Error : Oracle.DataAccess.Client.OracleException: ORA-01722: invalid number. Can any 1 help me to resolve this error.

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Following is the query

(" SELECT TO_CHAR(NVL(MAX(ID),0)) FROM BRANCH WHERE UPPER(BRANCHNAME) = UPPER(:VAL) AND COMPANY_ID=:Company_ID ");

C#

o_Cls_OracleConnect.OracleCommand_PreInit(sb.ToString());
         o_Cls_OracleConnect.Parameter_Int32("Company_ID", Company_ID);
         o_Cls_OracleConnect.Parameter_String("VAL", val);

         returnCount = Convert.ToInt32(o_Cls_OracleConnect.ExecuteScalar());
         return returnCount;
     }

C#

public string ExecuteScalar()
    {
        try
        {
            obj_temp = MyCmd.ExecuteScalar();
            if (obj_temp == null)
            {
                s_temp = "";
            }
            else
            {
                s_temp = obj_temp.ToString();
            }
            return (s_temp);
        }
        catch (Exception ex)
        {
            throw ex;
        }
        finally
        {
            if (!(MyCmd == null))
            {
                MyCmd.Dispose();
            }
            MyCmd = null;
        }
    }

The error occurs for above function it catches exception : Invalid number. Can any 1 help me to resolve this error.

Posted 23-Jul-13 20:40pm

Member 9410081

Updated 19-Mar-20 10:35am

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Perry Bruins · Answer 1 · 2013-07-23T20:47:00

Solution 1

Hey,

You are using to_char in your select list and you try to convert it to an int32 in code. This will not work....

Regards, Perry

Posted 23-Jul-13 20:47pm

Perry Bruins

Member 9380142 · Answer 2 · 2020-03-19T10:36:00

Solution 2

In C# Oracle ManagedDataAccess driver use this

C#

Connection.Open();            
OracleGlobalization info = Connection.GetSessionInfo();
info.NumericCharacters = ".,";
Connection.SetSessionInfo(info);
ExecuteNonQuery();
Connection.Close();

Posted 19-Mar-20 10:36am

Member 9380142