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java.sql.SQLException: Io exception: Bad packet type	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:162)	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:274)	at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:319)	at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:344)	at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:148)	at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)	at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:545)	at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:194)	at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:144)	at connectionPooling.createDataSource(connectionPooling.java:47)	at connectionPooling.main(connectionPooling.java:17)