System.Exception: System.Data.OracleClient requires Oracle client software version 8.1.7 or greater

Solution:

go to :-
C:\Oracle\product\10.1.0\Client_2 folder

follow the below steps:
1) right click on this folder
2) go to properties
3) select "administrator"
4) remove 'Read & Executes' permission
5) again add 'Read & Executes' permission on this folder

there you go...

How to conver database null to zero in Oracle

NVL(field, 0)

for more information visit
http://archives.postgresql.org/pgsql-sql/2002-12/msg00139.php

System.Data.OracleClient requires Oracle client software version 8.1.7 or greater.

System.Data.OracleClient requires Oracle client software version 8.1.7 or greater.

Solution:

Modified the registry key for that. For registry key information visit below web site

http://msdn2.microsoft.com/en-us/library/aa344212(VS.85).aspxhttp://thedotnet.com/nntp/34104/showpost.aspx