Crystal Report ASP Stream to PDF "Failed to retrieve data from the database"

I have a Crystal Report (version XI) that I launch from a VB.NET Web App.  It has worked for months.  Then, yesterday, it suddently stopped working.  I redeployed my files to the web server, thinking maybe something got corrupted out there, but it didn't help.  The code I am using to run the Crystal Report (that worked fine for a long time) is as follows:

    Private Sub ShowReportEmbedded()
        Dim oRpt As sl_List4
        oRpt = New sl_List4
        oRpt.SetDatabaseLogon(strUser, strPassword)

        sSQL.Length = 0
        sSQL.Append("    {SL_LIST.ListSite} = '" & Request.Item("slSite").ToString & "' ")
        sSQL.Append("AND {SL_LIST.ListRev} = '" & Request.Item("slRev").ToString & "' ")
        sSQL.Append("AND date({SL_LIST.ShipListDate}) = date('" & CDate(Left(Request.Item("slDate").ToString, 2) & "-" & Mid(Request.Item("slDate").ToString, 3, 3) & "-" & Right(Request.Item("slDate").ToString, 2)) & "') ")

        oRpt.RecordSelectionFormula = sSQL.ToString

        Dim st As System.IO.MemoryStream
        st = oRpt.ExportToStream(CrystalDecisions.[Shared].ExportFormatType.PortableDocFormat)

        Response.ClearContent()
        Response.ClearHeaders()
        Response.ContentType = "application/PDF"
        Response.AddHeader("Content-Disposition", "inline; filename=list.pdf")
        Response.BinaryWrite(st.ToArray)
        Response.Flush()
        Response.Close()
    End Sub

The error says:  Failed to retrieve data from the database.

Any ideas?
AptDevAsked:
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mlmccConnect With a Mentor Commented:
What has changed on the machine?

mlmcc
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frodomanConnect With a Mentor Commented:
What type of database are you connecting to?  Have you verified that you can still connect from this machine to the database?

It could be many, many things, but my first suspicion would be that either a patch has been applied which has changed the security settings or a firewall has been changed.  In either case, the report cannot reach the database any longer.  Try executing the same report standalone (if you can) in the same location and see if it works that way.

frodoman
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AptDevAuthor Commented:
After reading your question "What changed" it suddenlty hit me that I had added a field to that table.  A little more exploration showed me the line that was causing the problem was the line about dates.   I just worked with it until it worked.  Although I have no idea how the table changed to require the new code, I simply changed from a date to a datetime and it worked flawlessly.  Thank you both for your comments that lead me in that direction.  Here is the only change I made to the above code to get it to work:

sSQL.Append("AND {SL_LIST.ShipListDate} = datetime('" & CDate(Left(Request.Item("slDate").ToString, 2) & "-" & Mid(Request.Item("slDate").ToString, 3, 3) & "-" & Right(Request.Item("slDate").ToString, 2)) & "') ")

Thank you both for your endless help on this forum!
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mlmccCommented:
Anytime you change the table you need to VERIFY THE DATABASE in Crystal.  Under the DATABASE menu

Glad i could help

mlmcc
0
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