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borland dataset und jar applets

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Marco Holzmann

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Dec 7, 2004, 12:26:35 PM12/7/04

Ich möchte eine einfache Anwendung als Applet mit Datenbankzugriff
realisieren, welche in einem jar Archiv liegt.

-jdk1.4.2
-oracle9i
-jdbc 1.4 treiber
-jbuilder9 enterprise

Wenn ich im JBuilder die Anwendung starte funktionieren die Anfragen an die
Datenbank. Und es kommen keine Fehler!

Wenn ich aber ein jar file aus meiner anwendung mache, bekomme ich die
untenstehende Fehlermeldung (Stack Trace) in dem Moment, wenn die
Datenbankverbindung aufgenommen wird.
Das jar file samt web server und oracle liegen auf ein und der selbe
Rechner.

Importierte Bibliotheken sind:
dbSwing
jdbc1.4
Data Express

Hab ich vergessen Bibliotheken zu importieren?

Fehlermeldungen:

See com.borland.dx.dataset.DataSetException error code:  BASE+62
com.borland.dx.dataset.DataSetException: Execution of query failed.
        at com.borland.dx.dataset.DataSetException.a(Unknown Source)
        at com.borland.dx.dataset.DataSetException.queryFailed(Unknown Source)
        at com.borland.dx.sql.dataset.QueryProvider.a(Unknown Source)
        at com.borland.dx.sql.dataset.JdbcProvider.provideData(Unknown Source)
        at com.borland.dx.dataset.StorageDataSet.a(Unknown Source)
        at com.borland.dx.dataset.DataSet.a(Unknown Source)
        at com.borland.dx.dataset.DataSet.open(Unknown Source)
        at com.borland.dbswing.JdbTable.bindDataSet(JdbTable.java:2751)
        at com.borland.dbswing.JdbTable.addNotify(JdbTable.java:2735)
        at java.awt.Container.addImpl(Container.java:658)
        at javax.swing.JViewport.setView(JViewport.java:960)
        at javax.swing.JViewport.addImpl(JViewport.java:307)
        at java.awt.Container.add(Container.java:518)
        at db.Applet1.jbInit(Applet1.java:56)
        at db.Applet1.init(Applet1.java:38)
        at sun.applet.AppletPanel.run(AppletPanel.java:353)
        at java.lang.Thread.run(Thread.java:534)
Chained exception:
java.lang.NullPointerException
        at oracle.jdbc.ttc7.O3log.marshal(O3log.java:612)
        at oracle.jdbc.ttc7.TTC7Protocol.logon(TTC7Protocol.java:258)
        at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:362)
        at
oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:536)
        at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:328)
        at java.sql.DriverManager.getConnection(DriverManager.java:512)
        at java.sql.DriverManager.getConnection(DriverManager.java:171)
        at com.borland.dx.sql.dataset.Database.openConnection(Unknown Source)
        at com.borland.dx.sql.dataset.Database.createPreparedStatement(Unknown
Source)
        at com.borland.dx.sql.dataset.o.a(Unknown Source)
        at com.borland.dx.sql.dataset.o.d(Unknown Source)
        at com.borland.dx.sql.dataset.o.f(Unknown Source)
        at com.borland.dx.sql.dataset.QueryProvider.e(Unknown Source)
        at com.borland.dx.sql.dataset.JdbcProvider.provideData(Unknown Source)
        at com.borland.dx.dataset.StorageDataSet.a(Unknown Source)
        at com.borland.dx.dataset.DataSet.a(Unknown Source)
        at com.borland.dx.dataset.DataSet.open(Unknown Source)
        at com.borland.dbswing.JdbTable.bindDataSet(JdbTable.java:2751)
        at com.borland.dbswing.JdbTable.addNotify(JdbTable.java:2735)
        at java.awt.Container.addImpl(Container.java:658)
        at javax.swing.JViewport.setView(JViewport.java:960)
        at javax.swing.JViewport.addImpl(JViewport.java:307)
        at java.awt.Container.add(Container.java:518)
        at db.Applet1.jbInit(Applet1.java:56)
        at db.Applet1.init(Applet1.java:38)
        at sun.applet.AppletPanel.run(AppletPanel.java:353)
        at java.lang.Thread.run(Thread.java:534)

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