Problems retreiving varchar attributs from oracle.sql.STRUCT

Hi,
I have downloaded the Java + Oracle Object Types examples from the oracle homepage, but instead of the varchar values from a STRUCT the Java-application just displays "???". Numbers and dates are displayed correct.
Im running JDK1.4 on Windows and Oracle 9.2.0.8 on Unix with corresponding JDBC driver
Any idea?
Thanx in advance,
Jo

Jo,
I'm guessing it has something to do with your NLS / I18N settings.
Do you know what they are?
Usually, both JDK and Oracle assume an American environment.
In other words, American English, etc.
Is your environment different to this?
Good Luck,
Avi.

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try {
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>
Our live servers are working fine. Our development server now is spewing out a java.lang.NoClassDefFoundError: oracle/sql/STRUCT error whenever it encounters a servlet or page which uses this class.
ojdbc14.jar and sdopai.jar were included within the WAR file, and I have tried with them excluded from the WAR file to no avail. We have tried reverting the version of ojdbc.jar on the server to the earlier version, this has made no different.
>
If your code can't find the class then you have the classic NoClassDefFoundError problem you get when any other referenced class can't be located.
The oracle/sql/STRUCT class is in the ojdbc14.jar, ojdbc5.jar and ojdbc6.jar so if it can't be found then that class is missing from the jar you are using (which you can tell by examining the jar contents) or the jar is missing from the classpath being used.
As already mentioned you need the Oracle 11 JDBC files to support Java 1.6
Here is the official Oracle JDBC page that shows the Oracle DB versions supported for each of the JDBC drivers available and also describes the JDBC jars and what JDK versions they support.
http://www.oracle.com/technetwork/database/enterprise-edition/jdbc-faq-090281.html#02_01
>
Which JDBC drivers support which versions of Javasoft's JDK?
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8.1.5 OCI and THIN Drivers - JDK 1.0.x and JDK 1.1.x
8.1.6SDK THIN Driver - JDK 1.1.x and JDK 1.2.x (aka Java2)
8.1.6SDK OCI Driver - Only JDK 1.1.x
8.1.6 OCI and THIN Driver - JDK 1.1.x and JDK 1.2.x
8.1.7 OCI and THIN Driver - JDK 1.1.x and JDK 1.2.x
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9.2.0 OCI and THIN Driver - JDK 1.1.x, JDK 1.2.x, JDK 1.3.x, and JDK 1.4.x
10.1.0 OCI and THIN Driver - JDK 1.2.x, JDK 1.3.x, and JDK 1.4.x
10.2.0 OCI and THIN Driver - JDK 1.2.x, JDK 1.3.x, JDK 1.4.x, and JDK 5.0.x
11.1.0 OCI and THIN Driver - JDK 1.5.x and JDK 1.6.x
11.2.0 OCI and THIN Driver - JDK 1.5.x and JDK 1.6.x
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Hello,
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dan schwemlein wrote:
Joe,
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>
Re: Obtaining an oracle.sql.STRUCT through a pooled JDBC connection
Posted: Jul 16, 2007 3:21 PM
dan schwemlein wrote:
Thanks for the quick response!I was working today...
Thank you for the information about the connection being closed.
I will look into using this configuration setting.
You say that you can describe a way to get a handle on an unwrapped
pool object using some documented WLS-specific code. Are you referring
here to the getVendorConnection() method?yes.
This method does not help me
get the oracle.sql.STRUCT object, because even the connection returned
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It would be great if getVendorObj() were
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Hello,
I am using WebLogic Server 10 and and Oracle 10 and I am trying to obtain a
vendor-specific oracle.sql.STRUCT from a ResultSet using a pooled connection
defined in Weblogic. I need the vendor-specific object, rather than simply
the java.sql.Struct implementation, because a third party library requires it.
What gets returned in the ResultSet is a non-exposed WebLogic wrapper object
which implements java.sql.Struct, but which cannot be cast to an oracle.sql.STRUCT.
I can use reflection on this object to find and call the getVendorObj() method to
obtain the oracle.sql.STRUCT, but this solution is not acceptable because this is
not a published API and is not guaranteed not to change in future versions.Understood. We all benefit from sticking to the J2EE standards,
but we could also wish Oracle had done so with it's driver objects.
I will assume your code is running in the WebLogic server, because
an external JVM can never access the real driver object, which will
always really be in the WLS JVM. No active JDBC object is serializable.
How can I reliably obtain a vendor-specific implementation of java.sql.Struct
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WLS-specific code, though I can describe a way with documented methods,
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and responsibilities: We rely on our wrappers to implement the security
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unrestricted access to the actual connection from most JDBC objects,
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is exposed. Therefore, by default we will close and replace every JDBC
connection so exposed, as soon as the current thread is finished with
the pool connection. This hurts performance. We also document a pool
config setting that will tell us that you take responsibility for any such
problems, and not to close connections just because they've been exposed.
HTH,
Joe
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