Eclipse (Mule ESB) Error: java.sql.SQLException: Error trying to load driver

Question

From Eclipse I added a database connection using JDBC. To do this I did the following

I created a User Library, as follows

Windows -> Preferences -> Java -> Build Path => User Libraries

Then press the 'New' button, and create a lib

Then hit the 'Add External JARs' button to add JARS external to ECLIPSE

From there I loaded the following files:

db2jcc.jar
db2jcc_license_cu.jar

Then I added the User Library I created to the project Build path as follows:

• Rt click on the project
• click on Properties
• Click on "Java Build Path"
• Check "TEST_LIB" (the name of the User Library

Then I selected the Driver name class from the wizard (now that the libraries are in the project, magically the GUI can see the class name

com.ibm.db2.jcc.DB2Driver

I select the class name and put in a url, and TEST THE CONNECTION

The test of the connection is SUCCESSFUL !!!!

I am happy so I pop in a prepared statement:

SELECT SUM(BALANCE) FROM ACCOUNT

And then I run the flow as a "Mule Application"

But when I sent an http message to it I get the following error:

java.sql.SQLException: Error trying to load driver: com.ibm.db2.jcc.DB2Driver :
com.ibm.db2.jcc.DB2Driver (org.mule.module.db.internal.domain.connection.Connect
ionCreationException). Message payload is of type: String

So I can now test the connection when the flow is not running, but when the flow is running, it can not find the driver I used to test the connection with

Any ideas of where I should look to resolve this issue

Answer 1

STUDIO packages your app and deploys this in Mule server, in doing this it is not packaging the jars you are adding via user libraries. A workaround is to ass the jars via "Add external jars" in "Java Build Path" of the project