i creat connection easlly and fatch data from oracle and delete also easlly uisng "SQLDataSource" for "GridView"  accessing Oracle Data Base but when i wish to do "UpDate" it give me the execption "System.Data.OracleClient.Oracle Exception:ORA-12704:Character Set MisMatch" and application crashed

Please if any one know how to solve

 Have a look at

• http://ora-12704.ora-code.com/
• http://www.error-code.org.uk/view.asp?cl=ORACLE&p=ORA&ec=12704
• http://www.issociate.de/board/post/167094/ORA-12704:_character_set_mismatch_problem_with_DBD::Oracle.html
• http://forums.asp.net/p/938186/1182475.aspx
• http://www.l4ndash.com/Log4NetMailArchive/tabid/70/forumid/1/postid/16484/view/topic/Default.aspx

The following question arise:

• Are you using ASP.NET 2.0 (GridView implies but it is always preferabel to explicitly state your environment)
  
• Which version of Oracle are you working with?
• What data is in the update? Is there anything unusual - e.g. numerics with leading zeros.
  

Hi ,

  remove field type in update parameter and mention type="empty" for all fields.