Data Missing In The Full Backup
Nov 18, 2006
i have a 2005 db with full recovery mode. daily full backups, diff backups and log backups are done through sqlagent. i wanted to make a copy of it on another instance using the restore method with the latest full backup. after i created the new db, i noticed that a few tables were missing and columns were missing from existing tables also. futhermore, the recrods in these tables were not up-to-date either. i did fresh a full backup and tried again and the problem persisted. i aslo tried to restore on the same sql server instance under a different db name and that reproduced the problem.
the database schema was changed a few weeks ago and it seems that i am only seeing a snapshot of the database before the schema change. dbcc checkdb returns no error. the size of the backup file looks reasonable and i seen an increase in size since the schema change which is expected. there is no active transactions in the db and if i generate a create script, it contains proper t-sql that matches the current schema.
what am i missing there? what could i be doing wrong? i am lost here and any help or advice will be greatly appreciated!
View 1 Replies
ADVERTISEMENT
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
View 2 Replies
View Related
Nov 13, 2014
If data is modified (by an insert, update, or delete) while the backup is running, will the backup contain those changes or will it be added to the database afterwards?
View 2 Replies
View Related
Feb 14, 2008
question 1:
i found that database log file can contain more records after performing backup database statement.
for example:
i create a database and limit the log file to 2mb. then i create a table and insert data.
If i backup the database before i insert data , the database file can contain 192 records unitl the log file is full.
If i don't perform the 'backup database' statement.
The 'dbcc sqlperf(logspace)' indicate the utilization ratio is less than 40% after inserting 192 records
why?
I list my code:
Code Snippet
create database db_test
on primary
(
name=db_test,
filename='C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDatadb_test.mdf'
)
log on
(
name=db_test_log,
filename='C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDatadb_test_log.ldf',
maxsize=2mb
)
go
backup database db_test to disk='db_test.bak' --- if i don't execute this line, log file can contain a lot of record
go
create table db_test..table1(col char(8000))
--insert data to fill up the database log
declare @n int
set @n=0
while @n<192
begin
insert into db_test..table1 values(replicate('a',8000))
set @n=@n+1
end
question 2:
i create a database and limit the log file to 2mb. Then i create a table and insert data in an endless loop.
After the inserting operation executing for a while, the 9002 error occurs, indicate the log file for the database is full.
But the 'dbcc sqlperf(logspace)' command indicate the unilization ratio is low, and log_reuse_wait_desc in sys.database is 'CHECKPOINT'
And I can insert data , and i'm sure the state of log_use_wait_desc is 'CHECKPOINT'.
As i known, the checkpoint can't truncate log under full recovery model. Only the back log operation can truncate the transaction log.
So log is not full, why 9002 error is encounterd. and why the log_reuse_wait_desc return 'CHECKPOINT'?
I list my code:
Code Snippet
create database db_test
on primary
(
name=db_test,
filename='C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDatadb_test.mdf'
)
log on
(
name=db_test_log,
filename='C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDatadb_test_log.ldf',
maxsize=2mb
)
go
create table db_test..table1(col char(8000))
--insert data to fill up the database log
declare @n int
set @n=0
while @n<>-1
begin
insert into db_test..table1 values(replicate('a',8000))
end
any suggestions?
thanks in advance.
View 5 Replies
View Related
Nov 3, 2014
I scheduled automatic backup process but its only showing backup of the only one .sql file in the backup folder. Other created .sql files are not backed up. Why is it so?
View 5 Replies
View Related
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?
View 2 Replies
View Related
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.
View 8 Replies
View Related
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?
View 5 Replies
View Related
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...
View 13 Replies
View Related
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.
View 3 Replies
View Related
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.
View 1 Replies
View Related
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
View 3 Replies
View Related
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
View 2 Replies
View Related
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
View 9 Replies
View Related
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.
View 4 Replies
View Related
Oct 23, 2015
In SQL Server, whether the full backup of a database includes the backup of the log?
View 1 Replies
View Related
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
View 1 Replies
View Related
Apr 22, 2006
I watched the How do I video "Create a Full-Featured Customer Login Portal" several times, and have compared my code to the downloaded VB code. I seem to be missing something.
I am trying to replicate what he does in the video, where he uses the login name to query another database and display the matching data. In the video he starts by using a querystring (page.aspx?userID=name) before creating a login page.. My program works with this method. However, later he creates the login page, and the system seems to automatically link the user database with the northwind database and give results without the querystring. There is no indication of how this is done. When I examined the downloaded code, he actually uses a session variable in the Page_Load event on the orders page. There is no explanation of this either, just a quick "I'll paste this from the clipboard."
I have compared my code line by line, and it matches exactly. I can only guess that there is a missing step where a relationship is established between the ASPNETDB.mdf file and the northwind.mdf file. Can anyone explain this to me? Thank you.
My goal is to have a user log in, and the site automatically query the second database for that users statistics, and display them.
View 3 Replies
View Related
Jul 23, 2005
Hi,One of our backup jobs failed this morning but nothing got written intowin nt application event log. This way our MOM 2005 couldn't generatean alert on this event since mom inspetcs application event log forthat purpose (event id 17055). I see backup errors about 10 days ago inthe appl log. What could have caused that? Any help will beappreciated.Stan
View 1 Replies
View Related
Jan 17, 2008
Hi everyone,
I'm trying to configure log shipping on a 2005 sql server. I follow the wizard's instructions (see http://technet.microsoft.com/en-us/library/ms190640.aspx) and everything looks right except for the backup job that somehow is not being created on the primary server. Secondary server contains copy, restore and alert jobs.
No errors reported on job monitor.
Any ideas?
Regards,
View 9 Replies
View Related
Feb 25, 2013
Recently migrated from 2008 to 2012. Everything is working fine; however went to take my first set of backups today and one of them blew up:
Executing the query ...
Backup and restore errors: Unexpected number of disk files associated with database object. Possible cause for that is missing or corrupt cryptokey.bin or detach.log file.
Execution complete
Not finding much online on the specific error.
- Data source is valid
- Can process the cube
- Can query / navigate cube
Next step would be drop/recreate; however this is an older cube that I'd prefer to leave alone at this stage if possible.
View 1 Replies
View Related
Jun 23, 2015
I've a SQL Server Express 2012 DB that I need to backup and restore on a different machine.I know that in the past someone performed full db and logs backup with sqlcmd.exe and I found some of this backup files but not all of them.In the last 6 months no backups has been taken.What is the right procedure I need to follow in order to save a backup of this DB and restore it on different machine withou losing data?
View 9 Replies
View Related
Mar 29, 2007
Hi all,I'm having a problem restoring backup from 2000 to 2005. The actualrestore process went ok. However, the database user of the restoreddatabase is missing a Login Name. I've made sure that the Login Nameis created in 2005. Also tried deleting the user, but couldn't theuser is db owner. Is there any way that I can assign a Login Name forthis database user or maybe drop this user and assign another one?Regards,Gerd
View 2 Replies
View Related
Jul 20, 2005
I start a full backup on a database at 5pm. The backup job takes 3hours to complete. While the backup job is running, someone insertsrecords to the db. Will the backup include the new records? Or inother words, are the contents of a SQL Server backup a snapshot of thedatabase at the start time of the backup?
View 1 Replies
View Related
Dec 10, 2007
I have a scheduled job backup/maintenance plan. In it I told it to delete all logs older than one day.
Does that mean it delete logs for every job or just that job? I ask because for some reason all the logs on every job is being truncated down to one day.
Thanks
View 1 Replies
View Related
Feb 23, 2015
We need to setup an AO availability Group for a database for which a full backup exists but the DB is in simple recovery mode now. If i change the recovery mode to full and try to configure AG will this full backup will be used or do i need to create a new full backup.
View 4 Replies
View Related
Jul 20, 2005
If a full backup kicks off at 6pm within SQL Server, and takes 2 hoursto complete, will transactions between 6pm and 8pm be included in thebackup?Tks
View 1 Replies
View Related
Jul 20, 2005
Question 13 GHZ CPU (Intel pentium 4) single cpu + 2 GB Memory + SCSI HDDDatabase size 10 GB - How long will full database backup take if thebackup is writing a file to the hard disk (separate hard disk)Question 2during this full backup are users and application able to access thedatabasefor examplea) select recordsb) insert , update, delete recordsor is the database backup causing the database to be exclusivelylocked up ?Thanks in advance
View 2 Replies
View Related
Dec 5, 2007
Hi all,
We have log shipping set up for some our databases.
So, my question is, Can i take a FULL BACKUP of databases which are involved in log shiping at primary.
--> Please give your comments on this.
Thanks.
View 4 Replies
View Related
Nov 29, 2000
We are doing a full backup at night. During the day we are doing a backup of the log every hour. How do I delete the log backups from the media without deleting the device itself. I would like to do this once we have a full backup for the day. The media we are backing up the logs to is disk.
View 3 Replies
View Related
Feb 17, 2004
Hi Everybody,
I am kind of new to MS SQL server databases. I like to take a full export at database level. When I use DTS wizard, it did allow me to take one table at a given time. I have 1000's of table in my database. Manually doing so is not possible. Should i call the 'bcp' command line utility 1000 times to collect the table data to 1000 different flatfiles or is there any provision to take export of all the 1000 tables in one single command/tool.
Many thanks.
View 8 Replies
View Related
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?
View 2 Replies
View Related
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
View 1 Replies
View Related
