MSacceess Upsize Question On Connections And Theory
Mar 6, 2007
Hi all,
I have a general theory question for best practices about upsizing an msaccess 2003 split database design to use SQL server instead of the .mdb for data storage.
My data has grown close to msaccess limit, and ive started experiencing lost connections and corruptions frequently. So the next step is to upsize to SQL.
So far DTS seems to do a better job with bringing in the tables and data (then the upsizewizard).
Does any one have a suggestion on how to deal with the front end connecting the sql backend ?
i understand an ADP project file uses OLE connection, is that a better solution then linked tables directly into SQL threw ODBC ?
Reason i ask is the linked tables seem to not break as many things inside the code.
Hi,i'm working on a project for convert from a mdb AccessXP(2002)application backend to SQL Server Express 2005.In the past i convertend a similar backend to SQL Server 2000.My problem is: I have many fields on mdb backend with spaces in fieldname (i know bad thing)With SQL Server 2000 I had no problem because it recognize the fieldcorrectly with syntax [field name]but now with SQL Server Express 2005 i'm experiencing problems....infact it wants to write the field in this way 'field name'.Now...what do u suggest me?Go back to SQL Server 2000 or change all the field names? this isbecause with the character ' apex i have many problem in SQL syntax.Thank u in advanceByeRob
Problem:Upsize a backend MSAccess 2002 Database to SQL Express 2005Explored:Tried using the upsizing wizard from Office XP(2002), Two tables always get skipped.***! The two tables skipped data only, the tablename and data structure were created.Tried to install UPSize Pro, installation failed.I decide to try it in VWD 2005, here is my code so far but it keeps erroring out. Dim cn As System.Data.OleDb.OleDbConnectionDim cmd As System.Data.OleDb.OleDbDataAdapterDim ds As New System.Data.DataSet()cn = New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source='C:Documents and SettingsBillMy DocumentsVisual Studio 2005WebSitesWebSite1App_DataData for Database.mdb';Persist Security Info=True")cmd = New System.Data.OleDb.OleDbDataAdapter("select * from Service_Orders", cn)cn.Open()cmd.Fill(ds)cn.Close()
Dim connDest As New Data.SqlClient.SqlConnection("Data Source=WLOCKLAPTOPSQLEXPRESS;Initial Catalog='Data for DatabaseSQLND1';Integrated Security=True")connDest.Open()Dim oBCP As New Data.SqlClient.SqlBulkCopy(connDest)oBCP.DestinationTableName = "Service_Orders"oBCP.WriteToServer(ds)oBCP.Close()connDest.Close() It erors on Line oBCP.WriteToServer(ds)with......System.InvalidCastException was unhandled by user code Message="Unable to cast object of type 'System.Data.DataSet' to type 'System.Data.IDataReader'." Source="App_Web_hb6xyamq" StackTrace: at ASP.xfer_data_aspx.Button1_Click(Object sender, EventArgs e) in C:Documents and SettingsBillMy DocumentsVisual Studio 2005WebSitesWebSite1xfer data.aspx:line 30 at System.Web.UI.WebControls.Button.OnClick(EventArgs e) at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)I'm open for ANY suggestions, I do not have access to DTS, its not in the Express addition. Thanks in advance.Bill
I doing Coldfusion web development using MS Access, but the final product needs to use SQL Server. Is there a way for me to upsize from MS Access to SQL Server without having to purchase/install SQL Server?
How do I select * remaining Records of a table that don't fall true to the 2nd Select statement? Select * From zz_2007_Booth_Visitors
NOT IN
Select * From zz_2007_Booth_Visitors Where [Product Interest - Actuators] Is Null And [Product Interest - Other Actuator] Is Null And [Product Interest - Chillers] Is Null And [Product Interest - Other Chiller] Is Null And [Product Interest - Electronic Products] Is Null And [Product Interest - Other network interfaces] Is Null And [Product Interest - Fittings] Is Null And [Product Interest - High Vacuum] Is Null And [Product Interest - Other high vacuum actuators] Is Null And [Product Interest - Pick& Place and Transfer] Is Null And [Product Interest - Teflon Products] Is Null And [Product Interest - Training] Is Null And [Product Interest - Valves& Manifolds] Is Null
I am having a problem with my team mates believing that primary keys need to be unique. I have the following data listed below and I am getting a violation of a primary key constraint. The primary keys for this table are request, business_req_id and test_case_id. I beleive the error is happening due to the data not being unique. Am I correct?
I am having a problem with my team mates believing that primary keys need to be unique. I have the following data listed below and I am getting a violation of a primary key constraint. The primary keys for this table are request, business_req_id and test_case_id. I beleive the error is happening due to the data not being unique. Am I correct?
I have always heard that much of t-sql is based on "set theory". I had Set theory in high school and I remember it as being simple Unions, Intersections, Differences of Sets. By a Set I mean a collection such as {2,5,7,8,9, ...) That could well described a single row in a table. By unioning several of these rows we could end up with a table.
But how does that relate to t-sql such as
select * from <table name> Where <condition 1> ?
Is it simply that the result returned by the query is a Set? (if so, a Set is simply being used as a synonym for a Collection. No set theory involved.)
I have been tasked with creating a Data Warehouse.
Problem is that old storage vs reporting debate.
I have determined that the data that I will recieve and store will be like follows (simplified form) for expandability
KEY FldKEy FldData DateTime AuditTrail
Daily I will use this data based on use input process this data into the following format and say if fldkey/ flddata open a cycle. populate row with null close date if fldkey/ flddata closes cycle update row with date
If fldkey/ flddata changes a cutable value update row
if fldkey/ flddata changes a cutable value (type 2 table) insert a row into detail update value and obsolete previous row.
KEY DateStart DateEnd FLDDATA1 FLDDATE2 Op_Cl_IND HEADER Record
Problem: FLDKey is a finite count however the max is undefined.
IS there any way to solve the problem of not being able to nail down users to tell you what they want to cut by. What I have been instructed by mgr (old IDMS) is that they wish to see all on the FldData and have the ability to cut by all of it. However the Flddata could be anything (cannot be indexed).
400,000,000 rows at least.
Do I need to nail the users down or am I am missing something.
I understand that there is much involved in figuring up I/Othroughput, but I'm hoping the answer to the following question willbe a simple A, B OR C.Given the configuration below, what hardware component wouldbottleneck first.A. Drive Spindle ThroughputB. SCSI ControllerC. Other Component(if so what component?)Configuration:Controller: Ultra320RAID Config: RAID 5Drives on RAID: 14 - 73gb/15k - SCSI DrivesType of Writes: RandomQuestion Background:I currently have the configuration above on a local box. Our companyhas ordered a SAN and and has space set aside. What I'm trying toacertain is whether or not I'd be better off staying local or ifputting my DB on a SAN would be more beneficial.Other Notes:I've determined using a formula that determines the max theoreticalI/O operations/sec for the # of drives (spindles) and RAID Config...but I've not been able to establish a relationship betweenOperation/sec -> MB/Sec. I'm sure this is for obvious reasons...If anyone has had a related scenario, I'd be interested in hearingyour thoughts.Thanks,Ornac
Hi, our application is failing sometimes, with some select queries. After making traces in the database, I found the following error: Missing join predicate. I googled that, and I only found this useless tip:
Missing Join Predicate: Indicates whether or not the query in question has a join predicate. If not, this can cause the Query Optimizer to produce a less than optimized query plan. The fix to this is to add a join predicate.
So, I dont know what a join predicate is... maybe I used it, but I don't know it by that name.
My co worker designed a database where retail items can be placed in multiple catagories. This seems odd to me..... In general, Isnt it more normal than not to be only one catarory for each item? For example, lets say I was selling a bowling ball with a picture of Mickey Mouse on it. I can then find this item in the "Mickey Mouse" catagory or in the "bowling ball" catagory but in the database the bowling ball has only one catagoryID. When I worked for a multi-million dollar corporate retail store , an item was listed once in only one catagroy. But i am sure items can be viewed
I know there isnt a single rule, I am just looking for a solution. How should the database sturucture be built with this in mind starting out with what is listed below???? Mabey an attributes table?
I like writing concise and compact sql code without cursors if possible. My current dilemma has me stuck though.I have 3 tables, but one of them is optionally used and contains a key element of TimeOut to determine which Anesthesia CrnaID to use. It is the optionally used part that has me stumped.
Surgery table CaseID Patient (Sample data: 101,SallyDoe 102,JohnDoe)
AnesthesiaTime table (this table is optionally used, only if the crna's take a break on long cases) CaseID CrnaID TimeIn TimeOut (Sample data: 102,Jack,0800,1030 102,Bart,1030,1130 102,Jack,1130,1215)
Select Patient INNER JOIN Anesthesia produced too many case results. So, I figured out there is an AnesthesiaTime table that only gets used if the anesthesia guys take time-outs. That doesn't happen all the time. I could use TOP 1 on the Anesthesia table, but technically I need to read the AnesthesiaTime table and locate the last time and pull that crna, Jack. I'm not sure how to deal with an optional table. I believe the IF Exists will be pertinent, but not sure of how to build this query. I've tried subquery without success.
Hi there, Here we have got a asp.net application that was developed when database was sitting on SQL server 6.5. Now client has moved all of their databases to SQL server 2000. When the database was on 6.5 the previous development team has used oledb connections all over. As the databases have been moved to SQL server 2000 now i am in process of changing the database connection part. As part of the process i have a login authorization code. Private Function Authenticate(ByVal username As String, ByVal password As String, ByRef results As NorisSetupLib.AuthorizationResult) As Boolean Dim conn As IDbConnection = GetConnection() Try Dim cmd As IDbCommand = conn.CreateCommand() Dim sql As String = "EDSConfirmUpdate" '"EDSConfirmUpdate""PswdConfirmation" 'Dim cmd As SqlCommand = New SqlCommand("sql", conn)
cmd.CommandText = sql cmd.CommandType = CommandType.StoredProcedure NorisHelpers.DBHelpers.AddParam(cmd, "@logon", username) NorisHelpers.DBHelpers.AddParam(cmd, "@password", password) conn.Open() 'Get string for return values Dim ReturnValue As String = cmd.ExecuteScalar.ToString 'Split string into array Dim Values() As String = ReturnValue.Split(";~".ToCharArray) 'If the return code is CONTINUE, all is well. Otherwise, collect the 'reason why the result failed and let the user know If Values(0) = "CONTINUE" Then Return True Else results.Result = Values(0) 'Make sure there is a message being returned If Values.Length > 1 Then results.Message = Values(2) End If Return False End If Catch ex As Exception Throw ex Finally If (Not conn Is Nothing AndAlso conn.State = ConnectionState.Open) Then conn.Close() End If End Try End Function ''' ----------------------------------------------------------------------------- ''' <summary> ''' Getting the Connection from the config file ''' </summary> ''' <returns>A connection object</returns> ''' <remarks> ''' This is the same for all of the data classes. ''' Reads a specific connection string from the web.config file for the service, creates a connection object and returns it as an IDbConnection. ''' </remarks> ''' ----------------------------------------------------------------------------- Private Function GetConnection() As IDbConnection 'Dim conn As IDbConnection = New System.Data.OleDb.OleDbConnection Dim conn As IDbConnection = New System.Data.SqlClient.SqlConnection conn.ConnectionString = NorisHelpers.DBHelpers.GetConnectionString(NorisHelpers.DBHelpers.COMMON) Return conn End Function in the above GetConnection() method i have commented out the .net dataprovider for oledb and changed it to .net dataprovider for SQLconnection. this function works fine. But in the authenticate method above at the line Dim ReturnValue As String = cmd.ExecuteScalar.ToString
for some reason its throwing the below error. Run-time exception thrown : System.Data.SqlClient.SqlException - @password is not a parameter for procedure EDSConfirmUpdate. If i comment out the Dim conn As IDbConnection = New System.Data.SqlClient.SqlConnection and uncomment the .net oledb provider, Dim conn As IDbConnection = New System.Data.OleDb.OleDbConnection then it works fine. I also have changed the webconfig file as below. <!--<add key="Common" value='User ID=**secret**;pwd=**secret**;Data Source="ESMALLDB2K";Initial Catalog=cj_common;Auto Translate=True;Persist Security Info=False;Provider="SQLOLEDB.1";' />--> <add key="Common" value='User ID=**secret**;pwd=**secret**;Data Source="ESMALLDB2K";Initial Catalog=cj_common;' />
Just a quick question about connection management. My application willnever need more than 1 or 2 connections about at any given time. Also, I donot expect many users to be connected at any given time. For efficiency, Iwould like to keep connections alive throughout the lifetime of the objectsrequiring them, rather than opening a new connection, executing code andthen closing it again. What is the most efficient way of doing this?Should I perform the open/close or just one open when I create the objectand a close when I dispose of it?
Hi I have some simple questions of for MS SQL. Say I have a database with a table Called Company. In this table I have Employee's with these columns(EmployeeID<PK>, FirstName, LastName) Now I am inserting some data like this.EmployeeID FirstName, LastName------------------------------------------------------- 1 Bob Smith2 Joe Mitter Now Say I have this situation(this will look weird for this example but for another examples and the stuff I am working on it make sense). Say I have a new Employee Called Jessica White. Jessica must be the second record. So I need to insert it between the 1st and 2nd record. Like I said I am very noob at doing this stuff so I am not sure how I would do it. I first was going to my table and then went to modify. This brought up a blank grid with all my column names. I then started to add all my data in. I found out later to make my life easier I need to enter in certain spots null rows in it to help with formating(otherwise I would have had to figure out a way to do make null rows with c# code). I then went back to this grid and I tried to add a record before the data just like you if you used excel. I quickly found out you can not do that. This resulted me having to recreate the table and reput the all the data back in(this told me I was doing something very very wrong). I was then thinking of writing it with a query and I been playing around with it and still running into problems like say I had a table called test with a coloum called id<PK> and testss(yes bad names just playing around though).So if I did something like this:INSERT INTO testVALUES(2)INSERT INTO testVALUES(1)SELECT * FROM testNow I am trying to figure out how to insert something between rows 1 and 2. Would I have to drop the table or delete all the data and then run a saved copy of my script with the added change or what?My second question is what is a good site that has examples of all the commands(I don't want to read a book on it I have had a oracle sql course and well it was just boring and I did not learn too much.). I think the best way for me to learn is just continue doing my site and picking it up on the file and when I got a problem read about it and ask on the forums. Thanks
Very strange event. Installed new machine into NT 4 network, which has a PDC and a BDC. We have copies of all SQL databases on both the PDC and the BDC. I installed SQL 7 on new workstation. Throught Control Panel/ODBC connections I can reach the SQL files on bith the PDC and BDC. Howver when I try to use Enterprise Manager, I can connect to the tables on the PDC, but not the BDC. SQL lists both machines in the server group, but only allows me to access tables on PDC! Here is the Event information that I recived on the BDC:
The computer IVR1 tried to connect to the server NTBACKUPSERVER using the trust relationship established by the MASSCOM domain. However, the computer lost the correct security identifier (SID) when the domain was reconfigured.
HI all, I have a problem here. I am having two computers both are loaded windows NT 4.0 AND SERVICE PACK 4 AND ALSO I INSTALLED SQL SERVER 7.0. Now i want to connect those two servers , so pls anyone suggest me how i have to do.I connected both servers thru HUB. Pls suggest me.. thank u..
I figure anyone who has done VB and SQL Server might have run into this. > > I am set up as a DBO on SQL Server with access to db1 and db2. My default > is set to db2. From my local machine, I can log through VB(DSN-less) in > to > either one without a problem. BUT, if I go to another machine and try to > log in through VB(DSN-less) to db1, it rejects my login. Here is my > connect > string : > > UID=xxxxxxx;PWD=pedro;DATABASE=db2;DRIVER={SQL > Server};SERVER=Athens;DSN=``; > > The only thing that changes when I log into db1 is the database parameter- > "DATABASE=db1". > > Am I doing something wrong here? Is there something that needs to be > setup > differently in SQL Server? Do I need to put something else into the > connect > string? > > This happens for the other developers as well, not just me. > > Any help would be GREATLY appreciated.
I am looking for some ideas on the following DTS challenge: I need to import the data from an Access 97 database into a set of tables(about 25). The location of the database can be anywhere on the users drive(s) and I will need to get the location of the database from a registry setting and use it to define the connection.
We have a case where a user is using Excel sheet to connect the database on SQL2K and generally his connection runs in the upper 150 in numbers. He generally gets more than 150 connections open.
I know that it's not a good thing, but is there a way to limit it or even kill it after it reaches max?
What are the disadvantages of opening too many connections?
I'm getting the classic message "The timeout period elapsed prior to obtaining a connection from the pool" etc when connecting to my SQL Server 2005 Express from a .Net application. Then I try connecting, simultaneously, from a simple ASP.net thing I wrote just for testing and this works fine. So, then the connection pool can't be full, can it? Or, does each application have its own pool??
have been looking for ages for somewhere that might be able to answer my question so thought i'd try here.
anyhows, my place of work have goldmine 6.7 running on a server. the problem is that some of the client machines seem to be taking 2 connections to the server when logged into goldmine and some only 1.
when looking at the open sessions it shows a second for some users accessing pipesqlquery. all users show this but only some show it as a second connection.
As most of you are aware, when you close a VB.NET connectrion to a SQLserver, the connection doesn't actually drop right then and there.From my tests, using VB.NET 2003 and SQL2K, the connection doesn'ttimeout and drop off for 6 1/2 minutes. How can one force thisconnection to immediately drop off with code?
HiI am a dba for sql server recently we are facing problems with the no ofconnections.we have a database called ( x ) every day almost million users is using thatdatabse after some time the cpu showing 100 percent utilization an errorthrowing like odbc error connection so in that case no one is able to connectto the server.when we pause it then restart the server for some time it looksgood then again it will go to 100 % utilization.but there is no blockingoccuringif anyone knows this problem please helpyour help would be appreciated.Thanks--Message posted via SQLMonster.comhttp://www.sqlmonster.com/Uwe/Forum...eneral/200510/1
im writing a service that will be on a app serverthis is one of many service's to process Recordsets from Sql Server...1 service may have 20 Processes to Completeexamplemain class PreProcess()method CleanNames();method updateNames();methodr ValidateContracts();Various things must be completedSuedo Example belowMy question isin the main class make my connection and keep it for all sub membersor connect in each memberA. This Way opens connection...closes connectmethod cleanNames()1 get connection2 get recordset3. Close Connection4 process Recordset5. Open Connection4 Commit Changes6. Close Connection()finished cleanames()ormethod cleanNames()1 get connection2 get recordset3 process Recordset4 Commit Changes5. Close Connection()finished cleanames()orthis final way is in the parent Class or Calling Functionsends in the connections holds it open till the service iscompleted of all jobs its Suppose to dothen releases the connectionmethod cleanNames(oconn) connection as parameter1 get recordset2 process Recordset3 Commit Changesfinished cleanames()ThanksDaveP
