用SAS远程登录数据库，账号密码都对，为什么还是会出错。

代码：

LIBNAME WRDS 'F:\';
%let wrds = wrds.wharton.upenn.edu 4016;
options comamid=TCP remote=WRDS;
signon username=_prompt_;
rsubmit;
libname crspa '/wrds/crsp/sasdata/a_stock';
proc sql;
        create table example as
        select *
        from crspa.dsf;
quit;
proc download data=example out=wrds.example1;
run;
endrsubmit;