BEA WebLogic Server 7 Manual de usuario descargar pdf (Pagina 55)

EJB

™

Development Using Borland

JBuilder

8 and BEA WebLogic Server

™

7.0

When did this happen

I have deployed my EJB JAR file successfully. When I run my test client, I got the above

error message from the Test Client tab of JBuilder message pane.

Cause

The test client is unable to communicate with WebLogic Server.

Solution

Note that the PROVIDER_URL to connect to WebLogic Server is hardcoded in the test

client. The hardcoded value is t3://localhost:7001. If, for any reason, you have started your

WebLogic Server in another hostname or port number, change this value in the test client

TestSesTestClient.java to match the new values.

Error 3: Cannot create connection pool

Error description

java.lang.NullPointerException

weblogic.management.console.utils.MBeans.getMBeanClassNameFor(MBeans.

java:1153)

When did this happen

I tried to create my JDSPool using WebLogic Console. I entered the configuration parameters

and then tried to assign this JDSPool to myserver. (To assign to myserver, I clicked Targets

and moved myserver from Available to Chosen.) I see the above error message in the

WebLogic Server Console.

Cause

The URL name, Driver name, user ID, or password entered in the JDSPool Configuration

may not be correct. If those entries are right, then the Driver Classes may not have loaded

during the WebLogic Server startup.

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BEA WebLogic Server 7 Manual de usuario Pagina 55