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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(Unknown Source) at java.sql.DriverManager.getConnection(Unknown Source)