db2 查询报ERRORCODE=-4220, SQLSTATE=null，必需的字符转换器不可用。

[lzh_928]

我Java开发用jdbc链接数据库 做查询的时候报这个错误是什么问题，在线等求大神指教。

Hibernate: select userdto0_.id as id55_, userdto0_.ACCOUNTNAME as ACCOUNTN2_55_, userdto0_.CREATEDATE as CREATEDATE55_, userdto0_.CREATEUSERNAME as CREATEUS4_55_, userdto0_.FIRSTLOGIN as FIRSTLOGIN55_, userdto0_.LOCKTIME as LOCKTIME55_, userdto0_.TORGAN_ID as TORGAN13_55_, userdto0_.PASSWORD as PASSWORD55_, userdto0_.PWDERRORCOUNT as PWDERROR8_55_, userdto0_.PWDUPDATETIME as PWDUPDAT9_55_, userdto0_.REMARK as REMARK55_, userdto0_.TGROUP_ID as TGROUP14_55_, userdto0_.USERSTATE as USERSTATE55_, userdto0_.USERNAME as USERNAME55_ from TSYS_USER userdto0_ where userdto0_.ACCOUNTNAME=?
2016-10-26 10:30:22,902 10:30:22.902 [1710950162@qtp-1196765369-3] ERROR org.hibernate.util.JDBCExceptionReporter- [jcc][t4][10199][10462][3.50.152] 必需的字符转换器不可用。 ERRORCODE=-4220, SQLSTATE=null

[花谢尊前不敢香]

是不是数据库里有乱码。