Undo Management In Sql Server 200
May 20, 2007
hai to every one,
i am pavan working as oracle dba. in oracle we have undo table space.
when we issue rollback oracle gets old image from undo tablespace.
in sql server where it gets from old image.
who performs instance crash recovery(which back ground is responsible for it)
in sql server we have logwriter, lazy writers(back ground processes)
what are the other processess.
and some doubts are
how insert query works
how update query works,
how select query works.
means i issue update statement. command successfully executed. late issue rollback, from where sql server gets old imege of the data
please send me any archetecture book /pdf/online link
thanks
kumar
pavan
Associate Oracle DBA
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May 29, 2008
currently i m developing a web application with using sql server 2005
and i was testing yesterday a sql update query with sql server management studio.
in my update query i forgot to put where condition and now all the rows of table are updated. is there any solution to undo this and retrieve all rows back?
Regards Selena
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Apr 5, 2007
I have recently installed the SQL Server Management Studio Express but I do not find Management Tools in order to create scheduled backups and shrinking of the databases. I was under the impression that this should be included in the Management Studio. I use the SQL 2005 Express for smaller customers who run the SQL on a desktop unit. I need a way to backup the data to a server machine for backup purposes. I have uninstalled and reinstalled to no avail.
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Nov 21, 2004
Hello all,
I know that Oracle uses undo table spaces or rollback segments as its undo mechanism. what does Microsoft SQL Server use as its undo mechanism?
Krz
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Feb 9, 2007
I'm confused how the undo works when you restore WITH STANDBY
Suppose I restore WITH STANDBY
FULL
DIFF
LOG A
LOG B
LOG C
How do I undo LOG C? Do I restore LOG B again?
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Dec 9, 2007
Hello !
I have a big problem. I need to go back un changes that had been since the a specific date (beginning of november in my case).
Thanks a lot for any help on how to do this !
Regards,
Fabianus
my favorit hoster is ASPnix : www.aspnix.com !
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Apr 20, 2006
Is there anyway in SQL Server to rollback an SQL statement which wasalready executed. I know there is a transaction log but what itcontains and how it works is still a mystery to me.Assuming I delete all records from a table - can I somehow undo this?
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Dec 17, 1999
if we kill sp, let's say, on the third statement, will the first two
be rolled back (undo) ?
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Apr 9, 2008
How come Undo button does not work? Thanks.
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Jan 17, 2014
I have update a table field and I like to know how do you "undo" the update? I set the field_length from 6 to 7 and like to undo this.Here is my command:
table = template_fileds
column= field_length.
filed name= field_name.
update template_fields set field_length='7' where field_name='assesscode9'
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Dec 2, 2005
Muhammad Qasim writes "i hav query that i was just taking the backup of the database n by mistake i just clicked restore as the wizards are similar so i just restored the database to 10days old backup n now i have no latest backup so how can i just undo this restore if u hav any idea of how to overcome this plz reply as early possible lookin for replies"
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Aug 30, 2005
Hello,Somebody accidently deleted a record with cascade deletesand took out about 80 records.The database has been used heavily since then.How do I put back the data?I have spent hours researching BOL and all I can findis how to restore the database to a point in time.But that will lose all the work done after the mistake.(We do a full backup every week and log backup every day)Is there a standard way to do this?Morgan
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Nov 29, 2007
Hi
Can somebody advice me on this:
I am trying to update a row, which is being pulled from another table.
i.e., I have two tables T1 and T2
I am getting a row from T2 and inserting it in T1
then I am updating that row in T1
What i want is if in case these is an error while updating this row I want to remove the row from T1
T1 and T2 are same.
declare @err1 int
--BEGIN TRANSACTION
INSERT INTO dbo.T1 SELECT * FROM dbo.T2 WHERE UpdateFlag = 'Y' AND ID = '12345'
BEGIN TRY
UPDATE dbo.T1 set ReportDate= '9910-12-2006'
SET @Err1 = @@error
END TRY
BEGIN CATCH
insert into errorlog values (error_message())
END CATCH
--if @err1<>0
--begin
--Rollback transaction
--end
This work fine but I am not able to roll back the transaction
When I activate the codes fro roll back, it not performing the Logging operation in CATCH also terminating
REQUIREMENT
1) Get the record in T1 from T2
2) Update the record in T1
3) IF step:3 good commit it, else remove the only the row which was pulled from T2. It must do this also log in dbo.ErrorLog the errored system message error_message()
Thanks a lot in advance
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Oct 11, 2006
Hi ,
I was working in the SSIS designer and when I found that the DataFlow task I deleted was indeed something I needed, I tried to Undo the operation but Alas the option is not enabled :(
Is there a way we can undo the operations?
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Apr 2, 2008
I often run queries in Query analyzer. Today I accidentaly deleted some data from a table. Is their a way to undo the last SQL command executed?I have heard of the rollback command, but I don't know if that is applicable or not?
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Nov 28, 2007
I have full Recovery mode.
I just accidently deleted a handful of records out of a table about 10 minutes ago. My last backup was last night.
Can I go back 10 minutes ago for a specific table? If so how... DO I need to backup now, then use the trans-logs to recover up to a specific point?
Thanks!!
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Oct 21, 2015
USE [master]
RESTORE DATABASE [EmployeeRecovered] FROM DISK = N'D:BackupsNormalEmployeeFULL.BAK' WITH FILE = 1,
MOVE N'Employee' TO N'D:MSSQLDATAEmployeeRecovered1.mdf',
MOVE N'Employee_log' TO N'D:MSSQLLOGEmployeeRecovered1_log.ldf',
NOUNLOAD, STATS = 5, NORECOVERY
[Code] ....
Now I realze the recovery point is somewhere in TranBackup2.trn and need to go back to the state where only TranBackup1.trn is applied. How can i do this ?
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Sep 17, 2007
Hi,
I am in a process of designing a web application (ASP.NET) which is mostly data driven. The application needs to provide an undo functionality to users for eg. Undo an Add, Update or Delete that has been already committed to the database.
We are using SQL Server 2005 at back end. What I need to know is how will I enable this feature at database level. I am sure we might have to play with triggers but that too might not help in achieving the UNDO functionality. If anyone can shed light on how to achieve this, it will be quite helpful. Thanks
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Dec 18, 2014
1. A few months ago, I received a request to deny delete to a group (Windows AD login) against 3 databases. So I issued a DENY DELETE to the relevant Windows login.
2. Now, someone is having trouble updating data. The issue seems to be that a trigger fires during the update. In the trigger the code tries to delete from a table in the previously delete-denied databases. So the update fails.
-- In retrospect, perhaps I should have used REVOKE - not sure
-- Also, I can't seem to find a listing of the DENY permissions - or rather, how to list what permissions are denied. I guess maybe that is a hard thing to do if the result of a DENY is to leave certain permission columns NULL (vs adding 'DENY'). But it would be useful for me to see what the current permission state is.
-- Finally, I tried to undo the DENY without success. Here is my attempt.
a. I tried GRANT DELETE... - no luck
b. Then I saw an article explaining to use REVOKE, so I tried 'REVOKE DELETE' followed by 'GRANT DELETE' - still no luck.
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Aug 7, 2015
I have a table with 1 million records. I want to update only 400 records. The update statement is provided by a 3rd party vendor. Once i run the update statement it will update all the 400 records. Once the table is updated the users will validate the table
if the update is successful or not. What i'm looking for is:
1) Is there a way to identify what records were updated.
2) If the update done is not what the users wanted i need to undo and bring back the 400 records to their previous values.
I'm on sql server 2008.
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Jun 18, 2015
I received an alert from one of my two secondary servers (all servers are running 2012 SP1):
File 'E:SQLMS SQL ServerMSSQL11.MSSQLSERVERMSSQLDATAMyDatabaseName_DateTime.tuf' is not a valid undo file for database 'MyDatabaseName (database ID 8). Verify the file path, and specify the correct file.
The detail in the job step shows this additional information:
*** Error: Could not apply log backup file 'MyDatabaseName_DateTime.trn' to secondary database 'MyDatabaseName'.(Microsoft.SqlServer.Management.LogShipping) ***
*** Error: Table error: Page (0:0). Test (m_headerVersion == HEADER_7_0) failed. Values are 0 and 1.
Table error: Page (0:0). Test ((m_type >= DATA_PAGE && m_type <= UNDOFILE_HEADER_PAGE) || (m_type == UNKNOWN_PAGE && level == BASIC_HEADER)) failed. Values are 0 and 0.
Table error: Page (0:0). Test (m_freeData >= PageHeaderOverhead () && m_freeData <= (UINT)PAGESIZE - m_slotCnt * sizeof (Slot)) failed. Values are 0 and 8192.
Starting a few minutes later, the Agent Job named LSRestore_MyServerName_MyDatabaseName fails every time it runs. The generated log backup, copy, and restore jobs run every 15 minutes.
I fixed the immediate problem by running a copy-only full backup on the primary, deleting the database on the secondary and restoring the new backup on the secondary with NORECOVERY. The restore job now succeeds and all seems fine. The secondaries only exists for DR purposes - no one runs reports against them or uses them at all. I had a similar problem last weekend on a different database that is also replicated between the same servers. I've been here for over a year, and these are the first instances of this problem that I've seen. However, I've now seen it twice in a week on the same server.
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Sep 15, 1998
I accidentaly deleted data from the wrong table. Is there a way to un-delete what I had deleted.
need help ASAP.
Regards,
Steve
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Oct 9, 2006
Is it possible to run both Sql Server Management Studio: Express and full blown side by side?
I am developing with the full blown product but would like to test Management Studio Express on the same box.
Is this possible?
Thanks
Eric
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Feb 13, 2008
When I proposed start to use SQL Server 2005 for new VS 2005 web sites, one of my co-workers responded that
we will update the old SQL Server 2000 databases to SQL Server 2005 when we are ready to use 2005 SQL Server.
Questions:
1. Any expected problems to upgrade old 2000 databases to new 2005 SQL Server?
2. I have installed both 2005/Management Studio Express and 2000/Enterprise Manager in my PC. Any expected
problems when running both 2000 and 2005 SQL Server at the same database server?
3. What is the best configuration for running SQL Server 2005 when we have old 2000 databases? Upgade or not upgrade?
TIA,
Jeffrey
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Sep 20, 2007
I am trying to connect to a sql server 2005 server using either windows auth or sql server auth but I can not. When I click on the connect button to connect to a server it never connects. I can not cancel once I press connect. It never times out after I press connect. I removed all registered servers that were registered previously. I have uninstalled all software that involved sql server (and sql2000) run a registry cleaner(not microsofts), installed the software to a new directory and still I can not connect to the sql2005 server (the only db).
Any ideas?
I am running Windows XP with latest services packs for both windows and sql server. I have visual studio 2005 installed on my machine and I have had sql express installed on it previously.
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Jul 11, 2007
Hi,My webhost (1and1) is running SQL Server 2000 and their web tool supports the import of .bak files. However, when I try to import my .bak files created in SQL Server Management Studio Express I get the following error:"The backed-up database has on-disk structure version 611. The server
supports version 539 and cannot restore or upgrade this database.
RESTORE FILELIST is terminating abnormally."I have Googled this error and learnt that 2005 .bak files are not compatible with 2000 .bak files. I'm just wondering if there are any work arounds to this or alternative tools that I can create 2000 compatible .bak files from from 2000/2005 .mdf files.Thanks in advance.
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Jun 20, 2007
Dear All,
I am trying to connect to a remote sql server 2005. So I have install the Microsoft SQL Server Management Studio Express. When I try to connect I get the error below.
An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 53). Can some one please help. I have even port no 1533 on my pc. Thanks.
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Aug 28, 2006
Can I connect to remote SQL 2005 server through SQL Server Management Studio Express? I always get a error code 18456 when I try to connect to SQL 2005 server through SQL Server Management Studio Express. I'm sure I enter correct username and password!
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Jul 26, 2007
Hello,
I just installed SQL Server Compact Edition, since I am considering using it instead of SQL Server Express for a local database in my application. The documentation mentioned that I could use SQL Server Management Studio Express to connect to the Compact Edition and create and manipulate databases.
To try to connect, I run Management Studio and bring up the "Connect to Server" dialog. Unfortunately, the pull-down list of "Server name"s does not include the SQL Server Compact Edition server. I do not know how to type in the server name manually, so I cannot connect.
To install Compact Edition, I downloaded it and ran "SQLServerCE31-EN.msi". This installed, and I assume registered, a number of DLLs in "C:Program FilesMicrosoft SQL Server Compact Editionv3.1".
Is there perhaps an additional step that I left out to complete the installation?
Might I need an upgrade to some other components? My Management Studio Version is:
- Microsoft SQL Server Management Studio Express 9.00.2047.00
I would appreciate any help you can provide.
Thank you,
WTW
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May 7, 2008
Hi all
Which tool can I use for structure editing of SQL Server Compact 3.5 databases? I'm installed SQL Server Compact 3.5. I have SQL Server Management Studio Express which was installed with SQL Server 2005 Express. Unfortunately this SSMS can create and open only 3.1 databases.
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Apr 25, 2008
Hopefully a simple question: Is it possible to use Maintenance Plans created on SQL Server Management Studio (installed as part of an instance of SQL Server 2005 Standard Ed.) to back up databases running on an instance of SQL Server Express Edition with Advanced Services? I don't need directions, just whether or not it is permitted.
I've been able to create the plans including establishing connections to from SSMS to the the SQL Express instance, but they keep erroring out. I just need to know if this is actually permitted since Maintenance Plans are not available on Management Studio Express Edition.
Thank you in advance for your help.
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Aug 8, 2007
Hello,
I just installed SQL Server 2005 Enterprise edition from my company's DVD. It was installed with the setting of using both Integrated windows authenitication as well as basic named authenication. I installed all the options too: Database Engine, Analysis Services, Reporting Services, SQL Server compact edition, and Integration Services. When I look at services there are: SQL Server Integration Services, SQL Server Analysis Services, SQL Server Reporting Services, and SQL Server Browser. All of which are running. Something that took me offguard was the installation did not ask me to provide an SA password. Other than that, the install looked like it went good.
I was able to connect to the local instance of the SQL Server 2005 using the SQL Server Management Studio. I could connect with SA, or connect with Integrated Windows Authenication. Whoohoo. Off and running! As a matter of fact, for the SA account I could use any password and it would still log me in.
First thing I did was I went in to the copy wizard to attempt to copy a database from a server on our network to my local box. First it asked me for the remote server. Then when I specified my local instance in the wizard, the wizard complained that my local instance was NOT SQL Server 2005. Doh! This I didn't understand. I figured maybe I need to check for MS updates. Sure enough, I found that ther was a SP2 and then a hot-fix for that SP2. I applied both. Now I cannot connect from SQL Server Management studio to my local instance of SQL Server 2005 database server. I get the following error:
"An error occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 2)"
However, I went in to see what other services I could connect to, and here's the results:
Analysis Services : OK!
Reporting Services (Windows Auth/Basic/Forms) : NG "The reporting Services Instance could not be found (Microsoft.SqlServer.Management.UI.RSClient)"
SQL Server Compact Edition : NG "The database cannot be found. Check the path to the database. [ File Name = CCG092 ] (SQL Server Compact Edition ADO.NET Data Provider)
Integration Services : OK!
I can connect to other SQL Server databases on our network. However, just not my local one. No one on the network can connect to me either.
I even turned off my windows firewall and still no luck connecting to my own.
So something really went wrong when I applied SP2, however, admittedly from the error message when I tried to use the copy wizard, something was probably already wrong.
Any ideas?
Thanks!
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