:1160) at oracle.jdbc.ttc7.TTC7Protocol.logon(TTC7Protocol.java:183) at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:346) at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java: 468) at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:314) at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverC onnectionFactory.java:37)
I've raised an iTAR (bug report) with Oracle but the comments so far from Oracle support have been to put the blame on the JNDI/DBCP code...
Regards
Chris Nappin
Senior Analyst Programmer
ABM United Kingdom Limited
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