Transaction Log Needed When Full Backup Is Done?
Apr 30, 2008
Please correct me if I am wrong with this:
I am using SQL Server 2000, when I do a backup I use the database maintenance plan at enterprise manager. I select my database and then I schedule the complete backup and transaction log backup to "everyday at 22:00:00"
My question is, do I really need to do the transaction log backup? If I am not wrong with the complete backup I can already recover all my data, the transaction log backup is useless if done at the same time that I do the complete backup, right?
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Jul 15, 2015
We take a full backup in the early morning and hourly transaction log back during the working hours for one database in the production server. The application team made certain changes to the design of the said database in their development server. The backup from the development server was restored to the production server during working hours. After the restoration should we take a full backup before next transactional logbackup? Would the transactional log backup with out a full backup after the restoration of a database be valid?
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Apr 30, 2008
Please correct me if I am wrong with this:
I am using SQL Server 2000, when I do a backup I use the database maintenance plan at enterprise manager. I select my database and then I schedule the complete backup and transaction log backup to "everyday at 22:00:00"
My question is, do I really need to do the transaction log backup? If I am not wrong with the complete backup I can already recover all my data, the transaction log backup is useless if done at the same time that I do the complete backup, right?
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Apr 16, 2008
In my enrv. DBA just migrated SQL Server 2000 Databases from WINDOWS 2000 to WINDOWS 2003 Enterprise Edition and the same SQL version. The problem which i need to analyse
1. Why the full backup size is occupying only 70GB when DB size is 120GB?
Here is the situation
Full Backup is taken once every day ---- 70gb
Diff Backup Taken every 3 hrs till 5 PM ----- size is 50GB
Transaction log backed up every 10 min uptill 8 PM ----- not a big size
I am really confused as to why Full DB Backup is taking only 70GB.............Can some one please throw a Light on how the SQL Server 2000 Backup functions.
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Mar 11, 2008
Hello, everyone:
I just heard that for restore purpose, ths full backup and transaction log backup should be from one maintenance plan. Otherwise transaction log backup files cannot be restored after restoring full backup files.
Is it true? Can anyone offer official documents?
In my system, full and transaction backups are from one maintenance plan. Restores are doing fine. I am not sure that ideal is true or not.
Thanks
ZYT
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Mar 10, 2008
I have this database "DB1" which is in FULL recovery mode.
I run full daily backup -Monday to Saturday
DB1_Mon.bak
DB1_Tue.bak
DB1_Wed.bak
DB1_Thur.bak
DB1_Fri.bak
DB1_Sat.bak
Come Sunday - for the first time I have run transaction log backup.
DB1_Sun.trn
And now, I need to restore DB1 - but the only full backup that I have is the Monday - "DB1_Mon.bak"
Is my database complete if I restore only "DB1_Mon.bak" plus the "DB1_Sun.trn"?
Jeboy
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Oct 14, 2007
Hi, I am reading the book of MCTS Self-Pace Training Kit. If I set up the option of Recovery Model in the properties of a database, Does SQL Sever will generate/update the log file per transaction? What is the relationship between Transaction Log files and Recovery? When we want to recover a database, we can use the database's backup. Why we need to keep Transaction Log?
Sincerely,
Julian
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Feb 1, 2001
hi, I would like to know the correct reaction for a crash in both senarios.
First senario,
I made a full back up at 6 am , then scheduled sql server to make transaction log back up every 2 hours (8,10,12,2 pm,4,6,8) . If I have a crash at 12:30. How would I resotre the data in the first senario....Can I restore the full back up done at 6 am then restore the last transaction log backup ( which is 12 Noon ) . I am not sure If I need to resotre the whole tran from 6 am till the time it was crashed.
Second senario,
I made a full back up at 6 am, then scheduled sql server to make Incremental backup every 2 hours (8,10,12,2 pm,4,6,8) . If I have a crash at 3:00 pm. How would I resotre the data in the second senario. ....Do I restore the full backup at 6 am then restore each incremental backup backwords ( 2,12,10,8)
AS you can see, I am not sure how to deal with this issue, I do appreciate your feedback.
Best regards
Ahmed
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Jul 12, 2007
In MS SQL 2005 when you do a Full Backup does it also backup andtruncate the transaction logs or do I need to back the transactionlogs up separately?Thanks.Brian
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Feb 19, 2015
Using Ola Hallengren's scripts I do a full backup of a database on a Sunday. Then differential backups every 6 hours and log backups every hour. I would like to keep a full week of backups based off the full backup done on Sunday. Is there a way for me to clear out the diff and log folders after the successful full backup on Sunday nights?
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Aug 3, 2015
Need to restore database,here's the scenario:
Data got deleted on Friday evening, need to have database restored to FRiday afternoon and also some data has been entered on Monday, which needs to be there.
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Nov 16, 2015
I have a database that is just over 1.5GB and the Full backup that is 13GB not sure how this is since we have compression on for full backups and my other full backups are much smaller than there respective databases...Now my full backup is taken every Sunday night and the differentials are taken every 6 hours after the full backup. Now I have been thrown into this DBA role with little to no experience just what I have picked up and read. So my understanding of backups are limited but what I think I understand is that we take a full backup and the differential only captures what changes in the database so my question is why is my database 1.5GB but my differential is 15.4GB? I have others database that are on the same instance and don't seem to have this problem. I also just noticed that we do not rebuild the index before a full backup like we do on other instances...
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Nov 29, 2007
If my backup starts at 8PM and take 1 hour to complete, will the changes made to the database during that hour be captured in the full backup?
Stated another way, will my backup be a snapshot of:
a) 8PM when the backup started
b) 8PM with some of the changes made between the hour
c) 9PM when the backup finished?
Anybody know the exact way SQL Server handles that logic?
Thanks,
Marc
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Jul 19, 2007
Hi
I am using the Simple recovery model and I'm taking a weekly full backup each Monday morning with differentials taken every 4 hours during the day.
On Wednesday afternoon, a programmer ran a process that corrupted the db and I had to restore to the most recent differential. It was 5pm in the afternoon and a differential backup had just occured at 4pm. No problem, I figured.
I restored the full backup from Monday morning and tried to restore the most recent differential backup. The differential restore failed. Since I had used T-SQL for the initial attempt, I tried using Enterprise Manager to try again.
When viewing the backup history, I see my initial full backup taken on Monday plus all the differentials. BUT, on closer inspection, I noticed another full backup in the backup history that was taken early Tuesday morning. I can't figure out where this Tuesday morning full backup came from. It wasn't taken by me (or scheduled by me) and I'm the only one with access to the server. My full backups are usually named something like HCMPRP_20070718_FULL.bak. This erroneous full backup was named something like HCMPRP_03a_361adk2k_dd53.bak. It seemed like it was a system generated name. Not something I would choose. To top it off, I could not find this backup file anywhere on the server and when I tried to restore using this full backup, it failed.
Does anyone have any clues as to where this full backup might come from? Does SQL Server trigger a full backup on its own if some threshold is reached?
I ended up having to restore using the differential taken just before this erroneous full backup and lost a day of transactions.
Any insight is greatly appreciated.
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Aug 8, 2007
Hello,
I have MS SQL 2005 server with 300+ databases on it. The application is set up that way that it creates a new database as needed (dynamically). Do not ask me why - I hate this design... So, it can create 3-4 databases a day (random time).
I've scheduled full backup of all databases to run once at night, and it runs just fine. Besides that, I have scheduled tran logs backup of all databases to run every hour. This backup fails from time to time with the following error:
Executing the query "BACKUP LOG [survey_p0886464_test] TO DISK = N'D:\backups\log backups\survey_p0886464_test_backup_200708072300.trn' WITH NOFORMAT, NOINIT, NAME = N'survey_p0886464_test_backup_20070807230002', SKIP, REWIND, NOUNLOAD, STATS = 10
" failed with the following error: "BACKUP LOG cannot be performed because there is no current database backup.
BACKUP LOG is terminating abnormally.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
So, I think what happens is since my full backup of all databases are scheduled to run only once at night, and tran logs every hour, when new database is created during the day, there is no full backup for it, that is why tran logs backup fails. Becuase after the failure, if I run full backup again, then tran log runs just fine afterwards.
I am new to MS SQL Server, I am mostly working with Sybase IQ. Do you know if I can "trigger" full backup every time when new database created to avoid tran lof failure?
Or is it possible to schedule full backup to run if tran log backup fails?
Any advice will be much appreciated.
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Oct 17, 2006
I have a full backup and several diff backup,now i want to restore
firstly,I restore full backup
RESTORE DATABASE ***
FROM DISK = 'D:databackup200610140000.bak'
WITH NORECOVERY
GO
it's working,then i don;'t know how to continue
Thanks in advance
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Mar 15, 2007
If I create an adhoc db backup that takes, say 30 miuntes to complete, should I suspend the tran log backups that run every 10 minutes, until the full backup is complete?
Drew
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Jun 6, 2007
Hi,
Using SQL Server 2005, we have a 2.8Gb database under the Simple recovery model. The database contains ~50M rows and each night ~60k rows are loaded(appended) to the database by a SSIS task.
We configured a Maintenance Plan which is executed once a week to perform a full backup of the database. The resulting backup file is ~2.8Gb, as expected.
We also configured another Maintenance Plan which is executed every day, a few hours after the SSIS task is executed, to perform a differential backup. To our surprise, the resulting backup file is about the same size as the full backup, ~2.8Gb when it should only be a few MB (only 60k rows are added to the database)
When we launch the "Restore Database" wizzard we clearly see the different backup set, Full and Differential but they all have about the same size (same for the physical backup file on disk).
Is there anything we are missing, why are the differential backup that big?
Thanks for any advice.
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Mar 21, 2008
Hello,
Background: I am a Software Engineer - not a DBA - with limited SQL knowledge (I know the SQL but not the configuration stuff)... I am sure others need this too - I tried but cannot find the answers online... please help me with a few questions:
Task: I need to find an way to install a database via Installshield 2008/command-line (silently), that is accessible locally and remotely regardless of what was already installed, and accessible only to our program - not users, so I am thinking use SA and a strong password since windows authentication may not apply with multiple users accessing this DB and they do not need to login on to the server - only our program does - sound right to use Mixed?).
Questions:
Can SQL 2005 Express be installed when SQL 2005 Full edition is already present?
Can SQL 2005 Express be installed without an instance name?
I think I read an instance name is required in Express, that if I do not provide it defaults to SQLEXPRESS -
So, if the prior question's answer is 'no, they cannot both exist'... prompting the next question:
If the Full version is already installed, should/can I use it - AND - can I add a New Instance silently via command line or ???
Any other ideas on why I can install 2005Express on one system, and not on two others (all 3 are development machines: VS 2005, SQL Express and that's about it)?
Currently I have figured out a command-line call to install - the command I came up with during testing is:
start /wait C: empSQLEXPR32.EXE /qb INSTANCENAME=CINST ADDLOCAL=ALL SECURITYMODE=SQL SAPWD=STR2PWD4SA SQLBROWSERACCOUNT="NT AUTHORITYNETWORK SERVICE" SQLACCOUNT="NT AUTHORITYNETWORK SERVICE" AGTACCOUNT="NT AUTHORITYNETWORK SERVICE" SQLBROWSERAUTOSTART=1 SQLAUTOSTART=1 AGTAUTOSTART=1 DISABLENETWORKPROTOCOLS=0 ERRORREPORTING=1 ADDUSERASADMIN=1
This looks like it might work for SQL Express 2005 - I do not have the full edition installed, yet - thus, this post.
The errors I got, shown in the summary.txt as 'Error 10' on one system with no other info.
My other system reports:
Microsoft SQL Server 2005 9.00.3042.00
==============================
OS Version : Microsoft Windows XP Professional Service Pack 2 (Build 2600)
Time : Fri Mar 21 16:45:25 2008
Machine : TONELSON
Product : Microsoft SQL Server Setup Support Files (English)
Product Version : 9.00.3042.00
Install : Successful
Log File : c:Program FilesMicrosoft SQL Server90Setup BootstrapLOGFilesSQLSetup0007_TONELSON_SQLSupport_1.log
--------------------------------------------------------------------------------
SQL Server Setup failed. For more information, review the Setup log file in %ProgramFiles%Microsoft SQL Server90Setup BootstrapLOGSummary.txt.
...not much to go on as to why it is failing - maybe the hotfix:
C:Program FilesMicrosoft SQL Server90Setup BootstrapLOGHotfixSQL9Express_Hotfix_KB921896_SQLEXPR.EXE
in the directory is blocking the install?
The goal is for my application to use the same connection strings regardless of 2005 full or 2005 express.
Need to figure this out -
Thank you,
Todd
Software Engineer/Developer... learning a lot about SQL
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Dec 4, 2007
Afternoon,
I have a few Log Shipped DBs that are working great.
Currently they are set to fire off every 15 minutes 24/7.
My question is this ... I need to get FULL backups of the source DBs in order to restore them on certain Dev boxes.
If I were to execute the full backup on one of these Log Shipped DBs ... how would it affect the log shipping process?
Is there a special method to accomplish this?
As a side note, what would be some concerns/issues if in being able to create the FULL backups and not interupt log shipping, I were to create the backup using a 3rd party tool like Quest LiteSpeed?
I sure wish we were on Enterprise, then I could create a mirror and then snapshot off it to create my backups BUT ... that is not the case as we stand today.
Thanks
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Jul 16, 2007
Hi,
I have run a lot of insert/ delete, update queries on a database in sql 2005 for a couple of months
Is there a way to track when and what are sql transactions that are have been executed?
Thanks in advance for your time and help.
whitze
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Jun 13, 2007
what is the differences between a differenctial backup and transaction log backup?
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Oct 14, 2007
I neglected to backup the transaction log as part of the process of backing up the database. Now i only have the backup file for the database and no transaction log backup. When i try to do a restore on the database, i get the error on a "tail log missing" message (which i'm assuming is that it's looking for the t-log backup?).
Is it possible to restore or even restore to a new database? I'm only looking to retreive data from 2 tables within the backup file.
Thanks!
SQL Server 2005 on Windows 2003 Server x64.
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Oct 23, 2015
In SQL Server, whether the full backup of a database includes the backup of the log?
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Jun 14, 2007
Hi:
I have 30 databases on sql server 2005 that I need to do a full backup every morning at 7:00 and tran log backup every 30 minutes until 7:00 PM. If I create a maintenance plan for a backup using the wizard I have the option of starting a full backup at 7 am and then an option of doing tran log backups every hour using a different schedule. I plan on selecting the option to create a different folder for every database. I just need to confirm that in this way the way to restore the data would be
1. to restore a full backup
2. apply all the tran logs depending on the time they want to recover back to.
I just think this is the easiest approach to have 30 databases on the same backup scheme instead of creating a separate backup device for each database and doing a full backup on that device and appending all tran logs to that device which means just 1 bak file versus the above strategy with a number of tran log files. Please advise.
Thanks
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Jun 21, 2006
Hi,I have 2 stored procedure 1st insert the data in parent tables and return the Id. and second insert child table data using that parent table id as paramenter. I have foreign key relationship between these two tables also.my data layer methods somewhat looks likepublic void Save(order value){using (TransactionScope transactionScope = new TransactionScope(TransactionScopeOption.Required)) { int orderId = SaveOrderMaster(value); value.OrderId = orderid; int childId = SaveOrderDetails(value); //complete the transaction transactionScope.Complete(); }}here 1. SaveOrderMaster() calls an stored procedure InserOrderData which insert a new record in order table and return the orderId which is identity column in Order table.2. SaveOrderDetails() call another sotored procedure which insert order details in to table "orderdetail" using the foreign key "orderid".My Problem:Some time the above method works correctly but when i call it repeatledly (in a loop) with data, some time it gives me foreign key error which state that orderid is not existsin table Order. This will happen only randomly. I am not able to figureout the reason. does some one face the same problem. if yes, what could be the reason and/or solution.
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Apr 25, 2007
Hi,
We have configured the following in the Publisher server..
1) Merge Replication - Synchronisation to be running in the continuous mode.
2) Merge Replication - Synchronisation in Scheduled mode.
The issue that we are facing here is the transaction log file of the databases which are in replication are growing very largely. And we get this error message in the Subscriber :
Error messages:
The Merge Agent failed to retrieve article information for publication 'MCC_Pos_CashlessPub'. Increase the -QueryTimeOut parameter and restart the synchronization. When troubleshooting, use SQL Profiler or restart the agent with a higher value for -HistoryVerboseLevel and check the output log file for errors. Correct any database engine conditions that may be causing internal replication stored procedures to fail. (Source: MSSQL_REPL, Error number: MSSQL_REPL-2147201017)
Get help: http://help/MSSQL_REPL-2147201017
The transaction log for database 'tempdb' is full. To find out why space in the log cannot be reused, see the log_reuse_wait_desc column in sys.databases (Source: MSSQLServer, Error number: 9002)
Get help: http://help/9002
In fact for the past two days there are no data movement or any changes to the table, still we are able to see the growth in the transaction log file.
As mentioned in the error description when checked the log_reuse_wait_desc column of the sys.databases table, it showed the value "LOG_BACKUP". So took database backup 3 times. and took transaction log backup 2 times from the subscriber server in which the error was thrown. Still the issue persists. There is no change in the transaction log size.
What is the reason behind the growth of LDF?? Is it because of Merge Replication Configured in the server??
Kindly check and let as know regarding this issue. We are facing lot of problems because of this issue. Thanks in advance.
Regards,
Swapna.B.
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Jun 27, 2007
How can I clear some logs in the transaction log?
I also found some solutions that must run DBCC. How to run DBCC in SQL Server 2000?
Thank you.
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Nov 26, 2000
I have a transaction log which is 1 Gb and only has about 40 Mb free. When I run DBCC loginfo I find the first active log dates back to the middle of August. Does any one have any suggestions on the best way to approach this situation. How can I query the transaction log to find out what the old transactions are? I was going to use the detach database, rename log, attach database to shrink the log but don;t want to do this incase there is active data in the log. We are doing hourly log dunps.
Thanks
Grant
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Jul 18, 1999
Hi all
I found that my transaction log is beig filled up and I tried to truncate it from DB properties window
and I failed.
I want to know how to truncate it and how to prevent it from growing up untill it's filled
Thanks
Mohamed
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Mar 14, 2002
Our transaction log filled up the hard drive on the server and we are looking for a quick and easy way to delete it. Any ideas? We can't easily back it up because it is over 10500 meg in size.
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May 30, 2001
Hi,
I need help fast. I have a SQL Server 6.5 SP2 database that is 5000 MB and the transaction log is 1000 MB the log is 98 % full but will not truncate. I have tried all the truncate commands (Truncate only, no_log, DBCC) but it will only trucate the log like 10 MB.
Dose anyone know how to truncate this log??
Any help will be appreciated.
Thanks in advance for you help.
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Mar 14, 2000
I have a problem with the transaction log of a database. when i truncate it and check the properties if says there are 0 MB available even though it is allocated 300 MB. this seems to be causing alot of problems.
Any idea why the log will not truncate??
regards
ML
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