为什么oracle这样就会报列过长？但这个列名存在的，见表的时候没有报过长，查的时候报？郁闷，如何处理

如下语句：CREATE OR REPLACE VIEW "VW_ASPNET_MEMBERSHIPUSERS"("USERID", "PASSWORDFORMAT", "MOBILEPIN", "EMAIL", "LOWEREDEMAIL", "PASSWORDQUESTION", "PASSWORDANSWER", "ISAPPROVED", "ISLOCKEDOUT", "CREATEDATE", "LASTLOGINDATE", "LASTPASSWORDCHANGEDDATE", "LASTLOCKOUTDATE", "FAILEDPASSWORDATTEMPTCOUNT", "FAILEDPASSWORDATTEMPTWINDOWSTA", "FAILEDPASSWORDANSWERATTEMPTCOU", "FAILEDPASSWORDANSWERATTEMPTWIN", "COMMENT", "APPLICATIONID", "USERNAME", "MOBILEALIAS", "ISANONYMOUS", "LASTACTIVITYDATE") AS
SELECT     ASPNET_MEMBERSHIP.USERID ,
                ASPNET_MEMBERSHIP.PASSWORDFORMAT ,
                ASPNET_MEMBERSHIP.MOBILEPIN ,
                ASPNET_MEMBERSHIP.EMAIL ,
                ASPNET_MEMBERSHIP.LOWEREDEMAIL ,
                ASPNET_MEMBERSHIP.PASSWORDQUESTION ,
                ASPNET_MEMBERSHIP.PASSWORDANSWER ,
                ASPNET_MEMBERSHIP.ISAPPROVED ,
                ASPNET_MEMBERSHIP.ISLOCKEDOUT ,
                ASPNET_MEMBERSHIP.CREATEDATE ,
                ASPNET_MEMBERSHIP.LASTLOGINDATE ,
                ASPNET_MEMBERSHIP.LASTPASSWORDCHANGEDDATE ,
                ASPNET_MEMBERSHIP.LASTLOCKOUTDATE ,
                ASPNET_MEMBERSHIP.FAILEDPASSWORDATTEMPTCOUNT ,
                ASPNET_MEMBERSHIP.FAILEDPASSWORDATTEMPTWINDOWSTART ,
                ASPNET_MEMBERSHIP.FAILEDPASSWORDANSWERATTEMPTCOUNT ,
                ASPNET_MEMBERSHIP.FAILEDPASSWORDANSWERATTEMPTWINDOWSTART ,
                ASPNET_MEMBERSHIP.COMMENT ,
                ASPNET_USERS.APPLICATIONID ,
                ASPNET_USERS.USERNAME ,
                ASPNET_USERS.MOBILEALIAS ,
                ASPNET_USERS.ISANONYMOUS ,
                ASPNET_USERS.LASTACTIVITYDATE 
  FROM     ASPNET_MEMBERSHIP  INNER JOIN     ASPNET_USERS 
      ON     ASPNET_MEMBERSHIP.USERID  =     ASPNET_USERS.USERID ;
报错如下
错误报告:
SQL 错误: ORA-00972: identifier is too long
00972. 00000 -  "identifier is too long"
*Cause:    An identifier with more than 30 characters was specified.
*Action:   Specify at most 30 characters.