Checking Server Availability When Using Dynamic Server/DB Names
Apr 15, 2008
I am building an SSIS package that is hitting about 50 remote servers. I have a for each loop container that i am using to build the list of servers to run.
The problem is...sometimes networks go down, sometimes connections time out and this causes my entire package to fail. I inserted a task that will run select @@ServerName on the remote server inside the loop. My thought was, if this returns an error I could ignore it and move on to the next server in the list and log somewhere that server x threw an error. Logging is easy, the problem is, how do I then tell it to move on to the next server in the loop?
If anyone has any suggestions on how better to do this, I am open for alternatives...
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Mar 9, 2015
I have query which is used to dynamically insert value but not working. We are trying to get all table names and insert dynamically to all tables by looping through table names.
declare @a varchar(max),@i int;
declare @table table(rno int, name varchar(max))
declare @b varchar(max)
insert into @table
select row_number() over( order by table_name) rno, table_name from INFORMATION_SCHEMA.tables
declare @tblname varchar(max)
[Code] .....
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May 22, 2007
i'm not fluent with sql and i have a question to ask..
if i want to check whether a product is available between two dates, how can i do so? for example, i want to check whether it's available between 5/23/2007 to 5/25/2007..
thanks
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Mar 4, 2008
hii all,can any one help me to get this information.
i am using sql server 2000 and i want to know:
1- all names of servers
2- all database names (catalogs) at specific server and only which the user created .
3- user name and password for each server.
thanks.
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Nov 25, 2014
I want two write a small script to determine which is the currently active (primary) server in the AG.
Right now, I see that using SELECT * FROM SYS.dm_hadr_availability_replica_states I can determine the role. However, when the server goes down and switches to the secondary node, I don't believe that the role changes (or does it?). How do I determine which is the active node?
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Jan 31, 2008
I'm going to be setting up DB mirroring between two SQL Server 2005 boxes. Since these are on two different servers, can the instance names be the same? Is there any reason NOT to do so if the mirror server is going to be used exclusively for DB mirroring?
For example: if the my primary DB is located on SERVER1INSTANCE1, can the mirror be SERVER2INSTANCE1 or do the instance names have to be different even though they're on different boxes.
Thanks!
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Aug 3, 2006
Hello there. I'm trying to populate a drop down box with a list of all available instances of SQL server (express or not) available on a network. To list all instances I'm using EnumAvailableServers() in SmoApplication.
The issue is that the Instance column in the returned data table is always empty, and both the Name and the Server columns contain the same string -- the name of the computer the SQL server is installed. Locally I have SSE installed, the instance name is <computer_name>SQLEXPRESS, however, using Smo I can't seem to get to the either full instance name or just the instance name. I can't assume SQLEXPRESS, since there may be more than one installed.
Alternately I used EnumRegisteredServers() in SmoApplication.SqlServerRegistrations and that, while returning instance information (can be retrieved from the RegisteredServer in the returned collection), doesn't always return the remote SQL servers in the list.
Any idea how can this be done? Maybe I'm going at it the wrong way, maybe there's another class / method I need to use to retrieve all instances?
Thank you
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Jan 20, 2006
I am in the process of setting up server replication using the Central Publisher Model. We are doing this for application availability. The application is a .NET app and this application uses the SQL Server name in the connection string. As far as I know we can€™t have two severs on the same domain with the same name. So if our primary server (server A) goes down and that server name is in the connection string how does the application get redirected to our backup server (server B). Thanks for the help.
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Jan 1, 2008
Hello,I'm still extremely novice to SQL and I've tried googling how to produce this result but I've been encountering a lot dynamic sql commands which isn't exactly what I want. If this is an ignorant question I do apologize but heres my scenario: I have a table with columns of the day, for instance: Monday_hasData (bit)Monday_DataAnd what I want to do is essentially pass in "Monday" as a parameter and rather than doing an If statement on each row, I would like to just like to do something like assign @dayCheck + "_hasData" to a variable and then use @dayCheck as part of my query. Is this possible or am I going to have to have 7 cases? Thank you for any input,Chance
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Jun 10, 2004
Hi is possible to create dynamic column name
example
Declare
@StartDate as dateTime
Select @StartDate = '2004-06-05'
select
SUM(Case When table1_date BETWEEN dateadd(day,-6,@StartDate) and @StartDate then 1 else 0 end)AS [dateadd(day,-6,@StartDate)],
SUM(Case When table1_date BETWEEN dateadd(day,-13,@StartDate) and dateadd(day,-7,@StartDate) then 1 else 0 end)AS [dateadd(day,-13,@StartDate)]
from
table1
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Jan 19, 2005
thanx for the help in advance,
i have a table with Monday, Tuesday, Wednesday. .... Sunday
i get the weekday by
select @stat = datename(dw, getdate()) which in this case is Wednesday
but when i do something like
select top 2 * from myTable
where 'myTable.'+@stat = 1
which is as same as
select top 2 * from myTable
where myTable.wednesday = 1
i receive a syntax error. how can i dynamically select myTable.Wednesday ?
i also tried using
select top 2 * from Intercon
where '@stat' = '1'
but then this doesn't return anything where it should.
any help?
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Jun 5, 2008
Hi all,
I have been attempting to construct some dynamic SQL using a table name as a parameter, and call it using sp_executesql, in SQL Server 2005.
According to all of the searches and articles I have read today, the following should work:
DECLARE @rownumINT
DECLARE @tabNamNVARCHAR(100)
DECLARE @SQLStringNVARCHAR(500)
DECLARE @ParmDefinition NVARCHAR(500)
SET @rownum = 35
SET @tabNam = 'AdminScriptHistory'
SELECT @SQLString = N'SELECT * FROM @table where executionorder=@row'
SET @ParmDefinition = N'@table VARCHAR(100), @row INT'
EXEC sp_executesql @SQLString, @ParmDefinition, @tabNam,@rownum
However, it fails with:
Msg 1087, Level 15, State 2, Line 1
Must declare the table variable "@table".
Anybody know why?
Cheers
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Aug 28, 2007
Got my first real job to do in SSIS and it's not really much fun. Here goes. I have excel files from various vendors, none of which are in the same format. Now I'm less concerned with the names, I have those in variables so that's not a big deal. My issue is around the column names. Let's say we have file a, b and c. In file a the first name field is called [first name], in file b it's first_name and in file c it's firstname. What I want to do is create 1 package that can handle these files regardless of how first name is spelled. I was thinking I could open the file and somehow search for a column name that contained the word "first%" and then map the column name to a variable. I'm sort of stuck though on how to actually do that. Help. And please don't tell me to tell the vendors to standardize. That's the end goal but it's like herding cats.
Mike
"oh, that monkey is going to pay"
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Aug 9, 2007
Hi guys 'n gals,
I am trying to achieve something a bit complex (or at least appears to be for me).
I have the following table structure:
UID, GroupID, ColumnName, ColumnValue
here is some example data:
UID, GroupId, ColumnName, ColumnValue
1, 1, MAC Address, 8a7sd87sad
2, 1, IP Address, 192.168.1.100
3, 1, Name, John
4, 2, MAC Address, 09a8sd098as
5, 2, Name, Steven
and here is what I would like the example to come out like:
GroupID, MAC Address, IP Address, Name
1, 8a7sd87sad, 192.168.1.100, John
2, 09a8sd098as, NULL, Steven
It needs to be completely dynamic though, as a new column name could be entered to the source table at any time...
I have tried Dynamic SQL and JOINs, but can only seem to get it to work correctly. I was starting to consider doing a loop similar to this:
Code Snippet
DECLARE @ColumnName varchar(128)
DECLARE @Sql varchar(255)
SELECT @ColumnName = [ColumnName] FROM tblSourceData
SELECT @Sql = 'SELECT [GroupId], [ColumnValue] AS ['+@ColumnName+'] FROM tblSourceData'
EXEC (@Sql)
Could somebody please point me in the right direction? I've heard a bit about Pivot tables in my search for this solution, is that perhaps the route I need to go?
Regards,
Justin
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Jul 11, 2007
Hi Guys,
I'm in need of your help. Before running my dataflow task i want to check sql server availability on the network.
If not found then i want to stop the processing of the package.
My last post also has the same question but it wasn't answered yet so......... just check the 2nd last post and the last post:
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1834575&SiteID=1
Is there are way to check from SSIS package?
Thank you
Gemma
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Nov 18, 2006
Hello everyone,
I have an ASP application mainly connected to one SQL database that works great but now I am trying to add some functionality that requires to connect to another remote SQL server. Till now all is fine except that the remote SQL server is not always online and of course when this happens my ASP application stops with the following error:
Error Type:
Microsoft OLE DB Provider for SQL Server (0x80004005)
[DBNETLIB][ConnectionOpen (Connect()).]Specified SQL server not found.
in my Global.asa I setup my session variables for DSN connections and in my pages I call my SQL connection as follow:
Set Conn = Server.CreateObject("ADODB.Connection")
Conn.Open Session("MySQL")
SQL = "my SQL statement here;"
Set RS = Conn.Execute(SQL)
Every time the page hits the Conn.Open line I get the error if the remote SQL is not online!!!
Is there a way I can check a sort of returned error code holding the connection status before getting to the Conn.Open line???
Any help would be greatly appreciated.
Thx in advance
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Jul 20, 2005
Hi,I am trying to create a stored procedures (SQL 7.0), to provide dataina crosstab format.(I'm using Crystal Reports 8.5, but the Crosstab capabilities areterrible, so I have to do as much as possible on the SQL side)I have a table [Occurrences] with the following fields:Year (int)Month (int)Occurs (int)Claims (int)I need a query to give me the following format:Acct_Month 2001 2002 2003Occurs Claims Occurs Claims Occurs ClaimsJanuary 120 180 132 196 110 140February 154 210 165 202 144 178March etc.......Catch! I need the Year field name to be the contents of the fieldYear in the Table (2001, 2002, 2003...). Not the usual Year_1, Year_2approach.I got the month name ok...Acct_Month = DATENAME(month, Convert(Varchar(2), Month) + '/01/'+Convert(Char(4),Year))Is it possible to do this easely, without the use of cursors?Any help would be much appreciated.Luis Pinto
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Jul 28, 2006
I am working with an ftp task which is using a file connection to send a file to a remote server. This file is going to have a dynamic name (e.g. "Orders for 2006-07-29.txt"). How can I dynamically specify the file path/name for the file connection? You can't specify a varaible through the ui.
I would imagine that you can do this through a script task but I'm not sure how to reference the connection object. any help would be greatly appreciated.
thanks,
Scott
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May 26, 2004
I've been asked to look into the possibility of using SQL Server in a high availability environment. We have a few web based applications that use SQL Server back end DBs. What we are looking into is whether we can use multiple instances (on multiple physical servers) of SQL Server using some type of clustering/load balancing. I haven't worked with SQL Replication before, so I'm not even sure where to start in exploring the possible avenues we can explore.
Can anyone push me in the right direction? Any info would be greatly appreciated!
Thanks,
Bill
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Apr 5, 2008
Hi
I would like to know, Is Logshipping is supported on SQL 2005 clustering?
Thanks in Advanceshan
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Oct 13, 2001
I have a quick question on SQL Server. Lets say I have table Order which has column names OrderId, CustomerName, OrderDate and NumberofItems. To select the OrderID values from the table I say
Select OrderId from Order.
But in the select if I want the column name to be variable how do I do it. I tried the following code through a stored procedure.
declare @order_id nvarchar(10)
select @order_id = 'OrderID'
SELECT @order_id from Order.
The code above gave me the string "OrderID" as many times as there were rows in the table but I could never get the actuall values in the OrderId column. Can you please send me some ideas or code where I can get values from the column names and at the same time change the column name dynamically.
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Jul 2, 2007
Hello all,
Im just wondering... is there any way to have dynamic table names, so that, say for instance, i have 4 stored procedures, that all do the same thing, just to four different tables. is there any way to have 1 stored procedure, and pass through the table name???
Adding the four statements into one statement is not an option, as i only need to execute one at a time..., not all four at once...
Cheers,
Justin
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May 17, 2004
Hi
I have developed an application in ASP/SQL server 7.
Ths system is single user. One of the tables is updated by usr actions( say Table A).
To make it multi user. I want to create table such as A_Username.
How can query be written for this. Also there are many stored procedures which will access this table. In these stored procedures i will send username as an input. Then the query in the stored procedure shd access the table as A_Username .
Such dynamic table name refrencing , how can it be done.. Is creating a string for the query and then executing it using sp_exec the only option?
pls suggest
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Aug 3, 2007
I am trying to do a PIVOT on a query result, but the column names created by the PIVOT function are dynamic.
For example (modified from the SQL Server 2005 Books Online documentation on the PIVOT operator) :
SELECT
Division,
[2] AS CurrentPeriod,
[1] AS PreviousPeriod
FROM
(
SELECT
Period,
Division,
Sales_Amount
FROM
Sales.SalesOrderHeader
WHERE
(
Period = @period
OR Period = @period - 1
)
) p
PIVOT
(
SUM (Sales_Amount)
FOR Period IN ( [2], [1] )
) AS pvt
Let's assume that any value 2 is selected for the @period parameter, and returns the sales by division for periods 2 and 1 (2 minus 1).
Division CurrentPeriod PreviousPeriodA 400 3000 B 400 100 C 470 300 D 800 2500 E 1000 1900
What if the value @period were to be changed, to say period 4 and it should returns the sales for periods 4 and 3 for example, is there a way I can change to code above to still perform the PIVOT while dynamically accepting the period values 4 and 3, applying it to the columns names in the first SELECT statement and the FOR ... IN clause in the PIVOT statement ?
Need a way to represent the following [2] and [1] column names dynamically depending on the value in the @period parameter.
[2] AS CurrentPeriod,
[1] AS PreviousPeriod
FOR Period IN ( [2], [1] )
I have tried to use the @period but it doesn't work.
Thanks in advance.
Kenny
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Jul 3, 2007
Folks,
I am running into an issue while trying to export data to a spreadsheet. I actually don't know how to do it... Considering I only know the column names by the time I execute my procedure, I can't use the Excel Destination to export data.
With DTSs I would create an ActiveX script to execute the procedure which loads the results into a temp table. After that I would select everything from this temp table and load the results into a record set, looping through this record set to create the destination spreadsheet with the dynamic column names.
When it comes to SSIS we are advised to write vb.net scripts instead of ActiveX... These ones do not have records set's but dataset's, which at first glance are only applicable to xml and not xls files (when I try to define a variable as a dataset in my vb.net code, I face a message saying: Missing reference required to assembly System.Xml...).
How I would create this spreadsheet using a vb.net code in SSIS packages? Please, help...
Thank you.
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Sep 3, 2004
Does anybody have any idea when SQL Server 2005 Express will go from Beta 2 to a full release please?
Thanks
Simon
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Jul 30, 2014
I have 2, 2 node clusters
PROD1(cluster 1) Clustered SQL instance1
PROD2(cluster 1)
DR 1 (cluster 2) Clustered SQL insatace 2
DR 2 (cluster 2)
I have set an availability group up from the PROD instance to the DR instance.How does the AG behave if a SQL instance fails at PROD? Does it try to fail over to Node 2 on Prod before going over to DR? or bring the Replica at DR online straight away? Can we only use Manual Failover of the AG in this scenario to make use of the High Availability of the Windows cluster?
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Apr 9, 2015
I would like to provide the names of columns in an insert statement from a schema table, so that when running through a number of Bus Rule checks I can reference the schema table and only maintain the columns in the schema table rather than maintain named columns in multiple insert statements. So my query for one check looks like below. I'm using dynamic sql to execute the insert statement. My question is, is there a better way or different way to do this without using dynamic sql? Ie, Is there a way that I can use the columns parameter like this instead?
Insert
('+@columns+',KickoutID) Values('+@columns+',1);
Dynamic code:
Declare @columns as nvarchar(max);
Declare @InvSQL as nvarchar(max);
SELECT @columns =
STUFF ((
SELECT ', [' + name + ']'
FROM syscolumns WHERE id = OBJECT_ID('dbo.table_pvt')
[Code] ....
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Sep 16, 2015
I don't know why this is so difficult. What I want to do is take a table name as a parameter to build a query and get an integer value from the result of the query. But from all of the research I have been doing, Dynamic SQL is bad in SQL server because of SQL Injections. But my users are not going to be supplying the table names.
Things I have learned:
 - SQL Functions cannot use Exec to execute query strings.
 - SQL Functions can return a concatenated string that could be used by a stored procedure to Exec the query string.
So how can I write a stored procedure that will
Â
1. take a parameter
2. Pass the parameter to a function that will return a string
3. Execute that string as SQL
4. Get a return value from that SQL statement
5. Then finally, from a View, how can I pass a parameter to the stored procedure and get the returned value from the stored procedure to be used as a field in the View?
Numbers 3, 4, and 5 are where I am really stuck. I guess I don't know the proper syntax and limitations of SQL Server.
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Feb 20, 2007
Hi
Will seem to be a basic question.
How can I check the number of CPU's used by a SQL Server.
Thanks
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Apr 2, 2015
The MSDN doc makes it sound like after a failover of the primary, the CDC data won't "keep working" on the secondary unless you "To allow the logreader to proceed further and still have disaster recovery capacity, remove the original primary replica from the availability group using ALTER AVAILABITY GROUP <group_name> REMOVE REPLICA. Then add a new secondary replica to the availability group."
We have a few CDC tracked tables that we use and the general idea of AlwaysOn I thought was to minimize all the overhead and let things "just work" so your apps just connect and the listener re-routes everything where it needs to go.
It looks like to get this working properly an automated job /trigger would have to wait for a failover event and then kick off tasks to remove and re-add the replica and perhaps start up the CDC job on the secondary?
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Jul 3, 2015
We have 4 servers : Server 1 , Server 2 and HA , DR servers.
I designed 2 Plans to get HA support for my databases .
Which of them are better , And is there any problem in my design ?
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Aug 18, 2015
I am trying to create a job that runs against my High Availability listener server.
It is a fairly simple SQL statement in the job - execute tsql.
When I try and run the job I get the error:
Executed as user: NT SERVICESQLAgent$SQL2014A. The target database ('BB_Prod') is in an availability group and is currently accessible for connections when the application intent is set to read only. For more information about application intent, see SQL Server Books Online. [SQLSTATE 42000] (Error 978). The step failed.
I thought there was a way to run a select statement as a job against the listener? The tsql step is only a select.
Is there a way to pass in the application intent = readonly as part of my SQL statement?
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