Got exception running Sqoop: java.lang.NullPointerException

import --connect jdbc:oracle:thin:@192.168.88.233:1521:ITSPDB2 --username ITSP --password itsp --verbose -m 1 --table HADOOP_TEST
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用sqoop将数据从oracle导出至hive表，报错如下：
14/02/18 15:02:18 ERROR sqoop.Sqoop: Got exception running Sqoop: java.lang.NullPointerException
java.lang.NullPointerException
        at org.apache.sqoop.manager.OracleManager.getPrimaryKey(OracleManager.java:951)
        at org.apache.sqoop.manager.SqlManager.getSplitColumn(SqlManager.java:543)
        at org.apache.sqoop.manager.SqlManager.checkTableImportOptions(SqlManager.java:562)
        at org.apache.sqoop.manager.SqlManager.importTable(SqlManager.java:597)
        at org.apache.sqoop.manager.OracleManager.importTable(OracleManager.java:384)
        at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:413)
        at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:502)
        at org.apache.sqoop.Sqoop.run(Sqoop.java:147)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
        at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:183)
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:222)
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:231)
        at org.apache.sqoop.Sqoop.main(Sqoop.java:240)

JAVA上机实验求圆的面积和周长

操作系统rhel6.3 64位，用ambari安装的hadoop、hive、sqoop
扣版本如下：
hadoop 2.2.0.2.0.6.0-101
hive 0.12.0.2.0.6.1-101
sqoop 1.4.4.2.0.6.1-101

确认sqoop可以正常连接到oracle，用list-tables测试下，连接用的jdbc lib包的名字是什么？

权限问题，hdfs目录是什么用户建立的就用什么用户跑sqoop