CORBA, JDeveloper3112, JDBC SQL Exception

Question

Hello
I have implemented the following in a CORBA server class and deployed it on Oracle 8.1.6.
>>
public String getHelloJDBC() {
try
{ DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
java.sql.Connection conn = DriverManager.getConnection
("jdbc:oracle:oci8:@O41R", "SYSTEM", "MANAGER");
return "OCI 8 driver found";
catch (SQLException e) { return e.toString(); }
>>
The developmment and the deployment was done via JDeveloper 3.1.1.2.
The connection O41R has been setup using Connection Manager of JDeveloper as
JDBC Driver = Oracle JDBC OCI-8 driver
Connection Method = Existing TNS Names
When I test this connection, it says "success".
If I write a program WITHOUT using CORBA - JDBC access works fine.
BUT - If I test this server method from the client code,
System.out.println(corbaInterface.getHelloJDBC());I get error "java.sql.SQLException: No suitable driver".
WHY?
What must I have in my PATH, CLASSPATH for the Oracle JVM to find the OCI-8 driver?
I have D:\OraNT\Bin (Oracle Server) and D:\JD3112\Bin (JDeveloper) in my PATH.
I also have classes12 in my CLASSPATH.
TIA
Anil Apte
null

Answer 1

Hi bandana,
From SAP Note --> 831162
17. Receiver: java.sql.SQLException During First Message Processing
Q: When sending a message to a JDBC receiver channel for the first time after an extended inactivity period, I am observing a java.sql.SQLException in the adapter's processing, which refers to a closed connection or a timeout? What is causing this and how do I work around this problem?
A: The database server has apparently closed the adapter's JDBC connection from the server side. Nevertheless, the message should be processed successfully during the next retry. If you want to completely eliminate the symptoms, enable the setting "Advanced Mode" -> "Disconnect from database after each message processing". Note that this might have a negative performance impact for high-volume processing.
I would recommend you to go through the complete note !!! Very Informative .
Regards,