iBatis for Oracle 8i

[KK <kk...@gmail.com>]

Hello everyone,
  I want to use iBatis in my application and started researching and
trying to develop a small application. But I have a problem using
Oracle 8i as backend with JDBC, I could succesfully compile classes
and set up configmap and other required xml files after several
attempts, but now it fails with the following error,

java.sql.SQLException: No suitable driver
        at java.sql.DriverManager.getConnection(DriverManager.java:532)
        at java.sql.DriverManager.getConnection(DriverManager.java:171)
        at com.ibatis.common.jdbc.SimpleDataSource.popConnection(SimpleDataSourc
e.java:473)
        at com.ibatis.common.jdbc.SimpleDataSource.getConnection(SimpleDataSourc
e.java:200)
        at com.ibatis.sqlmap.engine.transaction.jdbc.JdbcTransaction.<init>(Jdbc
Transaction.java:26)
        at com.ibatis.sqlmap.engine.transaction.jdbc.JdbcTransactionConfig.newTr
ansaction(JdbcTransactionConfig.java:32)
        at com.ibatis.sqlmap.engine.transaction.TransactionManager.begin(Transac
tionManager.java:35)
        at com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.startTransaction
(SqlMapExecutorDelegate.java:408)
        at com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.startTransaction(SqlM
apSessionImpl.java:113)
        at com.ibatis.sqlmap.engine.impl.SqlMapClientImpl.startTransaction(SqlMa
pClientImpl.java:87)
        at com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.autoStartTransac
tion(SqlMapExecutorDelegate.java:501)
        at com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForObject(S
qlMapExecutorDelegate.java:308)
        at com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForObject(S
qlMapExecutorDelegate.java:297)
        at com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.queryForObject(SqlMap
SessionImpl.java:69)
        at com.ibatis.sqlmap.engine.impl.SqlMapClientImpl.queryForObject(SqlMapC
lientImpl.java:46)
        at ActionTest.main(ActionTest.java:39)

I am using classes12.jar file for connecting to oracle, can someone
help me with this..

Thanks,
Kumar.