Getting “Multiple-step operation generated errors.

问题:

We are in the process to migrate our SQL 2000 box to SQL 2008. But we ran into an issue; when a result set (rows or not) is returned by using a query that has a UNION. Later in the code we try to add a new row and assign field to it but because a UNION was used, when we try to assign a value to the field it gives us a Multiple-step operation generated errors. Check each status value. error. We tried the following code on a Windows XP & Windows 7 and got the same result. But when we change our connection string to point back to our SQL 2000 box we don't get that error any more.

The following example show the problem we are having.

var c = new ADODB.Connection();
var cmd = new ADODB.Command();
var rs = new ADODB.Recordset();
object recordsAffected;

c.Open("Provider=SQLOLEDB;Server=*****;Database=*****;User Id=*****;Password=*****;");

cmd.ActiveConnection = c;
cmd.CommandType = ADODB.CommandTypeEnum.adCmdText;
cmd.CommandText = "create table testing2008 (id int)";
cmd.Execute(out recordsAffected);

try {
    cmd.CommandText = "select * from testing2008 union select * from testing2008";

    rs.CursorLocation = ADODB.CursorLocationEnum.adUseClient;
    rs.Open(cmd, Type.Missing, ADODB.CursorTypeEnum.adOpenDynamic, ADODB.LockTypeEnum.adLockBatchOptimistic, -1);

    rs.AddNew();
    rs.Fields["id"].Value = 0; //throws exception
    rs.Save();
}
catch (Exception ex) {
    MessageBox.Show(ex.ToString());
}
finally {
    cmd.CommandText = "drop table testing2008";
    cmd.Execute(out recordsAffected);
    c.Close();
}

回答1:

The link below is an article that gives a great breakdown of the 6 scenarios this error message can occur:

Scenario 1 - Error occurs when trying to insert data into a database

Scenario 2 - Error occurs when trying to open an ADO connection

Scenario 3 - Error occurs inserting data into Access, where a fieldname has a space

Scenario 4 - Error occurs inserting data into Access, when using adLockBatchOptimistic

Scenario 5 - Error occurs inserting data into Access, when using Jet.OLEDB.3.51 or ODBC driver (not Jet.OLEDB.4.0)

Scenario 6 - Error occurs when using a Command object and Parameters

http://www.adopenstatic.com/faq/80040e21.asp

Hope it may help others that may be facing the same issue.

回答2:

It is type mismatch, try

rs.Fields["id"].Value = "0";

or make sure you assign a Variant to the value.

回答3:

Since I posted this problem, we figured out that the problem was when you do a union the attributes on the fields are not bound (i.e. the attributes: basecatalog, basetable & basecolumn are empty) to remedy our problem we had to force the values of those attributes, by saving the recordset to xml (adPersistXML), change the xml and reopen the recordset from the xml. This rebound the fields and we were able to continue. We know this may not be the most efficient solution, but it was for an older app and we didn't want to rewrite the sql statements. It looks like the main error Multiple-step operation generated errors. Check each status value. is related to when an error occurs when a value is assigned to a field.

回答4:

Two things I can think of... Make sure your "ID" column will accept a zero (0). Also - I've stopped this issue on one occasion by not using the adUseClient cursor (try server).

Many times this is a type mismatch, trying to stuff a NULL into a non-null column, or attempting to write more characters into a column than it's designed to take.

Hope this helps. - Freddo

回答5:

I found another scenario:

When I was trying to set the value of a adLongVarChar field in a new record for a memory-only adodb.recordset. In my case, the error was triggered because the string I was passing had a buried unicode character.

回答6:

Same issue occurred to me the problem was that i violated an object property , in my case it was size the error came out as

"IntegrationException: Problem (Multiple-step operation generated errors. Check each status value.)"

  Imports ADODB
  Dim _RecordSet As Recordset  
  _rs.Fields.Append("Field_Name", DataTypeEnum.adVarChar, 50)

  _Recordset("Field_Name").Value = _RecordDetails.Field_NameValue

_RecordDetails.Field_NameValue length was more than 50 chars , so this property was violated , hence the error occurred .

回答7:

I was getting this error when trying to insert/update the field with a value that did not match the table>field type.

For example, the database table > field was

char(1)

however, I was trying to insert/update

"apple"

into the record.

Once I change the inputted value to "a" and it worked.

回答8:

I found this error when our legacy application was trying to parse 1/1/0001 12AM date and time. Looks like VB6 recordsets doesn't like that value. To get rid of the errors, I had to set all the offending dates to null.