sql运行出现java.sql.SQLException: A syntax error has occurred

informix的SQL语句执行出现语法错误的问题，只是一个简单的单表查询的SQL语句：SELECT  first 10  callingnumber FROM  smp.u_uvc_logonuser
在程序里会把这个语句打印出来，这它复制到informix 客户端上，能够执行成功，但是在程序里用JDBC调用执行，就出错了。如下：

java.sql.SQLException: A syntax error has occurred.
        at com.informix.util.IfxErrMsg.getSQLException(IfxErrMsg.java:373)
        at com.informix.jdbc.IfxSqli.a(IfxSqli.java:3208)
        at com.informix.jdbc.IfxSqli.E(IfxSqli.java:3518)
        at com.informix.jdbc.IfxSqli.dispatchMsg(IfxSqli.java:2353)
        at com.informix.jdbc.IfxSqli.receiveMessage(IfxSqli.java:2269)
        at com.informix.jdbc.IfxSqli.executeStatementQuery(IfxSqli.java:1428)
        at com.informix.jdbc.IfxSqli.executeStatementQuery(IfxSqli.java:1401)
        at com.informix.jdbc.IfxResultSet.a(IfxResultSet.java:204)
        at com.informix.jdbc.IfxStatement.executeQueryImpl(IfxStatement.java:1212)
        at com.informix.jdbc.IfxStatement.executeQuery(IfxStatement.java:202)
        at cn.com.dwsoft.collector.impl.db.DBReader.execute(DBReader.java:139)
        at cn.com.dwsoft.collector.CollectReader.run(CollectReader.java:69)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.sql.SQLException
        at com.informix.util.IfxErrMsg.getSQLException(IfxErrMsg.java:373)
        at com.informix.jdbc.IfxSqli.E(IfxSqli.java:3523)
        ... 10 more
请多帮帮。。。。