Question

This migration seem to be really challenging. What i’m trying to do now is to execute simple queries to a oracle db table:

OBJECTID NOT NULL NUMBER,
DOUBLEVALUE NOT NULL FLOAT(126),
MODTIME DATE

when I use System.Data.OracleClient I can INSERT parametrized queries where parameter values are:

123, 
"123.123", 
DateTime.Now.ToString(). 

and DbParameter.DbTypes are:

DbType.Int32,
DbType.Double,
DbType.Date

If I use Oracle.DataAccess.Client this is not working:

For DOUBLEVALUE I get exception because in my system Convert.ToDouble (which is called by OracleParameter.PreBind_Double) expects that I use comma (“123,123”). I do not want to change all the values in all programs and files. Also OleDb can handle this without problems.

For MODTIME I get “ORA-01830: date format picture ends before converting entire input string.” This works if I change the value to DateTime.Now.ToShortDateString(). Possibly also if I change the parameter type. Also this OleDb can handle.

It seems ridiculous that Oracle.DataAccess.Client cannot handle these really basic situations which System.Data.OracleClient and System.Data.OleDb have no problems. Any recommendations?

Thanks & Best regards -Matti

Answer 1

Your problem with the comma comes from the default culture used by your processing thread. Try forcing en-US culture:

Thread.CurrentThread.CurrentCulture = CultureInfo.GetCultureInfo("en-US");