Point InTime Recovery
May 21, 2002
Hi Guys,
I wanted to know how to do a point in time recovery on sql server 2000.
I wanted to go back in time when I restore the file.
Can u also suggest any good book about it. Does BOL explains about it, I couldn't find it in BOL.
Thanks in advance.
Joe
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Mar 26, 2008
Hello all,
First off, I appreciate the time that those of you reading and responding to this request are offering. My quesiton is a theoretical and hopefully simple one, and yet I have been unable to find an answer to it on other searches or sources.
Here's the situation. I am working with SQL Server 2005 on a Windows Server 2003 machine. I have a series of databases, all of which are in Full recovery mode, using a backup device for the full database backups and a separate device for the log backups. The full backups are run every four days during non-business hours. The log backups are run every half hour.
Last week, one of my coworkers found that some rarely-used data was unavailable, and wanted to restore a database to a point in time where the data was available. He told me that point in time was some time back in November.
To accomplish this, I restored the database (in a separate database, as to not overwrite my production database) using the Point in Time Recovery option. I selected November from the "To a point in time" window (I should note that this window is always grey, never white like most active windows, it seems), and the full database backup and the subsequent logs all became available in the "Select the backup sets to restore" window.
I then tried a bevy of different options from the "Options" screen. However, every restore succeeds (ie: it doesn't error out), but seems to be bringing the database back to a current point in time. It's never actually going back to the point in time I specify.
My questions are as follows:
a) Is it possible to do a point in time recovery to a point in time BEFORE the last full database backup?
b) If so, what options would you recommend I use? (ie: "Overwrite the existing database", restore with recovery, etc etc).
I again appreciate any and all advice I receive, and I look forward to hearing from anyone and everyone on this topic. Thank you.
Ryan
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Dec 23, 2014
is bulk logged recovery model support point in time recovery
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Sep 2, 2004
We have been testing point of time recovery using EM and found that this does not work.
We enter date and time and do net get the logs restored. Even if we use the default date it does not work. In Query Analyser we have have managed to recover to a point in time. Anybody got any idea why EM does not work.
We are using 2000 sp3
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Oct 13, 2006
Dear All,
How do we accomplish point in time recovery with SQL Server database.
For example:
My backup schedule is
Monday - Complete database
Tuesday - transaction log backup
Wednesday-transaction log backup
Thursday - transaction log backup
Friday - Complete database
Saturday - transaction log backup
Sunday - transaction log backup
For complete database backup, I use the below syntax:
BACKUP DATABASE myDB
TO DISK= @File1
WITH DESCRIPTION = @Desc
For transaction log backup, I use the below syntax:
BACKUP LOG myDB
TO DISK= @File1
WITH DESCRIPTION = @Desc
With this scenario, can I accomplish a point in time recovery? For example, if my database crashes on thursday night. How do i do complete recovery till that time?
Pls guide...
Regards,
qA
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Aug 10, 2000
Hi Everybody:
We plan to do point-in-time recovery for certain databases. We plan to do Complete Database Backup every night and transaction log backup every two hours from 8:00 AM to 5:00 PM. I have following questions regarding the log backup.
1. There are two type of backup 'Append to media' or 'Overwrite'. If I choose 'Append' for log backup, is that mean I only need to restore database against last log backup file because all previous log backups have been accumulated there?
2. Can I automatically truncate log after the backup is done? How I can do it?
Thank you very much.
Joan
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Nov 11, 2001
Is is true that in SQL Server 7, a point in time recovery can not read the active logs? So that any point in time recovery has to be with in some time frame of the backups of the logs?
Example:
If you have a full backup at 5 am.
Log backups every 2 hours.
You need to recover at 3:55. You would have to go back to your full backup from 2 am and the transaction logs from 6, 8, 10, 12, and 2.
You would lose any work done from 2-3:55pm?
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Jul 26, 2007
When restoring a database where the data file(s) are located under a mount point, seems to be a problem with reporting free space available.
DB Size - Say 30GB (25 Data, 5 Log)
E: Drive 20GB with 15GB Free
Restoring database file to
E:SQLMountPoint
- This points to separate disk with more than enough free space
SQL prevents the restore by stating there is not enough free space.
A long work around is
assign a drive letter to the large disk
Restore database using temp drive letter - F:SQLDATAMyDB_Data.mdf
Update sysfiles - changing drive & path - E:SQLMountPointSQLDATAMyDB_Data.mdf
Stop & restart database...
Is there a better way???
Wishlist - Restore only warns about free space - but allows continue...
Regards
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Jun 9, 2015
I have two databases on a Production Server that I want to Log Ship to a Test Server. According to the sys.master files the physical File Location is on an E drive. Early attempts at Log Shipping these two files error'd out due to space issues on the E drive (one Log Shipped and then one err'd out). I was subsequently informed from the server group that they would prefer that I Log Ship these two database files over to the M Drive where more space is available. In fact, they modified the Server Properties / Database Settings / Database Default Locations (for Data and Log) to the larger M drive (I'm not really sure why they just don't increase the E drive space but there is proabably a good reason).
Okay, so now my problems have been solved. Easy enough. Now I deleted the successful Log Shipped database and started from scratch. However, as before, one db restored and one failed (due to space issues). Apparently, both db are pointing towards the E drive. How is that possible?Â
So here I am with one successful database and the normal sys databases pointing to the E drive. What is the best way of approaching this  move to the larger and preferred M drive?
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Oct 23, 2015
I make two full backups on Oct 1 and Oct 10. I want to restore the server to a state in Oct 5. So I just do as follows:
Â
Perform a transaction log backup on the server on Oct 23. I have never backup transaction log in the past. Restore the server with Oct 1 full backup with NORECOVERY option.Try to restore to the point at Oct 5 12:00, with the transaction log.
Â
But the restore fails and  SQL Server said the transaction log does not contain the point. The point is too early. Why? Also my .LDF file is about 13G, but the transaction log backup is only 200MB. Why?
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Dec 18, 2001
Hi All,
If I perform a truncate table (non-logged operation) in my application, will this preclude me from being able to do a partial recovery (point-in-time) of my app. using the transaction logs?
Thanks in advance,
Liz
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May 6, 2015
How do I recover point in time if the database is participating in transactional replication and is a publisher.
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Sep 16, 2015
Assuming all windows servers belonging to the WSFC are on the same subnet, will the AG listener become a single failure point in system if all Application servers connect to the AG through the listener? If the answer is yes, what are the options to resolve this issue?
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Aug 17, 2015
We have a requirement to build SQL environment which will give us local high availability and disaster recovery to second site. We have two sites- Site A & Site B. We are planning to have two nodes at Site A and 2 nodes at Site B. All four nodes will be part of same Windows failover cluster. We will build two SQL Cluster, InstanceA will be clustered between the nodes at Site A Server and InstanceB will be clustered between the nodes at Site B, we will enable Always On Between the InstanceA and InstanceB and will be primary owner where data will be written on InstanceA and will be replicated to InstaceB. URL....Now we want we will have instanceC on the Site B and data will be writen from the application available on Site B, will be replicated to the instance on the Site A as replica.
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Sep 17, 2015
Pages on a full recovery model database corrupted, need to ensure data loss is minimal for restore operation am thinking about restoring the latest full backup.
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Nov 10, 2006
I'm running SQL Server 2005 on a Server 2003 machine serving both our home network as well as a remote site through a point-to-point T1. While file transfer speeds are up to par, the remote site's interaction with SQL Server (Point of sale system) is very slow. After testing I am certain that it has nothing to do with the actual physical machine in place neither is it an issue with the program itself since speeds are as they are supposed to be over the home network lan. It seems that there might be a packet size issue or something of the sort. Has anyone dealt with this before or have any thoughts?
Thanks,
Peter
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May 5, 2015
in the process of migrating a big db from server 1 to server 2, we had to roll back the change. I started with taking a full db backup and restoring it on server 2 with norecovery, and then a couple logs with norecovery, and then the last log with recovery.
Is there some way to continue this chain now, I mean to change the db to norecovery, or other way to restore logs.Â
I dont want to do a new full backup.
If I try to do a log restore now i get the message:
Msg 3117, Level 16, State 4, Line 1
The log or differential backup cannot be restored because no files are ready to rollforward.
Msg 3013, Level 16, State 1, Line 1
RESTORE LOG is terminating abnormally.
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Sep 19, 2015
We have 3 replica AG setup. 2 replicas are in sync/automatic failover, the other(DR Server, different subnet) in asynchronous/manual mode…All these replicas were on sql server 2012, Recently we upgraded DR server to 2014. Since then we have a problem, the AG databases in 2014 instance went into ‘Synchronizing/ in recovery’ state…The SQL server error log has message, the recovery couldn’t start for the database ‘XYZ’…We tried to create a new database and add it to AG , it works for fine for other two 2012 replicas, but on 2014 we see the same issue
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Nov 1, 2015
We have an issue with a 3 node SQL 2012 Always on availability group. Normal operation is node 1 (primary replica) with node 2 and node 3 as secondary replicas.After some patching, SQL wasn't running on node 1 hence the AG flipped over to node 2. This went unnoticed for some time and the transaction log for one of the AG databases became full on node 2 and node 3. (I think this is because it couldn't commit the transactions on node 1 so couldn't truncate it's t-log?) The DB is using synchronous replication btw.So I started SQL on node 1 and flipped the AG back to node 1 (with a data loss warning but I accepted this).Now the issue is that on node 2 and 3, the DB in question is stuck in a "Reverting / In Recovery" State. I've tried various commands such as ALTER DATABASE SET ONLINE, RESTORE DATABASE WITH RECOVERY etc but these fail stating unable to obtain a lock on the DB.
The weird thing is that on node 1 the state of the DB is "synchronised".how to resolve this issue on node 2 and 3? I've left them overnight (in case they were rolling back transactions, the DB is fairly large) but nothing seems to have happened. remove the DB from the AG in node 2 and 3 and add it back in again, ie recreate the replication?
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Sep 10, 2015
If you are doing a disaster recovery of an entire SQL 2005 cluster, can you just install SQL server and restore the system database to get the configuration?
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May 21, 2008
I normally develop for MySQL and PHP, but we have a new application that runs on MS SQL and I'm having difficulty using the same structure as MySQL to run queries. Can someone here point me to a good resource to learn the basics?
Thanks!
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Oct 26, 2005
Hi there.
Is it possible to convert the Power Point file to SQL Server Version 7 or 2000? My PowerPoint files have no images or pictures, only lyrics for songs that are used in the church during sunday services.
I was appointed to make a system in VB6 but my first job is to convert the PowerPoint files to SQL Server. There are 2000 songs in the powerpoint right now.
Please help.
Thanks.
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Feb 11, 2007
Hello, thanks for reading this.
I am trying to learn a bit about debveloping my own website, and I am in need of a basic direction on how to acomplish this task:
I have an local program running on my PC that creates an MS Access database export of my inventory. This export can be directly uploaded to my web server in a zip format.
My web site is developed in Coldfusion MX7, and uses a MS SQL 2005 database. What I would like to do is create somewhat of an "Auto update" for my website, exporting my access database and updating the MS SQL database automatically.
I really can use some good direction on this problem.
Thank you for any help in advance.
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Mar 19, 2007
i have a DTS Package a saved when i set up the package. it's in local packages in Enterprise Manager now. is there any way i can simply set up a shortcut on my desktop to execute that DTS, rather then having to nav though Enterprise Manager?
yeah, i know i'm lazy :o)
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Nov 24, 2007
hi.
i am a c++ developer who requires to learn sql.
i have no other programs than the sql server that comes with visual studio pro 2005.
what
do i need to get/do to create a sql databse and to manipulate it in c++.
thank you.
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Jan 21, 2008
I need to write a floating point value to a column in a SQL server database. I have the following line ofcode, that formats the float value before passing it off to the stored procedure.
Please look at the line of code below. Does the 8 after SqlDbType.Foat mean that this will be a floatingpoint with 8 signigicant digits past the decimal point?
mySqlCommand.Parameters.Add("@Price", SqlDbType.Float, 8).Value = float.Parse(InitialPrice);
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Apr 11, 2005
Hi all,
I want to select a column which is store email address. How to use the substring function from starting point '@' to end of string?
Here is my syntax :
select substring(emailaddress, [what syntax] ,len(emailaddress)) from table
Thanks!
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Nov 9, 2001
Hello all,
I can't see any reason for this error, not having a high level understanding of maths I thought I'd post it and hope someone could share some light on it.
I yesterday got called by a client who said that a payment for £15 + VAT was being passed to their payment gateway as 17.62 when it should be 17.63. The VAT calculation is performed in a SQL Server 2000 stored procedure. In the end I tracked it down and it wasn't a propblem with my calculation.
The price was coming out as 17.63 fine. The stored procedure then had to return this price in pence (17.63 * 100 = 17.63). When I put in a print statement with this calculation it was correct but when I output the variable that the result was assigned to it was coming out as 1762.
The variable that the result was being put into was of real datatype.
I then wrote a udf to test this. Here is the function:
CREATE FUNCTION dbo.POUNDS_TO_PENCE
(
@POUNDVALUE real
)
RETURNS INTEGER
AS
BEGIN
RETURN @POUNDVALUE * 100
END
As you can see nothing very special.
If you run this runction and pass in 17.63 it will return 1762!!!
The bit I don't get is if I change the @POUNDSVALUE intput variable to type float it returns the correct amount.
I've also found that the same problem occurs when passing in £30 + VAT (35.25) + 1pence. So, 35.26 comes out as 3525 instead of 3526. This is the case if you keep doubling the number (and adding a few pence here and there).
Does anyone know why this is or is it a bug in the processor?
The SQL books online say the following about the float and real data types:
--------------------------------------------------------
float and real (T-SQL)
Approximate number data types for use with floating point numeric data. Floating point data is approximate; not all values in the data type range can be precisely represented.
Syntax
float[(n)]
Is a floating point number data from - 1.79E + 308 through 1.79E + 308. n is the number of bits used to store the mantissa of the float number in scientific notation and thus dictates the precision and storage size. n must be a value from 1 through 53.
n is Precision Storage size
1-24 7 digits 4 bytes
25-53 15 digits 8 bytes
The Microsoft® SQL Server™ float[(n)] data type conforms to the SQL-92 standard for all values of n from 1 to 53. The synonym for double precision is float(53).
real
Floating point number data from –3.40E + 38 through 3.40E + 38. Storage size is 4 bytes. In SQL Server, the synonym for real is float(24).
--------------------------------------------------------
Apart from the fact that it says 'Approximate number data types' I can't see any difference between the data type apart from the ranges.
Anyone any ideas?
Thanks
Tom Holder
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Dec 8, 1999
I can't "point in time restore" a test DB if I had only a Full DB Backup (with overwrite option).
Example
12:00 Fullbackup new (overwrite)
12:01 update any rows
12:02 update any rows
12:03 delete any rows
12:05 Transaction Log backup (overwrite)
RESTORE: We can't set "point in Time" to 12:01 od 12:02 ???
why
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Mar 13, 2000
Hi
1. could any one explain point in time recovery.
2. Problem we had was the database froze 'inload' while doing transaction restore. Is there any way to recover this
regards
rajeev
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Aug 31, 2005
Hi, I am pretty new to Analysis Services and I have come across a small problem to do with point in time balances, I guess that this is similar shiver72's post titled 'Date Range Problem'. I am not really after a solution as such (although that would be great :-), more interested in a pointer to some resource(s) which I can read up on myself.
Here is the scenario:
A student enrols into a course that has a start and finish date. This enrolment has a certain value based upon its length, the course type etc which means that each
enrolment's 'value' can vary at any time between the start and finish dates.
For example a student may enrol in a full year basket weaving course with a value of 0.0500, they then enrol in a part year course titled 'Dimensional Modelling 101' with a value of 1.000
...and their enrolments would look like this...
01-JAN-2005 31-DEC-2005 0.0500
02-JAN-2005 15-JUN-2005 1.0000
The client wishes to know at any point in time the 'value' of their enrolments. These values can vary due to a student starting or finishing their enrolment, withdrawing, having their
enrolment suspended etc, etc
Now, in the Data Warehouse Toolkit it mentions point in time balances in the 'Financial Services' section but it uses SQL to prove the point which is no use to me because I am using MS Analysis Services to dynamically create the result.
As it says in the book its no use creating a row in the fact table to represent the value for each day that the enrolment is in effect because with 400,000 enrolments that works out to over 140 million rows. The alternative is to create one row for each occurence of the variation in the value of the enrolment and then the facts would be completely additive and useful.
I would be looking at using something similar to the following:
fact table
----------
fkdate
value
fksudent
fkcourse
<possibly some degenerate measure like the UID of the course enrolment held in the source system>
dimensions
----------
Student - and of course a whole heap of related dimensions like gender, age, ethnicity etc
Course
For example given the above information the fact table would look like this:
(Student UID is 2005123, course UIDs are 1000 and 1001)
20050101 0.0500 2005123 1000
20050102 1.0000 2005123 1001
20050615 -1.0000 2005123 1001
20051231 -0.0500 2005123 1000
That way I can run a query at, say 15-JUN-2005 and sum the values and it will come out with the correct balance - and yes I know that this idea is straight out of the book :-)
OK, if you've read to this point then I take it that you are an extremely patient person and therefore will forgive my next question.
My question is this, my clients use simple tools like Excel pivot tables to gouge the information they want out of the warehouse, sure, I can write an MDX query to get a point in time balance (just as soon as I learn a bit more about it) but is there _any_ way/means/algorithm/trick/way to hold your head to one side, that I can use so that they can still just 'drag and drop' using the pivot table service as opposed to having to me having to create an MDX-based report for them ?
cheers
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Oct 27, 1998
The following SQL statement returns the correct totals except that
the total value is shifted on decimal place to the right. i.e. a real
total of 955.68 is displayed as 9,556.80. The total_ar field is a money type.
Any help would be appreciated.
Mark
/* AR report Total Greater than 365 days sorted by Dept */
select
a.dept as `Department `,
` A/R 365+ `=sum(case when datediff(day,c.bill_date, getdate()) > 365 then b.total_ar else 0 end)
from
hbm_persnl a, blt_billm b, blt_bill c,hbl_dept d,hbm_matter e
where
e.matter_uno = b.matter_uno and
a.empl_uno = e.bill_empl_uno and
b.bill_tran_uno = c.tran_uno and
b.ar_status = `O` and
e.status_code=`OPEN`
group by a.dept
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Apr 18, 2001
Hello folks,
The other day I was checking the dboption and I couldnt see the "Truncate log on Check Point" option in the dboption window. Wondering if i'm looking at the right place.
Appreciated, If any one point me where can I look for this.
Thanks,
Sindi
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