transaction error - Database Discussion Boards

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Vuyiswa Maseko,

Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.

C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/

i have database of sql

in User table there is field which contain encrypted password

this database is using with an application. so i know the string using which these passwords are encrypt so please can any one help me how can i get that passwords.

Regrads

If it's properly done you can't get the unencrypted passwords from the database.

The normal procedure is that you encrypt the supplied password with the same algorithm as was used when storing it in the database, and then compare.

hi all
i have a .bak file created with a stored procedure which takes backup of a database. Now i want to restore that .bak file to the database can anybody help me with a stored procedure.
This .bak file is created with the help of

backup database databasename
to disk = "destination path"
with

thanks for ur replies in advance

Regards
Narendra Singh
(Jindal Tech Ventures)

i have this

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go


-- Restore a backed up database
-- Given: the filename and path where the backedup database file is located and the name of the database to restore it as
-- The entry will be restored and a row placed into oDirect.dbo.tbl_dbref - which keeps track of the databases
-- The users for the database must also be restored!
ALTER PROCEDURE [dbo].[sp_RestoreDatabase] 

	@dbname char(32), 				-- the database name to restore as
	@filename char(64), @path char(256)		-- the location of the backuped up database file	(on the SQL Server)

AS

set nocount on

declare @sql nvarchar(3000)

execute('sp_ClearDatabaseConnections ' + @dbname)

-- Restore the database
select @sql = 			' RESTORE DATABASE ' + ltrim(rtrim( @dbname )) + ' FROM DISK = ''' + ltrim(rtrim(@path)) + ltrim(rtrim( @filename )) + ''' ' 
select @sql = ltrim(rtrim(@sql)) + 	'    WITH '
select @sql = ltrim(rtrim(@sql)) + 	'    MOVE ''' + 'TNGoedit_Data' + ''' TO ''' + ltrim(rtrim(@path)) + ltrim(rtrim( @dbname )) + '.mdf' + ''' , '	-- logical file name to physical name
select @sql = ltrim(rtrim(@sql)) + 	'    MOVE ''' + 'TNGoedit_Log' + ''' TO ''' + ltrim(rtrim(@path)) + ltrim(rtrim( @dbname )) + '_log.ldf' + ''' '	-- logical file name to physical name
select @sql = ltrim(rtrim(@sql)) +  '    ,REPLACE,RECOVERY;'
--select @sql = ltrim(rtrim(@sql)) + 	'    MOVE ''' + ltrim(rtrim(@dbname)) + '_Data' + ''' TO ''' + ltrim(rtrim(@path)) + ltrim(rtrim( @dbname )) + '.mdf' + ''' , '	-- logical file name to physical name
--select @sql = ltrim(rtrim(@sql)) + 	'    MOVE ''' + ltrim(rtrim(@dbname)) + '_Log' + ''' TO ''' + ltrim(rtrim(@path)) + ltrim(rtrim( @dbname )) + '_log.ldf' + ''' '	-- logical file name to physical name
print @sql
execute ( @sql )

-- Was the command successful or was there a problem
if ( (select @@Error) = 0 ) begin
	-- Put an entry into oDirect.dbo.tbl_dbRef
	-- execute ( 'sp_DataSet_Save ''' + @xml + ''' ' ) 	

	-- TODO: restore the users

  select 'Restore Successful' [Result]
end
else begin
   select 'Restore Unsuccessful' [Result]
end

You can Simply change it to BAK file

Vuyiswa Maseko,

Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.

C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/

I want to build a trigger for updating a summary table in SQL Server.

I have a summary table with records listing all the individual tables in my database. When I add a new record to the individual tables I wish to for it to update the summary record for the latest data.

Example:

When adding a new record with the date, I want the date to be entered in my summary table as the last date entered for that table, the name of the table will be listed.

I could do this with a stored procedure, but I would rather this be automatic with a trigger.

Can anyone help me with this, thanks in advance.
Michael

modified on Monday, December 21, 2009 5:43 PM

This is a really dumb idea, doubling your transaction cost to support a summary table that you query how often. Putting in a trigger (triggers are evil, like cursors) for such a trivial, non essential operation is not good.

Create a view or a stored proc to get the information when and if you need it.

A trigger is exactly like a proc except it can reference the inserted/updated record it is called from. Read BOL for some examples.

Never underestimate the power of human stupidity
RAH

when i am executing the stored procedure by passing xml it is throwing transaction error

(1 row(s) affected)
Msg 266, Level 16, State 2, Procedure get_next_sequence, Line 0
Transaction count after EXECUTE indicates that a COMMIT or ROLLBACK TRANSACTION statement is missing. Previous count = 1, current count = 0.

(1 row(s) affected)

(1 row(s) affected)
Msg 3902, Level 16, State 1, Procedure sp_ProcessExcelSheet, Line 58
The COMMIT TRANSACTION request has no corresponding BEGIN TRANSACTION.

(1 row(s) affected)

stored procedure is here.

ALTER PROCEDURE [dbo].[sp_ProcessExcelSheet]
@file varchar (MAX)
AS
BEGIN
DECLARE @ComplaintDetail TABLE
(
ID int identity(1,1),
FName Varchar(50) not null,
Email Varchar(50),
Address Varchar(100) not null,
Disclose bit not null,
Complaint text not null,
Location varchar(50) not null,
Area varchar(50) not null,
PlaceFound varchar(50) not null,
ComplaintMode varchar(50) not null
)
DECLARE @idoc INT
EXEC sp_xml_preparedocument @idoc OUTPUT, @file
INSERT INTO @ComplaintDetail (FName,Email,Address,Disclose,Complaint,Location,Area,PlaceFound,ComplaintMode)
SELECT FName,Email,Address,Disclose,Complaint,Location,Area,PlaceFound,ComplaintMode
FROM OPENXML (@idoc, 'NewDataSet/Table',2)
WITH (FName Varchar(50),Email Varchar(50),Address Varchar(100),Disclose bit,Complaint text,
Location varchar(50),
Area varchar(50),
PlaceFound varchar(50),
ComplaintMode varchar(50))

declare @Count int
declare @IntCount int
set @IntCount=1
select @Count=count(*) from @ComplaintDetail
create table #Reff(FName varchar(50),Email varchar(50),ReffNo varchar(10) )
declare @FName Varchar(50)
declare @Email Varchar(50)
declare @Address Varchar(100)
declare @Disclose bit
declare @Complaint varchar(max)
declare @Location varchar(50)
declare @Area varchar(50)
declare @PlaceFound varchar(50)
declare @ComplaintMode varchar(50)
declare @seqno int
declare @sequentialNo varchar(10)
BEGIN TRAN T1
while(@IntCount<@Count+1)
begin
exec dbo.get_next_sequence @seqno output
set @sequentialNo= 'p'+convert(varchar(9),@seqno)
select @FName=FName,@Email=Email,@Address=Address,@Disclose=Disclose,@Complaint=Complaint,@Location=Location,@Area=Area,@PlaceFound=PlaceFound,@ComplaintMode=ComplaintMode from @ComplaintDetail where ID=@IntCount
Insert into HelpLine(ReferenceNo,FName,Email,Address,Disclose,Complaint,Location,Area,PlaceFound,ComplaintMode,ComplaintDate,ComplaintStatus)
values(@sequentialNo,@FName,@Email,@Address,@Disclose,@Complaint,@Location,@Area,@PlaceFound,@ComplaintMode,getdate(),'Open')
insert into #Reff values(@FName,@Email,@sequentialNo)
set @IntCount=@IntCount+1
end
IF @@ERROR = 0
COMMIT TRANSACTION T1
else
RollBack TRANSACTION T1
select * from #Reff
drop table #Reff
SET NOCOUNT ON;
END
when i changed the same same stored procedure it is throwing error as

Msg 2801, Level 16, State 1, Procedure sp_ProcessExcelSheet, Line 57
The definition of object 'sp_ProcessExcelSheet' has changed since it was compiled.

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go

ALTER PROCEDURE [dbo].[sp_ProcessExcelSheet]
@file varchar (MAX)
AS
BEGIN
DECLARE @ComplaintDetail TABLE
(
ID int identity(1,1),
FName Varchar(50) not null,
Email Varchar(50),
Address Varchar(100) not null,
Disclose bit not null,
Complaint text not null,
Location varchar(50) not null,
Area varchar(50) not null,
PlaceFound varchar(50) not null,
ComplaintMode varchar(50) not null
)
DECLARE @idoc INT
EXEC sp_xml_preparedocument @idoc OUTPUT, @file
INSERT INTO @ComplaintDetail (FName,Email,Address,Disclose,Complaint,Location,Area,PlaceFound,ComplaintMode)
SELECT FName,Email,Address,Disclose,Complaint,Location,Area,PlaceFound,ComplaintMode
FROM OPENXML (@idoc, 'NewDataSet/Table',2)
WITH (FName Varchar(50),Email Varchar(50),Address Varchar(100),Disclose bit,Complaint text,
Location varchar(50),
Area varchar(50),
PlaceFound varchar(50),
ComplaintMode varchar(50))

declare @Count int
declare @IntCount int
set @IntCount=1
select @Count=count(*) from @ComplaintDetail
create table #Reff(FName varchar(50),Email varchar(50),ReffNo varchar(10) )
declare @FName Varchar(50)
declare @Email Varchar(50)
declare @Address Varchar(100)
declare @Disclose bit
declare @Complaint varchar(max)
declare @Location varchar(50)
declare @Area varchar(50)
declare @PlaceFound varchar(50)
declare @ComplaintMode varchar(50)
declare @seqno int
declare @sequentialNo varchar(10)
BEGIN TRAN T1
SET IMPLICIT_TRANSACTIONS ON
begin
while(@IntCount<@Count+1)
begin
exec dbo.get_next_sequence @seqno output
set @sequentialNo= 'p'+convert(varchar(9),@seqno)
select @FName=FName,@Email=Email,@Address=Address,@Disclose=Disclose,@Complaint=Complaint,@Location=Location,@Area=Area,@PlaceFound=PlaceFound,@ComplaintMode=ComplaintMode from @ComplaintDetail where ID=@IntCount
Insert into HelpLine(ReferenceNo,FName,Email,Address,Disclose,Complaint,Location,Area,PlaceFound,ComplaintMode,ComplaintDate,ComplaintStatus)
values(@sequentialNo,@FName,@Email,@Address,@Disclose,@Complaint,@Location,@Area,@PlaceFound,@ComplaintMode,getdate(),'Open')
insert into #Reff values(@FName,@Email,@sequentialNo)
IF @@ERROR <> 0
RollBack TRANSACTION T1
set @IntCount=@IntCount+1
end
select * from #Reff
END
COMMIT TRANSACTION T1

drop table #Reff
SET NOCOUNT ON;
END

can any body help me regarding this

hi

You have a begin tran on the outside of a while loop and have a rollback on the inside with an unconditional commit on the outside. If a rollback occurs, the loop continues transaction-less and the commit will execute anyway = your error 3902. I would not wrap a transaction around a while loop if there was another way (there is!).

Never issue a commit or rollback without checking to see if there is actually a tran.

if @@trancount > 0
    rollback transaction

I would use a try-catch, without a doubt. Heres generally how a transaction could be handled:

begin try
begin transaction

--dml statement here

if @@trancount > 0
	commit transaction
end try

begin catch
	if @@trancount > 0
		rollback transaction
	print error_message() --(execute my error handler)
end catch

Some of the other wierd messages you are getting is because the proc failed to issue a commit or rollback at all leaving 'things' in an un-committed state. Until you have verified that the proc you are developing will always close the trans - issue either a commit or rollback after each 'test'.

Hi I am trying to create a stock scanner for my website. The user would choose and add certain criterias one by one, and a dynamic SQL statement would need to be created on the fly to retrieve the data.

Currently I am able to do this by appending pieces of SQL string after a long SQL string like the following:

Whenever "Add Criteria" button is pressed:

newQuery = "AND criteria > x"

userCriteria = userCriteria + newQuery

When "Retrieve Information" button is pressed:

Querystring = "Select * WHERE Date = date " & userCriteria

Is there a more efficient mechanism? If not that's also fine as it currently works well, but I just need some reassurance from experts. Smile | :)

Thanks!

modified on Monday, December 21, 2009 12:07 AM

If it works then you can only improve the structure of the query otherwise it is an exercise in string concatenation.

If the where clause is the only dynamic piece and the elements are known you can use something like

Where (IsNull(@AttrID, -1) = -1 OR AttrID = @AttrID)

where the default value is null or -1. Caveat, too many of these (about 6 IIRC) MAY affect the query performance I believe. I use it all the time and have had up to 8 elements in the where clause and it worked fine. The only benefit is it is not dynamic, not a huge issue!

Never underestimate the power of human stupidity
RAH

I have a stock time series data in which a numerical indicator fluctuates over time. If I want to find out for each stock that has its indicator now over 30, how many days since the last time this indicator is less than 30?

In other words, how many days since the last time the stock's indicator crosses above 30?

Just for your reference, currently I have the following:

SELECT ticker,
DATEDIFF(d,(SELECT MAX(DATE) FROM....),'12/21/2009')
WHERE Indicator > 30 AND Date = '12/21/2009'

I'd greatly appreciate any help! Smile | :)

If possible please provide a sample code.

By the way, thank you Ashfield for your help on a similar question last time, later I was able to understand the code you gave me and utilized it in different ways. This is a bit more difficult for me though.

modified on Monday, December 21, 2009 12:06 AM

How about something like

select ticker,datediff(day,t.date,(select max(date) from table t1 
where t1.ticker = t.ticker and t1.indicator < 30))
from table t

You may have to play about a bit, but it should be somewhere close

Bob
Ashfield Consultants Ltd
Proud to be a 2009 Code Project MVP

Thank you Ashfield, I'll test it out later and come back if I still have an issue.

i exported data in a table from an apache derby dbase to a sql script so i could run on MS SQL(Studio Express) to get the data in my table
but then there is this script for this table anytime i try running the script i get the following error msg.

before this the script would not even open the Studio when i try opening it and an err msg of "out of memmory would pop up"

please help me as to how i can solve this errror.
.

TITLE: Microsoft SQL Server Management Studio Express
------------------------------

Cannot execute script.

------------------------------
ADDITIONAL INFORMATION:

Exception of type 'System.OutOfMemoryException' was thrown. (mscorlib)

------------------------------

How big is that script? Have you considered loading and executing it piece by piece?

You can execute scripts from the commandline, without open the Management Studio. That's described here;
http://msdn.microsoft.com/en-us/library/ms165702.aspx

I are Troll Suspicious | :suss:

thanks for attending to my question.
the size is 65.2MB..
i am going to loading in pieces.. and post my response back...

I envisaged a low powered machine or something. I never imagined a 65mb script Dead | X|

what a monster. I don't think I have ever seen such a beast.

Never underestimate the power of human stupidity
RAH

it can't be low powered machine(4GB RAM, 2.8GHz Duo Core)
i finally exported it to csv and ported it excel. i had all data in there so just wrote
some sql statemet to import the data..into my tables. the whole dbase is in apache
derby and i need all of them in a platform i am comfortable with.

thanks

Hey,
In my project I’m going to use distributed databases. My target is creation of sales system so I will distribute for example order table. Mainly I use horizontal partition.
So my question is about solutions for .NET?Do you know any framework that supports heterogenic distributed databases?I want to define partition strategy in separate class(or alternatively in separate class). Then framework should allow me insert record and decide which database should be used.
It’s my first distributed database project so please share your experience. I have no idea how to start.

piotr.zielinski wrote:
I have no idea how to start.

Yup, that's how you start. Then you pick up a pen and start doing research[^]. Find an example of an application that you would like to build, make a list of definitions so that you know what's going on, try to divide the work into smaller pieces, etc.

You'll find that magic happens right after you have started Smile | :)

I are Troll Suspicious | :suss:

I know foundations- I'm looking for framework that allow me inject partition strategy at runtime.

The NHibernate team has a working demo[^].

'njoy Smile | :)

I are Troll Suspicious | :suss:

What I need is, while this transaction is executing by one client, no other client can execute the code lines between the "begin transaction" and "commit transaction".

I thought this is the default behavior, but I was apparently wrong.

[Edit]

1. I would like everything within a transaction be executed in a "critical section", is that too much to ask? Just wondering.

2. The transaction is on the server and within a stored procedure.

[/Edit]

My .NET Business Application Framework
My Home Page
My Younger Son & His "PET"

modified on Friday, December 18, 2009 10:10 AM

Short of having the first 'Begin Transaction' also disconnect all clients, I'm not sure how you would accomplish this. Some RDBMS support operational modes where client access can be retricted, but these are used more often for administrative purposes, rather than some type of application operation. Smile | :)

Chris Meech
I am Canadian. [heard in a local bar]
In theory there is no difference between theory and practice. In practice there is. [Yogi Berra]