Error in MS-Visual Studio to Oracle 10g r2

[k_murli_krishna]

1) We have Oracle 10g r2 in Windows 2000 server.
2) We have MS-Visual Studio .NET on windows 2000 serrver & working from application to this Oracle server to which Oracle client is configured.
3) We get following errors:
An unhandled exception of type 'System.AccessViolationException' occured in System.Windows.Forms.ddl.
Additional information: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
4) We found that some of the essential memory parameter values were insufficient & tried to increase in web based OEM. But it threw a warning & hence we made explicit entries in init.ora and restarted instance and database specifying this init.ora file as follows:
###########################################
# SGA Memory
###########################################
sga_target=0
shared_pool_size=150m
db_cache_size=400m
large_pool_size=150m
java_pool_size=150m
sga_max_size=1024m
5) Even now the error persists. Can you please let us know how to solve this tricky problem.
6) Generally in 8i and 9i the default database parameters are good enough for applications to connect and work with.
7) Is it anything to do with ASM enabled or not. The application is working fine against SQL Server.

Thanks in advance.

 

[JohnH]

Far fetched perhaps, but someone at a blog claims "The cause of this is not calling .Read() on your OracleDataReader before calling .GetValue()."
http://www.ben-rush.net/blog/CategoryView,category,Computing.aspx

Was it on the .GetValue() method your code failed, too?