Issue1096

Hello,

When I try to connect to Oracle using ojdbc6.jar on Java 1.6u7, with the
program:
{{{
from com.ziclix.python.sql import zxJDBC
...
dbora = zxJDBC.connect(dora,uora,pora,vora)
...
}}}

I have the message:

[oracle@vbh-app-ptd01 jython]$ bin/jython testenv.py
4 août 2008 12:20:40 oracle.jdbc.driver.OracleDriver registerMBeans
GRAVE: Error while registering Oracle JDBC Diagnosability MBean.
java.lang.NullPointerException
        at
oracle.jdbc.driver.OracleDriver.registerMBeans(OracleDriver.java:304)
        at oracle.jdbc.driver.OracleDriver$1.run(OracleDriver.java:213)
        at java.security.AccessController.doPrivileged(Native Method)
        at oracle.jdbc.driver.OracleDriver.<clinit>(OracleDriver.java:209)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:169)
        at com.ziclix.python.sql.connect.Connect.__call__(Connect.java:87)
        at org.python.core.PyObject.__call__(PyObject.java:251)
        at org.python.core.PyObject.invoke(PyObject.java:3358)
        at org.python.pycode._pyx0.f$0(testenv.py)
        at org.python.pycode._pyx0.call_function(testenv.py)
        at org.python.core.PyTableCode.call(PyTableCode.java:182)
        at org.python.core.PyCode.call(PyCode.java:14)
        at org.python.core.Py.runCode(Py.java:1200)
        at
org.python.util.PythonInterpreter.execfile(PythonInterpreter.java:155)
        at org.python.util.jython.main(jython.java:224)

But it seems that the connection is OK and the python program doesn't
crash. I don't have this problem with jython 2.3+. I use the last
version of ojdbc6.jar.

Best regards.

Stéphane.

This boils down to this line failing in oracle.jdbc.driver.OracleDriver:
       Class class1 =
Class.forName("oracle.as.jmx.framework.PortableMBeanFactory");

Running jython with the "--verify" flag silences the error.  Without
that flag, jython loads itself in the system classpath, which causes
problems with dynamic class loading from elsewhere in the CLASSPATH
heirarchy.  

So this is a much bigger issue.  In this particular case, the failure is
relatively benign because Oracle continues if it isn't able to register
the driver as an MBean, but the general problem will crop up elsewhere.

I opened #1127 describing the general issue which is causing this problem.

Boot path problem, should be fine now