SetTableLocation EXTREMELY SLOW IN ORACLE

Question

<p>
Hi I am using the code below to change my database provider at runtime. <br />
Unfortunately this line <code>ReportDocument.ReportClientDocument.DatabaseController.SetTableLocation</code> is extremely slow trying to change table location in Oracle. It takes 2 or more seconds per table so it is unacceptable for us.
Please I need a solution as soon as possible.<br />
It is weird, becaus with SqlServer it works fine! so I don't understand what's the problem with CrystalReports and Oracle.<br />
Ther is anyone who have a solution?<br />
We are using: CrystalReports 12, Oracle 10, 11.<br />
Thank you very much.
</p>
<code>
public partial class _Default : System.Web.UI.Page<br />
{<br />
      protected void Page_Load(object sender, EventArgs e)<br />
      {<br />
            ReportDocument report = this.ChangeConnectionInfo();   <br />    
            this.CrystalReportViewer1.ReportSource=report;<br />
            this.CrystalReportViewer1.RefreshReport();<br />
      }<br />
    <br /><br />
      private ReportDocument ChangeConnectionInfo()<br />
      {<br />
            ReportDocument boReportDocument = new ReportDocument();<br />
            string reportFileName = Server.MapPath("CrystalReport1.rpt");<br />
            //*EDIT* Change the path and report name to the report you want to change.<br />
            boReportDocument.Load(reportFileName, OpenReportMethod.OpenReportByTempCopy);<br />
<br />
            //Create a new Database Table to replace the reports current table.<br />
            CrystalDecisions.ReportAppServer.DataDefModel.Table boTable = new CrystalDecisions.ReportAppServer.DataDefModel.Table();<br />
<br />
            //boMainPropertyBag: These hold the attributes of the tables ConnectionInfo object<br />
            PropertyBag boMainPropertyBag = new PropertyBag();<br />
            //boInnerPropertyBag: These hold the attributes for the QE_LogonProperties<br />
            //In the main property bag (boMainPropertyBag)<br />
            PropertyBag boInnerPropertyBag = new PropertyBag();<br />
<br />
            //Set the attributes for the boInnerPropertyBag<br />
            boInnerPropertyBag.Add("Data Source", "oracle1");<br />
            boInnerPropertyBag.Add("Locale Identifier", "3082");<br />
            boInnerPropertyBag.Add("OLE DB Services", "-5");<br />
            boInnerPropertyBag.Add("Provider", "MSDAORA");<br />
            boInnerPropertyBag.Add("Use DSN Default Properties", "False");<br />
<br />
            //Set the attributes for the boMainPropertyBag<br />
            boMainPropertyBag.Add("Database DLL", "crdb_ado.dll");<br />
            boMainPropertyBag.Add("QE_DatabaseName", "");<br />
            boMainPropertyBag.Add("QE_DatabaseType", "OLE DB (ADO)");<br />
            //Add the QE_LogonProperties we set in the boInnerPropertyBag Object<br />
            boMainPropertyBag.Add("QE_LogonProperties", boInnerPropertyBag);<br />
            boMainPropertyBag.Add("QE_ServerDescription", "oracle1");<br />
            boMainPropertyBag.Add("QE_SQLDB", "True");<br />
            boMainPropertyBag.Add("SSO Enabled", "False");<br />
<br />
            //Create a new ConnectionInfo object<br />
            CrystalDecisions.ReportAppServer.DataDefModel.ConnectionInfo boConnectionInfo = new CrystalDecisions.ReportAppServer.DataDefModel.ConnectionInfo();<br />
            //Pass the database properties to a connection info object<br />
            boConnectionInfo.Attributes = boMainPropertyBag;<br />
            //Set the connection kind<br />
            boConnectionInfo.Kind = CrConnectionInfoKindEnum.crConnectionInfoKindCRQE;<br />
            //*EDIT* Set the User Name and Password if required.<br />
            boConnectionInfo.UserName = "oracle";<br />
            boConnectionInfo.Password = "oracle";<br />
            //Pass the connection information to the table<br />
            boTable.ConnectionInfo = boConnectionInfo;<br />
<br />
            //Get the Database Tables Collection for your report<br />
            CrystalDecisions.ReportAppServer.DataDefModel.Tables boTables;<br />
            boTables = boReportDocument.ReportClientDocument.DatabaseController.Database.Tables;<br />
        <br />
            //For each table in the report:<br />
            // - Set the Table Name properties.<br />
            // - Set the table location in the report to use the new modified table<br />
            boTable.Name = "TABLE1";<br />
            boTable.QualifiedName = "SCHEMA1.TABLE1";<br />
            boTable.Alias = "TABLE1";<br />
<br />
<br />
        <span class="style1">    //<br />
            //THIS LINE IS EXTREMELY SLOW IN ORACLE<br />
            //<br />
            boReportDocument.ReportClientDocument.DatabaseController.SetTableLocation(boTables[0], boTable);<br />
<br /></span>
            boReportDocument.VerifyDatabase();<br />
        <br />
<br />
            return boReportDocument;<br />
      }<br />
}<br />
</code>

Answer 1

I have a very similar issue using Crystal XI, and now more recently XI R2 updated  through SP6.
My database connections for the report utilize ODBC, which is how our application talks to the database, and provides a connection to crystal.
Oracle version is 10g R2, patched on client with 10.3.
I have a common databaes, in which I have views on many tables.  The views depict a collection, and when the report is to run on a different collection I need to change the views on all of the tables (including those in subreports), as well as provide the credentials for connection.
I'm using VStudio2008 C++ with PutLocation( )
First using GetLocation() to find the initial location, then PutLocation to change it
using
IDatabaseTablePtr table;
try {
     strcpy(tableLocation, table->GetLocation());
// make my changes to the table's location (the view)
     table->PutLocation(tableLocation);
catch (_com_error& e) {
// if problems, handle and display errors.
HandleError(NULL, e);
I can have upwards of 20 tables/views in a report, and this can take 1/2 to a full minute to accomplish.
In addition, I optionally provide a user the ability to add criteria and sorting to the report; and perform a table/column collection to show them to the user for seleciton.  This same process is used on all views (including those in subreports), so proper data lists can be provided from the correct views.
Does anyone have a solution for this?
Edited by: BobOfPlanet on Mar 3, 2010 5:58 PM