MySQL Data Source causes a "Failed to Generate Wrapper Class" error

Question

Hi all, I've created a MySQL datasource but when I make it the source for a EJB
I get the error above. I think the error occurs during deployment, rather than
while building. It seems to be having problems with the Data Source URL but I've
checked the syntax and it all seems OK. When I use a WebLogic-supplied, PointBase
datasource the deployment works OK, so it must be the way I've configured/built
my datasource. Any areas I should check before I go further? I'm using 8.1 evaluation
version. Thanks in advance, Roy.

Answer 1

Thanks Flip, I tried your suggestion but I still get the same error. One bizarre
thing is that if I use the"com/mysql/jdbc/Driver", I get a ClassDefinfitionNotFound
error when installing the connection pool, but no such problem if use the traditional
"org/gjt/mm/mysql/Driver". Using this I can at least create a data source but
the class wrapper error is still there. Any more suggestions, anyone?
"Flip" <[remove][email protected]> wrote:
You'll have to go looking for the POINTBASE_HOME, POINTBASE_TOOL and
POINTBASE_CLASSPATH. For me (running RH90), it's in my bea
/weblogic81/common/bin/commEnv.sh. After you comment out those lines,
you'll have to place your MySQL jar someplace. I'm not sure where's
the
recommended place (I've put mine into a /classes folder under my domains
before) and then somewhere reference explicitly the MySQL jar file in
the
classpath.
Then WLS will be able to find your MySQL drivers and your DS should fire
up
just great. Good luck.
"Stephen Felts" <[email protected]> wrote in message
news:[email protected]...
1. Try moving mysql.jar out of jre\lib\ext.
2. set PRE_CLASSPATH=directory\mysql.jar
This is used in startWLS.cmd (take a quick look).
"Roy Crosland" <[email protected]> wrote in message
news:[email protected]...
Thanks Stephen, but can you tell how I place the jar in the classpath?
At
the moment
I have the line: "set
CLASSPATH=%JAVA_HOME%\lib\tools.jar;%WL_HOME%\server\lib\weblogic_sp.jar;%WL
>
_HOME%\server\lib\weblogic.jar;%JAVA_HOME%\jre\lib\ext\mysql.jar;%CLASSPATH%
in the startWLS.CMD file. Should I refer to the mysql.jar elsewhere?
and
is the
jar file itself in the correct directory?
"Stephen Felts" <[email protected]> wrote:
You need to have the mysql jar in the server classpath.
It needs to be before the Pointbase jar(s).
"Roy Crosland" <[email protected]> wrote in message
news:[email protected]...
Hi all, I've created a MySQL datasource but when I make it the
source
for
a EJB
I get the error above. I think the error occurs during deployment,rather
than
while building. It seems to be having problems with the Data SourceURL
but I've
checked the syntax and it all seems OK. When I use a
WebLogic-supplied,
PointBase
datasource the deployment works OK, so it must be the way I'veconfigured/built
my datasource. Any areas I should check before I go further?
I'm
using
8.1 evaluation
version. Thanks in advance, Roy.