Showing posts with label developed. Show all posts
Showing posts with label developed. Show all posts

Thursday, March 29, 2012

Failed to Open Rowset Error in Crystal Reports

hello all,

i have developed a desktop application(software) inwhich used Crystal Reports 9. I am using Microsoft Developement Environment 2003 (Visual Studio 2003).The reports in this software runs well on my own system where i developed the software but when I install this software on the computer(client computer), the report does not open when the Generate Report button is clicked. This button click event fills the data using a simple query from databse(SQL Server 2000) and this error is displayed:

Failed to open Rowset.

The .Net Framework 1.1 is installed on the client computer before the software is installed and run.

I also include some merge modules in the setup of the project that I make. These merge modules are:

Crystal_Database_Access_enu2003.msm

Crystal_regwiz2003.msn

Crystal_Database_Access2003.msm

Crystal_managed2003.msm

Please help me to resolve this problem so that on the client computer the reports are displayed and data is shown.

Thanks in advance

hello all again,

I posted this problem yesterday and got no reply yet.

please help me solve this problem. I am in great need of this reporting software but don't know what is missing or wrong which is creating problem

Thanks all of you!

|||

Hi,

I have the exact problem. If some one can reply it will be great.

Thanx.

|||This sounds like a Crystal Reports issue. This forum is for questions regarding SQL Server Reporting Services.

Tuesday, March 27, 2012

Failed to load database information

I have Crystal Report 9 installed. I created rpt in VS2003 and set database as a dataset. Also, I developed a VS2003 dll to print report.

When I called the dll in VS2005, always got the error as the title: Failed to load database information. Even I made up datasource in dll, no luck. So there must be something wrong while calling 2003 dll from vs2005.

Any idea?

If I add CrystalDecisions.CrystalReport.Engine and CrystalDecisions.Shared in vs2005 project as reference, but the version is 9.2.3300.0. I add some codes to print report:

ReportDocument rpt = new ReportDocument();
rpt.Load(@."D:\VS 2005 Projects\CallPrintCrystalReport\CallPrintCrystalReport\CrystalReport1.rpt");
rpt.SetDataSource(CreateDS());
rpt.PrintToPrinter(1, false, 0, 0);
rpt.Close();

Same error!!! Does this mean CrystalReport 9.2.3300 can not be called by VS2005?Probably not, since CR of VS2005 is based-on version XI.|||Thank you. I just wanna make sure about it.sql

Friday, February 24, 2012

Extreme slow SQL Server 2005 and high CPU usage - Casting of values

Hello sql and .net gurus :-)
I have a problem with my websitewww.eventguide.it. It's completly developed under .NET 2 and SQL Server 2005 Express. My problem is the folowing:
The server is a Intel 3Ghz HT processor with 1GB Ram. No other page on the running system is a CPU consuming site. We optimized the SQL statements, the code, the caching and many other parts of the website (pooling on SQL access), but the SQL Server uses about 50% to100% of the CPU and about 400MB RAM all the time. The whole site seems to be very, very slow. In fact there are many of SQL operations on every page request, but we cache a lot of them in different ways (page output caching, application caching). So I don't understand we have so much performance problems. Any suggestions for optimised code in general? I read nearly all of the MS .NET performance papers - but real world experience is the missing part :-)

It is better to cast the values of a SQL reader like this
Dim String1 as String = Ctype(DataReader.item(0), String)
Dim Integer1 as Intger = Ctype(DataReader.item(1), Integer)
or like this
Dim String1 as String = DataReader.item(0)
Dim Integer1 as Intger = DataReader.item(1)

Thanks a lot for your help!
FOX

I visited your site, and honestly I cant answer your question. Your SQL CPU usage seems way off, but the problem appears to be bandwidth entirely.

I pinged your site, and traced it with good solid pathways and quick responses. But going into the Foto's (photos) section resulted in pictures taking an extremely long time to load even after the page was rendered. Why type of up-pipe is that server pushing?

|||What do you mean with: "Why type of up-pipe is that server pushing?"|||

Sorry, horribly formed question:

How much bandwidth is available to the server over your connection, dedicated to "upload"?

|||The upload of the server is about 10Mbit - enough to deliver requests in a fast way.
Well - look now the speed of the entire site. Today I changed the SQL database index of a 2.000.000 rows counting table (counter for images and other things) and from one moment to another I reduced CPU usage dramatically! Now I try to optimize also other table indexes to increase the speed further.
Any suggestions to handle indexes in a good way?
Thanks for your time!!!|||I had close to the same issue. I added the port to the IP addresss in the connection string. Don't ask me why this fixed the issue, but it did. For the RAM issue, I also had this. The server would go up to almost 500-600MB of ram.. and it barely had anything in it!!

So I made a batch script to restart the server, and setup a windows scheduled task to run it every other day.

Here is my batch:
net stop MSSQLSERVER
echo y
net start MSSQLSERVER

net stop hmailserver
net start hmailserver

Basically, this will restart your SQL server. I do this at about 3AM. It keeps the server running top notch as far as I know.

I had to add hmailserver in there because if you don't restart it also, it for some reason will fail to verify accounts. If you don't have hmail, remove it.|||Because if you don't specify the port, it first tries to contact the SQL Server on one of the standard ports, and if it's firewalled, or blocked, then it takes a bit for it to realize it and then switch over. Also, if you a fairly large latency between the web and sql server, it can reduce the time significantly because there is one less connection that needs to be established, and with a normal TCP/IP connection that does a 3-way handshake to start up, it's many times the latency between the two machines.