Visibility Into Active Transcation Using LINQ To SQL And SQL Server Compact 3.5
Jan 6, 2008
I am talking to SQL Server CE through LINQ to SQL in Visual Studio 2008. I have a table that uses location information as the primary key. The state associated with the location may change so sometimes I add new records and sometimes I update existing records. Before adding records to the table I verify that no existing record exists with the same primary key.
When I query against SQL Server Compact 3.5, I don't pick up records in the active transaction. I thought that the previous version of SQL Server CE did pick up records in the active transaction.
View 3 Replies
ADVERTISEMENT
Feb 13, 2008
Hello,
I'm using SSRS 2005
I'm trying to write an expression for the "Hidden" property of a column in a table. The column is only populated with data if the group on my table is open. If the group is collapsed, then the column is empty. I'd like to make the column hidden if the group is collapsed. So I'm thinking it would be something like this:
=Iif(Table_1_Group.Hidden = "True", "True", "False")
But I can't find anyone who has written this anywhere.
I'm basically trying to make this report do the same thing a matrix does, but the matrix doesn't let me label the columns. I put textboxes above the matrix in line with the columns, but when I deploy the report to ReportManager, the textboxes get thrown all over the place and don't line up with the columns anymore.
So I guess if you can't answer the first question, an alternate question I have is how are you supposed to label the columns (row groups) in your matrix? They don't have headers, if I try to line textboxes up with them they get all messed up during deployment. They have that textbox up there in the top left corner that runs across the top of all of the row group columns, but if I put labels separated spaces in that textbox, the spaces get removed in rendering so the text is pushed all to the left and doesn't line up anymore.
Thanks,
Andy
View 3 Replies
View Related
Jan 22, 2015
I have a table with the following columns employeeSessionID, OpDate, OpHour, sessionStartTime, sessionCloseTime. I need to see how many users remain active per hour. I can calculate how many logged in per hour, but I am stumped on how to count how many are active per hour. I have a single table that stores login data. I have created a query that pulls out the only the data needed from the table into a temp table using this query. Also note it is possible that the sessionCloseTime is null if the device has not been logged out this would need to be counted a active.
TABLE NAME #empSessionLog Contains the time stamp data OpDate, sessionStartTime and sessionCloseTime.
OpDatesessionStartTimesessionCloseTime
2015-01-202015-01-20 14:32:59.1302015-01-20 14:33:14.6299166
2015-01-202015-01-20 06:58:33.7302015-01-20 15:27:16.9133442
2015-01-202015-01-20 09:56:22.8402015-01-20 17:56:29.7555853
2015-01-202015-01-20 05:59:18.6132015-01-20 14:05:19.0426707
[code]....
can see how many sessions logged in per hour with the following statement:
SELECT
opDate,
FORMAT(DATEPART(HOUR, sessionStartTime), '00') AS opHour,
Count(*) AS Total
FROM #empSessionLog
Group BY opDate, FORMAT(DATEPART(HOUR, sessionStartTime), '00')
Order BY opDate, FORMAT(DATEPART(HOUR, sessionStartTime), '00') ASCResults:
opDateopHourTotal
2015-01-20041
[code]....
Where I am stuck is how do I count the sessions that remain active per hour until the session is closed with the sessionCloseTime.
View 5 Replies
View Related
May 12, 2008
Hi
I am newbie in SQL Clustering. I have set up a Windows Server Cluster with 2 nodes and am having the following problem with Physical Disk resource for cluster groups:
My Default Cluster Group (named Cluster Group) has IP Address, Network Name, Physical Disk and MSDTC resources. In addition to that my Default SQL Server instance resources are also in this group. I had this initial set up for Active/Passive mode.
Now I am trying to set up a SQL Cluster in Active/Active mode. For this I have to install another instance of SQL Server in the existing cluster and make a separate cluster group for its resources. I made a new cluster group (SQL Instance Group) with an IP Address and a Network Name resource for this new instance but I dont have any Physical Disk resource to allocate to it. As such while installing the SQL Server Instance I get stuck when I'm asked to select the quorum disk to be used.
Is it possible to configure two quorum disks, one for each group?
What's the concept of dedicated disks resource for each sql instance in a group? Is this same as the quorum disk? If this is not a shared disk how do I configure a dedicated disk resource for my second cluster group (SQL Instance Group)?
Anyone could please help me out with this?
View 12 Replies
View Related
Nov 2, 1999
Hi,
We are trying to set up an active/active configuration of a SQL Server
cluster, and we had a few questions.
Initially, we want to have 2 Database Servers that would share the same
Database (both reading/writing to the same tables).
However, from reading the MS docs, we find out that we can have what
they call an "active/active" configuration using a Cluster but they
need to have 2 different disk sets, i.e. having 2 separate databases.
If this assumption is correct, how does the data get synchronised
between the 2 databases (that are on the 2 different disks sets)?
Can anyone help? thanks
Axel
View 1 Replies
View Related
Oct 12, 2002
ACTIVE/ACTIVE SQL Server 2000 Cluster
This was my plan.
Physical box - box1,box2
virtual box - virtual1
i have a active/passive cluster virtual1 (primary node box1, secondary box2)
I am creating another virtual box on box2 as primary node by name virtual2)
whenever my installation setup runs my default server name is greyed out. it always requires a instance name.
Is that the way it should work?
i can only use instance for active/active failover?
please advice
View 1 Replies
View Related
Sep 27, 2005
Hello folks,
have you ever heard of an Active/Active SQL Sever 2000 Cluster deployed in a pure OLTP environment?
Some 8 years ago I have learned about a bespoke solution for the SAP ERP system (not the BW!) with DB2 Parallel Server for a huge German company. Then again, I would expect that Oracle RAC might fit into an OLTP environment, although I never heard about a real world implementation.
All this led me to believe clustering is good for failover purposes, and for decision support services, not quite for OLTP applications.
So if you see a point in Active/Active Clustering and OLTP please come forward and explain.
Cheers,
Johann
P.S: For those of you who want to know: Consultants from www.hiltes.com want us to deploy an Active/Active Cluster for their Fashion 3000 Net stock software.
View 6 Replies
View Related
Sep 17, 2004
Is the following T-SQL correct, in which I am trying to make sure that th effect of 3 stored procedures gets reversed in case of an error ? I know if in place of stored procedures I had action queries like 'ActionQry1', 'ActionQry2' and 'ActionQry3' then the transaction logic would work. But will it work even if exec(....) statements are there in the transaction ? Each stored procedure is made up of an action query.
begin tran
exec("storeprocedure1('2')")
if @@error=0
begin
exec("storeprocedure2")
if @@error=0
begin
exec("storeprocedure3(122)")
if @error=0
commit tran
else
rollback tran
end
else
rollback tran
end
else
rollback tran
View 1 Replies
View Related
Feb 5, 2008
Hi,
I am new to SQL server.
I have two databases lets call them A & B, they reside in two PCs, each pC has its own C/C++ program
working with A or B, Two PCs are linked by PPP (for example), but the link is not permonent available,
the link is only available at certain time period, for example, at midnight.and the link is only last
certain period, during this period, A & B will do the transcation replica( just heard about that!) to
make them identical, A=B.
Now are my questions.
(1) Can database use dial up modem itself ? For PC program it is not the problem, but I am not sure whether
MS SQL server database can be configured to do such job automatically ?
(2) Can database have awareness of whether the link is available or not ? For example A is dialing modem, and
B realize that there is a incoming call.
(3) Once link is established, how two databases start to do the transcation replica ? Does SQL server has such ability to do this automatically ?
(4) Can database notice PC program that changes has occured ? so PC program can process it, see display new data.
Thanks
nick
View 1 Replies
View Related
Sep 12, 2007
Hi
We are checking VB 9 (Orcas).
we connected to database created under with sql server 7. with this code
Public cn As New ADODB.Connection
Public Sub OpenDB()
cn.Open("Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=False;Initial catalog=Reservation;Data Source=.")
End Sub
this code worked well.
we know sql7 is not compatiable with vista. please tell us how to connect it wiith sql2005 . we downloaded orcas express edition beta. we created a database also. please let u know how to connect with Microsoft SQL Server Compact 3.5 (.NET Framework Data Provider for Microsoft SQL Server Compact 3.5).
Rgds
Pramod
View 7 Replies
View Related
May 5, 2008
Hello,
we've got a SQL Server 2005 which replicates with an SQL Server Compact 3.5. Every 10 to 20 synchronisations we're getting the error mentioned above. A Soft reset of the device helps to make the synchronization working again.
Why is this error happening and how can we resolve this?
BTW, we've also running system that replicates with an SQL Server Compact 3.0 without having this problems.
Thanks,
Markus
View 1 Replies
View Related
Nov 30, 2005
Hello, everyone:
I have to post this problem again because I didn't get the correct way.
I have SQL Server 2000 on client (Windows XP) and server (Windows 2003). DTC is running on both side. There is a transcation like,
BEGIN TRAN
INSERT MyTable SELECT * FROM MyView
COMMIT
MyView get data by:
SELECT * FROM OPENDATASOURCE ('SQLOLEDB', 'Data Source=PROD;UserID=DBDev;Password=WORLDWID').PRODD ata.dbo.CService
PROD is the production server.
When I run this query, there is the error message,
Server: Msg 8501, Level 16, State 1, Line 2
MSDTC on server 'PROD' is unavailable.
Server: Msg 7391, Level 16, State 1, Line 2
The operation could not be performed because the OLE DB provider 'SQLOLEDB' was unable to begin a distributed transaction.
OLE DB error trace [OLE/DB Provider 'SQLOLEDB' ITransactionJoin::JoinTransaction returned 0x8004d01c].
Any idea is appreciated.
Thanks
ZYT
View 2 Replies
View Related
Jan 20, 2004
Hello, Can anyone please explain how the failover processes works on a sql server 2000 2 node active/active cluster.
Given the following
You have 2 node active/active cluster NodeA & NodeB
Question
1. How many SQL instances need to be installed on each node?
2. If the answer to question #1 is one instance per node, then
say if NodeA fails NodeB will take over all the resources of NodeA
including the master database, How does that work , how can once instance (in nodeB) handle two master database i.e its own master database and the one taken over from NodeA.
View 1 Replies
View Related
Mar 11, 2008
Hi there,
everything is ok for first run. but i leave the program relogin
than that error occured ppc2003 second edition devices. Windows mobile 5.0 device works fine.
can anybody help me?
VS2005 ver 8.0.50727
SSCE31VSTools-ENU.exe loaded
SSCE31SDK-ENU.msi loaded
machine 1
SQL 2005 loaded
machine 2
http://192.168.20.22/ssce/sqlcesa30.dll
"Microsoft SQL Server Compact Edition Server Agent" looks fine
pocket pc side
C:Program FilesMicrosoft SQL Server Compact Editionv3.1SDKinwce400armv4
.net cf 2.0 sp2
sqlce30.dev.ENU.ppc.wce4.armv4.CAB
sqlce30.ppc.wce4.armv4.CAB
sqlce30.repl.ppc.wce4.armv4.CAB installed too.
my code
---------------------------------------------
Dim RdaStr As String = "Provider=SQLOLEDB; Data Source=" + Server + ";Initial Catalog=" + DataBase + ";Integrated Security=SSPI"
Dim rda As SqlCeRemoteDataAccess
Try
rda = New SqlCeRemoteDataAccess "THIS LINE GIVES ME THAT ERROR
Catch ex As Exception
MsgBox(ex.ToString)
Application.Exit()
End Try
Try
rda.InternetLogin = [String].Empty
rda.InternetPassword = [String].Empty
rda.InternetUrl = "http://" + IP_no + "/ssce/sqlcesa30.dll"
rda.LocalConnectionString = ConnectString
Catch ex As Exception
MsgBox("Bağlantı hatası..")
Application.Exit()
End Try
------------------------------------------------------------------------------
i added the following code to very beginning of my code too.
that code lock my device
Declare Function LoadLibrary Lib "coredll" Alias "LoadLibrary" (ByVal lpLibFileName As String) As IntPtr
Dim pt As IntPtr
pt = LoadLibrary("\windowssqlceca30.dll")
pt = LoadLibrary("\windowssqlceoledb30.dll")
pt = LoadLibrary(\windowssqlcecompact30.dll)
-----------------------------------------------------------------------------
View 4 Replies
View Related
Nov 8, 2006
Will Linq be compatible with Sql Server Everywhere without having to add additional plugins?
View 7 Replies
View Related
Mar 31, 2008
I have an example : A Simple Database Query using LINQ to SQL
Before creating the project, I using SQLmetal to generate the Nosthwind Entity Classes "Northwind.cs"
c:sqlmetal /namespace:nwind /code:Northwind.cs /pluralize /functions /sprocs /views "C:CongChinhNorthwindNorthwind.mdf"
and then, I add the Northwind.cs in my project.
CODE 1 using System;
2
3 using System.Linq;
4
5 using System.Text;
6
7 using nwind;
8
9
10
11 namespace Ex
12
13 {
14
15 class Program
16
17 {
18
19 static void Main(string[] args)
20
21 {
22
23 Northwind db = new Northwind(@"Data Source=.SQLEXPRESS;Initial Catalog=Northwind");
24
25 var cust =
26
27 from c in db.Customers
28
29 where c.City == "Rio de Janeiro"
30
31 select c;
32
33 foreach (var kh in cust) //---> SQLException was unhandled
34
35 Console.WriteLine("{0}", kh.CompanyName);
36
37 Console.ReadLine();
38
39 }
40
41 }
42
43 }
But when I run the program. It throws a SQLExecption : Login failed for user ''. The user is not associated with a trusted SQL Server connection.I'm using SQLExpress and server name : CONGCHINHSQLEXPRESS and Windows Authentication
I don't know how to solve this problem. Somebody help me,please !
View 1 Replies
View Related
Aug 2, 2006
Dear all,
I am a newbies in SQL server. One of my client what to using Clustering and SAN Feature to make his SQL server have high avaliabilty. However, since they want to utilize the SQL server, they would like to active/active cluster with network load balancing. However, questions comes:
1. Can I mount a same database in a Active/Active Cluster environment?
2. If I can do that, how will the SQL server handle those instance/how can I set it up?
3. When there have two users using difference node SQL server to insert data, what will happen?
Please help.
Thanks and Regards
Jacky
View 6 Replies
View Related
Mar 5, 2008
Hi
I am having some teething problems while installing SQL on a 3 node cluster. Within the Cluster configuration I have 3 Cluster Groups with each of them having their associated disk resources. All these disk resources physically exist on a SAN.
The actual cluster is running absolutely fine and I can access all the disks from their respective owner node. The problem only starts when I start installing SQL Server 2005 on this cluster. I specify the Cluster group from the Cluster Group Selection and choose the desired partition and then the error message pops up
"There is not enough diskspace on the destination disk for the current SQL Server data files. To proceed, free up disk space to make room for data files, or install the data files to a different drive"
But the disk I am trying to install it on is 264Gb and none of it is used. I have also tried to change it to a different disk within the same Cluster group but to no avail. I have even tried to install it in a different cluster group all together but I get the same error message.
I have googled around havent found anything so far. The disks have got full permissions for the account I am installing SQL with.
Any help will be much appreciated.
Regards
Adnan
View 5 Replies
View Related
Nov 30, 2006
Hi folks,
We are going thru the process of scoping an active/active cluster at one site.
I was wondering whether there will be any issues with mirroring (DB by DB) off the cluster into non clustered server at an alternate DRP site.
Regards, Brian
Sutherland
View 1 Replies
View Related
Mar 12, 2008
Hi all, My aim to install active/active 2 node SQL 2005 cluster. I have installed sql cluster on one mode, which automatically installed on node 2.
it works great. However When i tried to install second virtual server, it is not allowing me to install.
it says already install, can anyone tell me how to install active active cluster
View 1 Replies
View Related
Feb 24, 2008
following is the code which i am trying to use
it throws an error and dosent work.
error details:
Unable to cast object of type 'System.Data.Linq.DataQuery`1[tbl_temp_bank]' to type 'tbl_temp_bank'.
source code(aspx.vb file)
Dim c As New temp_business_bankDataContextDim tag = From t In c.tbl_temp_banks Where t.TIN = Convert.ToInt32(tin.Text) Select t
c.tbl_temp_banks.DeleteOnSubmit(tag)
c.SubmitChanges()
please can some one help me with this.thanks
View 9 Replies
View Related
Jun 29, 2004
How do I install MSDTC in an active/active MSCS cluster environment?
If I run comclust.exe, I can only activate MSDTC on one of the nodes at a time.
I need DTC on both nodes.
(Opsys is W2K with SQL 2000)
//Mange :)
View 2 Replies
View Related
Mar 22, 2007
We run several SQL 2000 SP4 instances on IA64 active/active cluster. The OS we run with is Windows Server 2003 SP1. We have different network cards : 2 network cards teamed for production purposes in domain X and 1 network card dedicated for problem solving in domain Y.
First we configured the cluster with only the 2 teamed network cards for production purposes in domain X. Later we introduced the second network card for problem solving in domain Y.
Everything looks fine. The (virtual) SQL instance listens on two different IP adresses on TCP port 1034. If we try to make connection via isql, EM or Query analyzer than we can directly contact the SQL instance from a workstation/server within domain X but this doesn't work form a workstation/server within domain Y. However if we use the specific TCP port in the connection in domain Y the connection is setup. We wish however not to use explicit TCP ports in setting up connections.
Has anyone experienced the same problem before or has anyone an idea how to solve the problem?
View 1 Replies
View Related
Jun 8, 2007
I have a 2005 active/active cluster and want to apply SQL server 2005 SP2 to both node.
I know that for active/passive , the sp can simple be installed on the active node(instance) and everything will be replicated to the other node.
bear in mind what I have SSIS and SSAS and SSRS running on the active/active cluster.
what is the rigth method for applying the SP to activeactive cluster?
Thanks
View 1 Replies
View Related
Feb 13, 2007
I have a report problem. I'm using a parameter to dynamically control visibility for two tables. If the parameter is set to one value, I want to switch one of the tables to invisible, if the parameter is set to another, I want the other table to be invisible instead.
This all works fine in Visual Studio. When I publish it to my report server, the visibility controls no longer function and both tables always display. Any ideas here?
I'm running 2005, SP2 CTP.
View 4 Replies
View Related
Mar 5, 2001
Hi
While configuring an active / active cluster, do I need to run the SQL setup on both nodes?
The SQL2K setup installs binaries on localdisks of both nodes - hence the question.
thanks
Liju
View 3 Replies
View Related
Feb 22, 2000
I have setup an active/active clustering environment for SQL Server, however it is 2 seperate virtual servers. How can I set them up to exist as one virtual server containing both active installations? Can this be done? I have two compaq 8500 w/8 processors each. I need to be able to cluster these configurations to take advantage of all 16 processors in one virtual SQL Server. Can it be done?
If you can answer these questions, you will have my undying gratitude.
Thanks in advance.
View 1 Replies
View Related
Sep 21, 2000
Hi
I am running some tests on SQL7 in an active/active cluster and have a couple of queries
1. When I create an ODBC DSN, why is the "Use the Failover SQL Server if the primary SQL Server" checkbox disabled
2. To test, I was running SQL queries from Access over the DSN created. When the Primary Server went down, I had to reconnect to re run the query - Is this normal?
3. Can someone point me to any documentation on the above scenario that would shed some more light?
Thanks
Liju
View 5 Replies
View Related
Oct 26, 1999
I currently have a two node HP hardware active/active cluster server. Running windows NT 4.0 Enterprise and dSQL server 6.5 sp 3. I want to upgrade the cluster to SQL 7. I would like to know if anyone ran into any problems or has sucessfully attempted this.
Also I read a few months ago about a gottcha involving NT sp4 and SQL sp5a that would prevent a node from failing over. Has this been corrected and does it affect SQL 7.
thanks
View 1 Replies
View Related
Sep 27, 2002
Hi
Is there anyone who knows where I can get some information about
installing an ACTIVE/ACTIVE SQL 2000 Cluster server (MSCS).
I have no problem setting up an active/passive failover cluster.
Where can I get more information? Do I need two instances? Two databases?
What's the difference between active/active and active/passive?
Thanks!
View 2 Replies
View Related
May 18, 2008
Hi,
I've just setup an 2 node active/active sql cluster (my first). Both servers have exactly the same specification, 16GB of RAM each and SAN attached. My question is, how do I configure the min and max memory for each sql instance. I've read some where that I need to follow the 20-40-40 rule as, 20% for the OS, 40% for the active sql instance on the node and the other 40% is for the other sql instance if it fails over. Are there any other gotcha that I need to be aware of? Can someone share some light with me in regards to this? Thanks
Ken
View 4 Replies
View Related
Jul 3, 2007
We have an active/active node setup with SQL 2005. Does anyone have any samples of VBS I could use to see what node is actually taking requests at a certain time? What I want to determine is what the actual active node is.
Thanks.
View 1 Replies
View Related
May 18, 2006
I want to host 2 seperate SQL databases and wanted to know if it would be possible to run this in an active active cluster config which each database running on a different server.
The clustering would be there in the event of failure of one of the servers but for normal operation the two sql instances would be completely seperate.
Is this configuration possible and would this give the best performance and resiliance from a 2 server setup.
What do you think?
View 4 Replies
View Related
