Maintaining Atomicity

Apr 5, 2004

Hello Friends,
Iam new to this sql server arena. I have implemented a procedure which does a series of insert and update statements and all of this statements must be implemented all at once or none. But if I got error in some statements , the rest of the statements are been executed. Please suggest me a way or code snippet to achieve atomicity in a sqlserver procedure.

regards,
Ch.Praveen Kumar.

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Stored Procedures, 'GO', And Transactions/atomicity

Oct 20, 2006

I have been having a bit of trouble creating a sql schema creation script (using sql server 2005) with generic stored procedures. I am generating the script from an xslt transform, so it is all in one document. The intent is that either everything works (schema creation, tables, constraints, procedures, and triggers) or the entire thing will be rolled back.

The problem I am having is that I can not find a way to put more than one stored procedure inside of a transaction statement, much less having all of the create statements needed within the same transaction. As far as I can tell the GO statement is needed between stored procs, but this statement appears to commit the preceding create <object> statement - breaking my atomic transaction.

Does anyone know a way around this or a way to put multiple procedures/triggers in the same transaction?

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hi ,
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can any one suggest me how can i achieve that.
should i use triggers and save the changes in another table ???
waiting for your suggestion??
thank you

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Jan 29, 2008

Scenario:
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Goal:
Now, with all that background and with 2005, I'd like to review this concept and remove this implementation if possible, or at least remove the close association of maintaining the statistics from the business jobs. In 2005, are there better ways to monitor and maintain statistics at more of an administrative (but automated) way?

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Feb 27, 2007

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May 24, 2006

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hi all,
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but if i will create one table for all then what will happend.
please tell me what to do and why?
asap please............
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Jul 20, 2005

Hello,I am fairly new at stored procedures. I have created some that willgo through a table and return a start date and an end date that isdependent upon the fiscal period you want, but I then need to usethose dates in another stored procedure to retrieve the information Ineed. My stored procedure looks like this.================================================== ====================CREATE PROCEDURE dbo.R920ExtTotal@MthsBack Decimal OUTPUTASDECLARE @sSQL AS NVARCHAR(255), @StartDate as SMALLDATETIME, @EndDateas SMALLDATETIMEExec @StartDate = GetMthStart @MthsBackExec @EndDate = GetMthEnd @MthsBackSET @sSQL = 'Select count(extension) as Total From r920f00 Where([date] BETWEEN "' +CONVERT(nvarchar, @StartDate) +'" and "' +CONVERT(nvarchar, @EndDate) +'")'Select @sSQLEXEC (@sSQL)ReturnGO================================================== ===============The problem is my variables @StartDate and @EndDate do not retaintheir values after the EXEC statement and revert to 01/01/1900. Howcan I get around this problem?Thanks!!!!Chip

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Jul 20, 2005

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Oct 29, 2007

Hi,What is the preferred way to maintain SQL tables on a remote host?I am a newbie to building ASP.NET websites on a remote host.A stumbling point has been the maintenance of SQL tables on the remote host.I understand about doing complete backup and restores,but I am seeking a quicker way to maintain individual files.I would like to click and edit but instead am going through the following 30+ clicks.Is there a easier way?Thanks.
For example, what I do now to build a new data table for a hosted website.1) Design table 1a) Name 1b) Fields & Types
2) SQL Server Management Studio Express (assuming existing database) 2a) Select Database & Tables 2b) Add new table 2c) Add fields,  Key must be INT for ACCESS 2d) Save as (Name_Table)
3) MS Access  (requires ODBC to be setup first through the Windows control panel) 3a) Tables / New / Link / ODBC /Machine_Data_Source 3b) Pick table 3c) Edit data, as needed
4) To transfer data, first:Select the database in the VWD solution explorer, then right-click and select the new "Publish to Provider" 4a) Database Publishing Wizard   4b) Choose table to script a backup from 4c) Build script & Copy
5) Start Ipswitch FTP ( this step can be rplaced by 6e below) 5a) locate folder & sql script file and choose destination directory 5b) Transfer file
6) Login to remote host host (1and1) 6a) MS SQL Administration  6b) Admin (MyLittleTools Admin) 6c) Tools 6d) Quey Analyser 6e) Paste script (from step 4) 6f) Submit (Run) 6g) Verify table built
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/****** Object:  Table [dbo].[Name_Table]    Script Date: 10/28/2007 18:03:58 ******/IF  EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[Name_Table]') AND type in (N'U'))DROP TABLE [dbo].[Name_Table]GO/****** Object:  Table [dbo].[Name_Table]    Script Date: 10/28/2007 18:03:58 ******/SET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOIF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[Name_Table]') AND type in (N'U'))BEGINCREATE TABLE [dbo].[Name_Table]( [ID] [int] NOT NULL, [Name] [nvarchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL, [Address] [nvarchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL, [City] [nvarchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL, [State] [nvarchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL, [Zip] [nchar](10) COLLATE SQL_Latin1_General_CP1_CI_AS NULL, [Acsz] [nvarchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL, [Phone] [nvarchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL, [Fax] [nvarchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL, CONSTRAINT [PK_Name_Table_1] PRIMARY KEY CLUSTERED ( [ID] ASC)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  =
ON))ENDGOINSERT [dbo].[Name_Table] ([ID], [Name], [Address], [City], [State], [Zip], [Acsz], [Phone], [Fax]) VALUES (1, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL)INSERT [dbo].[Name_Table] ([ID], [Name], [Address], [City], [State], [Zip], [Acsz], [Phone], [Fax]) VALUES (2, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL)INSERT [dbo].[Name_Table] ([ID], [Name], [Address], [City], [State], [Zip], [Acsz], [Phone], [Fax]) VALUES (3, N'Third
name', NULL, NULL, NULL, NULL, NULL, NULL, NULL)
 

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Maintaining SQL Server At Customer Sites

Apr 18, 2003

I am wondering how people maintain their SQL Servers which run at several customers sites and disk space is getting smaller and smaller? I want to say that we have tables in SQL dbs which hold a lot of date consisting of statistics, errors, logs etc.
They grow and grow and existing data is not needed anymore as soon as the data get older than let's say for one year. How do you overcome the problem reducing the tables but not charging the system too much as the major application also runs on the same server?

Thanks for any input

mipo

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Maintaining A Log For The Users Connected To Sql Server Db.

Dec 8, 2005

Hi !

I need to maintain a record such as how many time any user (e.g, sa) connects to the sql server. Means whenever any person is connecting to the database through application or directly, then i need to know that through which sql user(e.g sa), any body connected.

Regards,
Shabber Abbas Rizvi.

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Suggestions On Maintaining Audit Fields

Apr 14, 2008

Currently all of our tables in several databases have the following columns:

user_added (this is nvarchar)
host_added (this is nvarchar)
date_added (this is datetime)
user_modified (this is nvarchar)
host_modified (this is nvarchar)
date_modified (this is datetime)

Right now our policy is that (a) the _added columns use defaults to populate the data on INSERTS and triggers are generated to update the _modified fields upon an UPDATE of the table.

Our practice has been (a) to manually create these fields in our scripts as we create new tables in our system and (b) create triggers to perform the update anytime we create a new table.

This practice has been fine until recently where we have been outsourcing some of our development and not all of our standards have been adhered to, including this one. I'd like to look at alternatives for somehow maintaining these concepts outside of our development workflows.

The first thing I'd like to inquire about is regarding options to eliminate having developers include these columns in the CREATE TABLE statements. Is it possible in SQL Server 2005 to capture when an CREATE TABLE statement is executed and override/append to the initial CREATE TABLE statement?

The second thing I'd like to inquire about is regarding options to eliminate having developers write the initial trigger that maintains the _modified fields. I guess if there are options to capture when a CREATE TABLE statement is executed, we could possibly generate a CREATE TRIGGER statement against that object as well?

Another idea I would like thoughts on are using some sort of 'table inheritence' to store this information for all objects in our database? This idea come up when I saw this article - http://www.sqlteam.com/article/implementing-table-inheritance-in-sql-server. Do you think the situation I explained here would fall into this concept?

I'm also open to any other thoughts and/suggestions.

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Apr 4, 2007

Hello All!

I have a asp.net website with SQL 2005 DB .
DB size of 1.5GB with ~10 tables in it. The largest table has 200k of records in it (website users table), with 500 new records every day.

I've setup this database 4 months ago and didn't touch it since then.
I really have no knowledge what SQL needs in terms of index maintenances / hard drive maintenances.

Lately , the website searches started to be really slow , and I started to get timeout error and deadlock errors.
I have a few indexes for each table based on the recommendation MS-SQL Database tuning advisor gave me.

Some of the index's are :
Page fullness : 99%
Total Fragmentation: 24%

Other are :
Page fullness : 65%
Total Fragmentation: 99%


I guess I need to start maintaining the DB , defragmenting index or hard-drive?
Can anyone help me and provide me with guide/information on what is needed to be done in order to keep SQL running fast and happily?
or a guide on defragmenting index's and how ofen do i need to defrag?

Thanks,
Shar

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Aug 7, 2007

If you have a "Orders" table that is being sync'd to subscribers that are ocassionaly offline, and the subscribers add rows to their local Orders table. When they go online to sync with the published "Orders" table, how do you handle keeping the "OrderId" field unique?

Example:
Both salespeople sync the following data down:
OrderId Desc
1 Order 1
2 Test Order



Both salespeople go offline and add orders
Salesperson 1 adds:
OrderId Desc
3 Joes Order

Salesperson 2 adds:
OrderId Desc
3 Kathys Order


Now, when they go back online, they both will sync their orders up to the main database and they both have the OrderId of 3.

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Maintaining 2000 Maintenance Plans Using SQL 2005

May 4, 2007

Calling all those that use Maintenance Plans.

There are some perculiar goings on happening on my servers. Plans across servers have been doing funny things like dumping back ups in different folders, some jobs have been hanging, so on and so forth.

And I think it's occuring after modifying SQL Server 2000 plans with SSMS. It's so intermitent, it's hard to put my finger on exactly when it's happening. It may have not even been reported yet. Fixing the anomolies are achieved by recreating the jobs (a matter of unticking and ticking the boxes in the Maintenance Plans).

In SQL 2000, if you create more than 1 schedule on a job that was itself created using a maintenance plan, SQL Server returns a message along the lines of "Dude, do this and weird things might happen". The message doesn't say what exactly, just that it can no longer guarentee the integrity of the plan. And indeed, weird things does happen, I tested it once.

I'm guessing this is a similar problem, but has not yet been pinned down. Has anyone come across this when using SSMS to maintain 2000 plans.

At this stage, I would like to point out that this is not a slagging off Maintenance Plans thread... I'm looking in the direction of anyone who's name starts with the letter Kristen or Tara



Drew

"It's Saturday night; I've got no date, a two litre bottle of Shasta, and my all-Rush mix tape... LET'S ROCK."

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May 28, 2007

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Any ideas on how to retain my custom colors when exporting to Excel?

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SQL Newbie - Maintaining An Off-site Database Copy

May 24, 2007

Hi,



I am very new to SQL Server and am just starting to look into replication as a possible solution to a problem I have. I have a local database which will be running on either MSDE or SQL Express 2005. I have a database on a webserver running SQL Server 2005 Standard which I wish to keep as an exact copy of the MSDE/Express one. If data is changed in the local db then I want the webserver db to be updated with this data, preferably as the change occurs, but it could be on an hourly schedule if required.



If data in the webserver db is altered then I do not wish for it to update the local db, but I would like it to be assumed that the change is erroneous and reset the item to whatever exists in the local db. In other words, should a table be erroneously dropped or something from the webserver db then the table would be recreated when it syncs with the local db (rather than propogating the change back to the local db and thus losing local data).



Basically I want the web db to be an exact mirror of the local db as often as possible. Given that the webserver is running SQL Server 2005 Standard and the local machine will be running either MSDE or SQL EXPRESS, is this achievable and what would be the best way of achieving it? Should I use merge replication or database mirroring? I have succeeded in getting 1-directional merge replication working by setting the webserver up as a publisher and distributor and setting up a push merge subscription on the local machine with an ExchangeType of 1. However, this won't correct the data in the web db if it is compromised until it is altered locally.



It crossed my mind that I could write a small application to utilise tablediff to compare each table in the DBs and get it to correct the web db if required on a regular basis. Would this be a silly approach?



I would appreciate expert advice!



Max

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Mar 24, 2008

What are the basic processes for maintaining an SQL SERVER 2005 Database?
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Problem In Maintaining Data Precision During Import From Flat Files.

Nov 19, 2007



In my scenario I have about a dozen of flat files (Text files),that I have to import in SQL Server 2005.
I am using Flat File connection manager to carry out tha task.Flat files contains data generated from oracle.
When I import data from these text files into SQL ,the main problem lies in converting number(p,s) data type column of Oracle(In text file) to numeric(p,s) data type of sql server 2005.

Number(p,s) data type looses all it's digits after decimal to zero during import process.
For example

1.2434234390 (from text file,number(p,s) type of oracle) converts to 12.0000000000 (numeric(p,s)) of sql server 2005.

Is this this any workaround to this problem.I urgently need help.



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I used the "Default to a generated Value" action, then selected the Code attrib. --Saved.

Then back to the Entity, I applied business rules. But nothing seemed to have happened. As there was no change in codes.

There are no validation errors either.

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Nov 13, 2006

I am having great difficulty with cascading deletes, delete triggers and referential integrity.

The database is in First Normal Form.

I have some tables that are child tables with two foreign keyes to two different parent tables, for example:

Table A
/
Table B Table C
/
Table D

So if I try to turn on cascading deletes for A/B, A/C, B/D and C/D relationships, I get an error that I cannot have cascading delete because it would create multiple cascade paths. I do understand why this is happening. If I delete a row in Table A, I want it to delete child rows in Table B and table C, and then child rows in table D as well. But if I delete a row in Table C, I want it to delete child rows in Table D, and if I delete a row in Table B, I want it to also delete child rows in Table D.

SQL sees this as cyclical, because if I delete a row in table A, both table B and table C would try to delete their child rows in table D.

Ok, so I thought, no biggie, I'll just use delete triggers. So I created delete triggers that will delete child rows in table B and table C when deleting a row in table A. Then I created triggers in both Table B and Table C that would delete child rows in Table D.

When I try to delete a row in table A, B or C, I get the error "Delete Statement Conflicted with COLUMN REFERENCE". This does not make sense to me, can anyone explain? I have a trigger in place that should be deleting the child rows before it attempts to delete the parent row...isn't that the whole point of delete triggers?????

This is an example of my delete trigger:

CREATE TRIGGER [DeleteA] ON A
FOR DELETE
AS
Delete from B where MeetingID = ID;
Delete from C where MeetingID = ID;

And then Table B and C both have delete triggers to delete child rows in table D. But it never gets to that point, none of the triggers execute because the above error happens first.

So if I then go into the relationships, and deselect the option for "Enforce relationship for INSERTs and UPDATEs" these triggers all work just fine. Only problem is that now I have no referential integrity and I can simply create unrestrained child rows that do not reference actual foreign keys in the parent table.

So the question is, how do I maintain referential integrity and also have the database delete child rows, keeping in mind that the cascading deletes will not work because of the multiple cascade paths (which are certainly required).

Hope this makes sense...
Thanks,
Josh


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