Backup Strategy
Jul 23, 2005
I've recently inherited a position where I am responsible for the well-being
of some DBs.
2 (much) more important than others.
The current recovery model, from what I can tell, is to do a full db/log
backup overnight.
This .bak file is then written to tape as well as saved on the disk for 2
days.
Both these dbs are used fairly extensively 8-5pm and losing data would not
be good.
The db sizes are approx 5gb and 3gb.
This doesn't seem like the ideal situation to me. Everything I read tells
me... full backup periodically, differential nightly and transaction hourly.
Agreed?
If so then I have 2 questions:
1. Is the best way to do this via a maintenance plan or by scripting and
scheduling?
2. What, if any, overhead can be expected with regular transaction backups
during work hours?
A bit of a pointer to #1 would be appreciated also.
Thanks.
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Jul 18, 2000
Hi all,
Pardon me for asking a question that I know has been asked before. I need to develop a backup strategy for our SQL Server and I am looking for any help that anyone can offer including recommending good books for reading.
Thanks in advance,
Faustina
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Oct 18, 2000
In SQL Server 6.5, Is it generally better to dump the
transaction log first, then the database or to dump
the database and then run a dump 'tranlog with truncate
only' option?
Or, is this more a matter of personal choice?
Toni
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May 23, 2007
We are currently doing daily full backup of system & custom databases since database size is small. Is that good idea ? or better option would be weekly full & daily incrementatl ?
Do we need to do any special backup on system databases or transactional logs ?
Please advice
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Nov 1, 2007
Hi
I have concern about an sql server. The server has the operating system and sql server installed locally. The databases and transaction log files is stored on SAN. We used to have the database backup and transaction log backups stored locally on the server. We tape the database backup and transaction logs every 24h. If we lose the san and the server then we are stucked with no backup easily accessible. And on tape we loose of 24h data. We decided to put up stand alone server with no connection to the san and dump the backups file on this server. We also put a secondary server sql I case of emergency, to test backups and We are looking at the getting a mirroring or log shipping solution but we are not there yet, next year€™s budget. We still using some old server left from migrating to virtualization.
Then I read the €œPractical Troubleshooting The Database Engine book€? best practice not to avoid net work drive backups. Stuck aging. Back with the backup to local drive and robocopy them? Keep them on the network drive, start using? MIRROR TO in the BACKUP DATABASE? Today we are using the Backup Database Task in the SSIS.
Advice?
Regards
Johan
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May 21, 2007
I am running SQL Server 2005 x64 Enterprise under Window Server 2003 x64 Enterprise. After reviewing many posts and suggestions in this forum, I am developing a backup strategy that should include keeping my transaction log file in a manageble size.
Please examine the following proposed backup schedule and let me know if this is considered a sound plan. The scripts below will write to disk and each night and then be backed up to tape.
*** TASK 1 ***
Backup transaction log
/* This script backs up the DSS database transaction log to disk, overwriting any
previous backup
*/
BACKUP LOG [DSS]
TO DISK = N'g:mssqlackuplogdss_log.bak'
WITH
INIT
, NAME = N'DSS-Transaction Log Backup'
GO
*** TASK 2 ***
/* This script shrinks the DSS database transaction log file
*/
BACKUP LOG [DSS] with truncate_only
dbcc shrinkfile(DSS_log)
**** TASK 3 ****
/* This script backs up the DSS database to disk, overwriting any
previous backup
*/
BACKUP DATABASE [DSS]
TO DISK = N'g:mssqlackupdatabaseDSS.bak'
WITH DESCRIPTION = N'DSS Full Database Backup'
, INIT
, NAME = N'DSS - Full Database Backup'
GO
/* Backup validation to ensure the file is valid before storing it */
RESTORE VERIFYONLY
FROM DISK = N'g:mssqlackupdatabaseDSS.bak'
WITH FILE = 1
GO
*** TASK 4 ***
Update statistics on the DSS database
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Jun 15, 2007
This may seem like a silly question, but has anyone ever heard of a DBA or an Engineer deciding to not back up databases inside EM, and only relying on the RAID or third party software for redundancy?
SBS 2003 R2
SQL 2000
Veritas 8.6 open file agent, SQL agent, Exchange agent
Thanks for any input,
Rich
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Mar 2, 2007
Hi,
In my current organisation they are using SQL Server.
They are using TSM (Tivoli Storage Manager) to back up the server on a nightly base.
However I feel that this is not the correct way. Suppose I need some data back, I call technical support and they would restore the server. If another user made some changes to another database that day, he would lose his changes.
Of course they could restore a file but I am not sure if this is correctly. What will happen to the transaction log for example ?
My idea is that they should backup the database using the normal sql backup commando, dump the data to a folder and backup that folder.
Any suggestions please ?
Constantijn Enders
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May 4, 1999
Hi All,
Can any one help me with this..
I've a critical application that can't be stopped for a second.
I'd like to have an implementation that uses 2 sql 6.5 servers one as standby and
which is ready and up to date to take place and run instead of the master
server when it's down and when the master is back to work it's updated with the
data entered to the standby.
This process must be automatically to maximum extent.
Thanks
Mohamed
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Jun 14, 2007
My maintenance plans are starting to acting weird. I'm building a custom script to manage the database backups on my server, but curious if anybody has some sample work that will allow me to avoid re-inventing the wheel.
A couple of primary constraints:
I want to do a full backup daily (and only retain 1 day of full backups)
Transaction Log backups every 20 minutes
I'd like to loop through the databases on the server automatically to make this a little more flexible.
You have anything you'd like to share? Or, bits of knowledge worth sharing?
Please advise,
alex8675
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Sep 27, 2006
Hello.
I have only ever been required to take a full back up of my main prod database every night.
Now the times they are-a changing , and it is now required to be able to restore the database up to the last hour.
I've never really done much with tran log / differential backups so I'm asking for some advice as to what should be the best strategy. We are not a 24/7 shop we work from 6:30 am to 6:30 pm every day, so I thought:
Full backup @ 7pm
Backup tran log every hour after that starting @ 7am (as there are no changes overnight)
How does that sound? also when the tran log is backed up, is it truncated? Or do I need to shrink it? Basically I need to know what to do so it doesn't get too big!
Thanks
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Aug 16, 2006
I tried searching, but it appears the search is still broken.Some of you know my other posts.. pleading for help with a problem (that's really sort of fixed itself/not remanifested itself).Upon this whole ordeal I decided to re-evaluate my nonchelant backup strategy. Which currently is:Backup our DB daily w/ transaction logs. (overwrite the backup daily on the tape).Backup our DB weekly w/ transaction logs.I rotate the tape weekly, on Monday morning. So there is a weekly backup and the last backup from monday morning on each tape.Along with that I have some optimizations and shrinks I run. Reading through the SQL BOL. It seems my strategy is ok, however if we lost the db at the end of the day, we'd lose a full days worth of work.So. Here in lay the questions.The BOL states to possibly back up twice a week, with differential daily backups and 4 hour transaction logs (example).So, I sorta get that..I make a device, "COMPANY.BAK", which writes to my external 'tape' unit.I make a job to back up the complete DB on sunday. to "COMPANY.BAK". (Not sure if I tell it to truncate the transaction log?).I make another job to make nightly differential backups to "COMPANY.BAK" with the 'append to media' switch on.I make yet ANOTHER job to make a transaction log backup. Here's what I don't get. If I set this thing to run every 4 hours, since it's not a differential backup.. rather incremental.. doesn't it just overwrite itself each time? It doesn't append itself to the backup right? So how much data could be missing if the log is overwriting itself rather than appending to itself? Also, if I turn on truncate log on backup, aren't I missing possibly critical transactions from the log for a sucessful restore?I guess I'm a bit befuddled here.
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Jun 9, 2008
Hi,
I would like to have guide for backup
estore strategy for production DB..if i have to apply for high availability of production DB..
consider scenario ..Full backup every week, differential backups every 6 hours, and logs every fifteen minutes.
suppose my DB is crashed at 8:14 AM and my last logs were backed up at 8 AM then by looking above startegy then i lost my DB from 8 am to 8:14 am???? if not then where it shud find???
also looking above scenario by taking backup for such high frequency is it full my disk?? guide me pls...
T.I.A
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Jul 20, 2005
Hi,Could anyone tell me the backup strategy for a 1000GB database?Thank you!Peter Wang*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
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Jun 9, 2008
Hi
I have one query regarding backup
ecovery startegy
hi
I have Db with simple recovery model.. recently i updated my column without where clause now i need to recover all my original state of that column..i just have idea @ set DB recovery model to Full then take full back up and then take differantial back up and then take transactional log back up and restore it as full , diff and then most recent transactional log back up...but still i didnt get original state of that table column...
please guide me
T.I.A
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Jan 24, 2007
Real World: Backup Strategy and implementation, how?
A quote:
€œReal World:
Whether you back up to tape or disk drive, you should use the tape rotation technique. Create multiple sets, and then write to these sets on a rotating basis. With a disk drive, for example, you could create these back files on different network drives and use them as follows:
//servername/data1drive/backups/AWorks_Set1.bak. Used in week 1, 3, 5 and so on for full and differential backups.
//servername/data2drive/backups/AWorks_Set2.bak. Used in week 2, 4, 6 and so on for full and differential backups.
//servername/data3drive/backups/AWorks_Set3.bak. Used in the first week of the month for full and differential backups.
//servername/data4drive/backups/AWorks_Set4.bak. Used in the first week of the quarter for full and differential backups.
Do not forget that each time you start a new rotation on a tape set, you should overwrite the existing media. For example, you would append all backups in week 1. Then, when starting the next rotation in week 3, you would overwrite the existing media for the first backup and then append the remaining backups for the week.€?
I understand these concepts, however in €˜the real world€™ how do you go about implementing these jobs in SQL2K and how on earth do you schedule the tasks to overwrite, for example, week 1, when on week 3€™s rotation.
Could I have real world examples or scripts for the jobs that would carry out this task? It appears that whatever course you do, it does not fully cover the above, and I have only worked on my own and never with a DBA, so I have never seen this implemented in any environment.
I would like full details on this please, as I need to get my head around it.
Thanks
Neil
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Dec 19, 2007
We have a critical Production database on which we want to setup Log-Shipping. We have also purchased the Symantec NetBackup utility for taking Backup to Tape Drives.
We Know that there are some inherent problems with using Log-Shipping and a Backup Strategy together, and thus we were finding out various ways in which we can run both in tandem.
One of them was taking the Symantec Log backups with Copy-Only option.
The main problem with this is that the Symantec Backups becomes dependent on the Log-Shipping Backups and also most of their Log-Backups become useless. Also, we are not sure whether the utility allows Copy-Only backups
The second alternative was to disable the Backup job of Log-Shipping on the Primary Server and to use the Log-Backups done by the Symantec utility for performing the Restores on the Secondary.
Thus, if Log-Shipping is scheduled to run say every 4 hrs, and the Symantec Log-backup happens every 1 hour, then at an interval of every 4 hrs, the Restore Job on the secondary will pick up the 4 backups done by the Symantec Backup utility and Restore each one of them in sequential manner.
But, I guess it is not easy to have a manual Restore Policy in place.
I was really banking on this solution until I found that the Restore Job of the Log-Shipping setup is dependent on the Filename of the Transaction log file which the systems generates automatically, and it won€™t be easy to create a customized Restore Job on the secondary server which takes in all the Log Backups generated by the Symantec Backup utility and Restore the Secondary database.
Have any one of you ever face this issue? Would like to know what is the best way to keep both of them running together.
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May 11, 2006
We currently use a split-mirror backup strategy for our Sybase database, which has a "quiesce database" command to suspend all transactions. By quiescing the database before splitting the mirror, we suspend all transactions to ensure we get a stable backup of the environment. It works very well for us and I'm trying to understand how we could implement this with our SQL Server 2005 DB.
(I'm aware of SQL Server mirroring and that there are other ways of possibly backing up the DB. In this post however, I'm only interested in how I would make the split-mirror strategy work if I wanted to pursue it. I'm trying to avoid paying for software that uses the VDI as it's quite costly.)
Can someone help me with how I would accomplish a split-mirror backup strategy in SQL Server 2005 (without using a vendor's software that uses the VDI)? I have to imagine there's something similar to the "quiesce database" command in SQL Server...
I appreciate the help!
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Oct 2, 2014
I have a scenario where a customer is going to be using Log Shipping to the DR site; however, we need to maintain the normal backup strategy on the current system. (i.e. Nightly Full, Every 6 Hour Differential and Hourly Transaction Log backup)I know how to setup Transaction Log Shipping and Fail-over to DR and backup but now the local backup strategy is going to be an issue. I use the [URL] .... maintenance solution currently.
Is it even possible to do regular backups locally keeping data integrity for your backup strategy with Transaction Log Shipping enabled?
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Jun 1, 2007
I am running SQL Server 2005 x64 Enterprise under Windows 2003 x64 Enterprise. My current backup strategy uses T-SQL jobs run by SQL Agent (writes out *.bak files) and then I have an Integration Services job that copies the *.bak files to our NAS device. I have performed a restore without issue. The jobs are all automated every four hours via SQL Agent. Is this a sound strategy or are there additional benefits to using 3rd party tools? If so, what are the advantages and which tool provides them?
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May 30, 2006
Hi guys.
I am currently developing a system thats stores exchange stats in a db. Since our customers are companies with 20 employees up to 5 000 there a a big difference in the volume of data needed to be stored.
We currently thinking of supplying a SQL Server Express DB to the small customers and suggest a SQL Server to the bigger.
But since I would like to use the same structure for both types of customers I wonder how should i design the storeage.
Since the could be from 500 records a day up to 20 000. There are quite simple recordes with only simple datatypes. about 15 fields with no more than 10 chars each, mostly 2.
Should i separate the data in diffrent tables for a week or a day etc.
Since I am only going to filter data on 1 or 2 fields the data will be easly indexed.
The reports generated will almost always only use 1-3 months of data, but historical reports have to be possible.
My question are ofcourse:
Whats the best solution for me?
Thanks in advance:)
/Johan Wendelstam
Sweden
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Jun 12, 2006
I have a bit of a problem with regards an indexing strategy. Well,basically there is no indexing strategy on a set of data I have atwork. Now, I didn't create the design as I would have allowed for this.OK, so there is primary key (clustered) indexes (mainly compositekeys), but no other indexes on the tables. As you would expect, theperformance leaves a lot to be desired. A hell of a lot. We haveseveral million rows in a lot of the tables. None of the queries seemto be overly complex so we can work through the applications at a laterstage.We have multiple copies (one per client per country) of the samestructure (I may have considered combining these to allow betterperformance). One specific SP that I need to run takes 40+ hourswithout indexes and 5 hours with some (130) basic indexes to get usstarted on a better design. These 130 indexes are the minimum I suspectwe need and from there, we can start to work out which ones we need.Now the test database (our worst performer) doubles in size to 20Gb,but the performance is much much better (as expected). The originalthinking behind the design was for storage concerns (server spacerecently upgraded) and for performance with bulk inserts.We have a lot of bulk inserts, but I suspect that these are not toobad, and the time taken for indexing these is negligable due to theperformance gains. I strongly suspect that we have a considerableamount of table scans going on, but the problem is that people heredon't understand indexing (yet) or have the time (probably because it'sall taken up using the poorly designed system). That's a whole seperateissue for me to address.So, finally getting round to my questions...Is there any good reference explaining in Layman's terms why you needbasic (or advanced) indexing ? Any links would be appreciated. I needthis to help explain to colleagues why a disk space increase andindexing will be far better than spending thousands on a new box anddoing the same (a common problem I suspect).How can I accurately estimate the amount of time taken to update anindex once data is bulk inserted. I don't want to re-index from scratchas this may take too long. Indexing my database first time round takesabout 1 hour 30 minutes.It's all part of an ongoing bit of digging into the system and re-doingit to make it work properly. I'm sure most of you will have been thereat some point or another.ThanksRyan
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Apr 23, 2008
Currently I have 1 server running MSSQL 2005 Standard. There is no redundancy in my current solution. I'm working on a project that involves a separate installation. I have 3 goals:
1) Provide redundancy for the new installation
2) Provide high availability for the new installation
3) Provide reduncancy for the current installation
Here's what I'm thinking about doing:
1) Purchase 2 servers and a Dell MD3000i ISCSI storage box. Cluster the servers and install SQL Server on the cluster.
2) Install SQL Server on an existing box (single CPU license) for backup purposes. Enable log shipping from the new cluster to the backup server.
3) Enable log shipping from the existing installation to the backup box.
I've also though about offloading some of the static pricing operations to the backup installation. This would free up my existing installation to deal with the changing data.
A couple of questions:
-How does this strategy sound? Are there any configuration problems with it?
-Can I legally use a development edition for the backup installation (if all I do is log shipping to it)?
Any other comments are welcome.
Thanks!
Brian
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Apr 22, 2007
I have been developing a genealogy application using a SQL Server 2000 database and ASP .NET 2.0. In this application a process, Ged.Parse, converts data from the GEDCOM standard format (a heirachical file format that looks as if it was designed for 80-column cards) into my SQL Server database.
As we started to load reasonable quantities of data into the system we found that the on-line response became abysmal. This problem was fixed by defining a number of secondary indexes (response times dropped to under a second, from previously exceeding 2 minutes and often timing out). Unfortunately however the processing time of Ged.Parse then tripled, and it may now take up to an hour to process a GEDCOM. I believe that this is a byproduct of defining several indexes that are not needed by Ged.Parse itself, but which are of course maintained as Ged.Parse inserts new records into the database.
I am wondering what my best strategy is, apart from putting Ged.Parse into a background task and just letting it trickle away. (I will probably do this anyway). What I'd like to be able to do is to have Ged.Parse load records without creating the secondary indexes, and then create the indexes for the newly-added records as a penultimate step just before it makes them available for general use. Of course there is no way that you can do this: records in a table are either indexed or they are not.
Proposed change: recode Ged.Parse to load data into temporary tables, say NewPeople, NewFacts, etc., with these tables having only the indexes required by Ged.Parse. Then, as the last process in Ged.Parse run a SQL procedure with code like: - Insert into People Select * From NewPeople Delete from NewPeople etc
This is a reasonable amount of programming, so before I make this change could somebody tell me: will this be significantly faster overall, or is this likely to make little or no improvement compared to the present process in which Ged.Parse loads data directly into People, Facts, etc? Two facts that may influence the answer. First, all record relationships are through GUIDs, so records in NewPeople, NewFacts, etc would already have their final key values. Second: although Ged.Parse needs to form relationships between records, these relationships are only within the new records (created from the same GEDCOM), and Ged.Parse does not need to relate any of these new records to earlier records.
Thank you,
Robert Barnes.
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Nov 27, 2000
Hi!
It would be very nice if some people out there, using
merge replication can tell me their strategy to get
started with a new subscriber. Is it a good way to copy
a publisher backup to the new subscriber and restore it
there and say that schema and data is already here when
creating the subscription?
I experienced some troubles when I tried to add a new
subscriber and used the initial snapshot transfer to
get the db to the new sub. (no defaults are transferred...???)
Or is it even better to use DTS?
I'd also be very grateful forinformations about RESCUE
STRATEGIES in case of a major database problem of replicated
databases!
Hoping for some answers. TIA & Best Regards
Gert
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Oct 22, 2004
I am using SQL Server 2000 and trying to create a disaster recovery strategy that would run nightly and backup the database or at least the changes and would ftp these to a secure ftp site. For smaller database it is easy, I just take a full backup, zip up the file and ftp it to the secure backup site. This strategy does not work so well when the zipped up database is still close to 3GB. I have a pretty big window for doing everything but 3GB is just too much to ftp overnight. The recovery model is simple so the only other option seemed to be do a full backup once a month and take differentials nightly. The problem is I am offsight and the client may need to take a full backup during the day and my nightly differential would get screwed up.
There is a fairly low volume of transactions so the idea of just doing nightly backups on the data that has changed is the obvious choice but differentials don't seem to fit. Any ideas?
Thanks,
TH
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Oct 20, 2006
Hi Folks,
The Need : Refresh a part of local database daily from remote server.
Assumption : All updates in remote are updated in local db as well.
Need inputs on the type of strategy
1) Take full backup of remote, refresh on local
( Downside for us is Network and disk space )
2) DTS ( refresh only the objects required )
Looks good to us but does it take care of my assumption ?? Your suggestions welcome .. I may be wrong
3) replication ( Dont want it implement on the already complicated sceanrio ... so I'll pass)
4) Standy databases ( ??? Any help on this)
5) Any other
Thanks so much,
Warm Regards,
Ranjit.
--------------------------------------------------------------
The best moments of my life are often things I get paid for
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Apr 18, 2008
Hi,
I have just created a logging table that I anticipate to have 10's of millions of rows (maybe 100's of millions eventually).
Basically its a very basic, narrow table, we are using it to log hits on images for a webserver.
My question is that we want to run queries that show how many rows are shown per day etc, however we want to make sure these queries which we are anticipating to be very heavy, do not slow down the system.
I have been recommended to have a seperate database (mirror/replica) for reporting so that the performance of regular activity will not be affected.
I assume this means I would need another server for this other database?
I am thinking there are probably some alternative solutions to this as well. Getting a dedicated server just for these queries really isnt an option.
In order to improvement it is not a problem to make some sacrifices. For example, having the data update every 15 minutes is more than acceptable.
I see certain websites I use employ this strategy of making data update every 15 minutes, but I am unsure what is likely going on behind the scenes. Also the queries are lightening fast when run. I am thinking that they have some sort of table that is populated with some computed data, so its quick to query.
Any thoughts or suggestions to give me some direction, are very much appreciated !
thanks once again,
Mike123
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Oct 7, 2005
My SQL acumen stems from just a couple courses, and everything since fromthe trenches. Fun + angst over time.I'm needing some advice on joins. Though I understand the basics, I'mhaving problems abstracting from instances where it's easy to think aboutdiscrete key values (. . . and studentid = 1234) to entire sets of users,with the joins doing their work.For example, currently I'm going nuts trying to return dates for whichattendance has not been taken for students, but should have been. Studentshave active and inactive periods of enrollment in our schools, so we have ahistory table of when they were active and inactive -- as well as two moretables that layer other bounds on eligible dates (what range of dates fallwithin a given school's term? What of holidays and staff institute days?).I also have a populated calendar table, and a table where students areidentified. Finally, there's a site history table which is a REAL pain inthe butt for me to think about.CREATE TABLE Student (StudentID int IDENTITY(1,1) NOT NULL,CurrentStatus varchar(2) NOT NULL)CREATE TABLE Calendar (Dateid int NOT NULL,Date datetime NULL,Workdaybit NULL )CREATE TABLE DailyAttendance (StudentID int NOT NULL,AttendanceDate datetime NOT NULL,SiteID varchar(6) NOT NULL,Attend_Status varchar(2) NOT NULL)(the last field is, e.g., present or absent)CREATE TABLE StudentActivityHistory (StudentID int NOT NULL,StatusStartDate datetime NOT NULL,StatusEndDate datetime NULL,Activity_Statusvarchar(2) NULL,StudentStatusHistoryIDint IDENTITY(1,1) NOT NULL)(the activity_status is either A or I; the important records in this tableare the 'A' records. A student's most recent status record always has anend date of '12/31/9999 12:00:00 AM', whether that's an A or I record. Nodates not between start/end dates of students' A records would needattendance taken. students may have many periods of activity -- A records-- as well as many inactive periods.)CREATE TABLE SiteTerms (SiteID varchar(6) NOT NULL,Term varchar(3) NOT NULL,StartOfTerm datetime NOT NULL,Quarter varchar(2) NOT NULL,SchoolYear varchar(9) NOT NULL,EndOfTerm datetime NOT NULL)(different schools vary their term start and end dates. No dates notbetween term start and end dates would need attendance taken by studentsassigned to and active in that school during that period.)CREATE TABLE SiteExceptionDays (SiteID varchar(6) NOT NULL,SchoolDayStartTimedatetime NOT NULL,SchoolDayEndTime datetime NOT NULL,SchoolDayType varchar(2) NOT NULL)(there are two kinds of days -- partial attendance, and no attendance. Inshort, if the type of day is "N" no attendance needs to be taken forstudents assigned to that school and active on that day)CREATE TABLE StudentSiteHistory (StudentID int NOT NULL,SiteStartDate datetime NOT NULL,SiteID varchar(6) NOT NULL,SiteEndDate datetime NULL,StudentSiteHistoryIDint IDENTITY(1,1) NOT NULL)(Pain. The attendance table tells which site a student was assigned whenattendance was taken. To find which school a student was a assigned to ondays attendance was NOT taken, this table's implicated 'cause it's the onlyway of connecting everything else together)Dangitall, I know this can be done but I've beat my head against the wall.Due diligence has gotten me a headache and a hankerin' for whiskey, and I'mnot much of a drinker. Is there anyone in the group for whom this kind ofthing is a no-brainer? I'd just as soon get some tips on how to approachthis kind of thing, and figure it out myself with some guidance.Any takers? Gotta run, dang I'm late for something.TIA--Scott
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Apr 3, 2008
hello all , I need help to implement this package that will update/add/delete a row from one table to another.
I€™m trying to create this package:
Insert an entire row using SSIS from one table to another based on condition:
A for add, D for delete, C for change
MASStable
Column0
FirstName
Lastname
,MiddleName
A
John
daniels
D
sarah
jones
G
C
yann
coleman
J
daniel
lope
If column 0 = €˜A€™ in masstable add entire row to Deathtable
If column 0 = €˜D€™ in masstable Delete row from Deathtable where Masstable.LastName = Deathtable.LastName
If column 0 = €˜C€™ in masstable Update row (some columns) where Masstable.LastName = Deathtable.LastName
If column 0 = €˜ €˜ no tasks..
This is my mastertable
Deathtable
Column0
FirstName
Lastname
,MiddleName
Juan
danring
sarah
jones
G
yann
coleman
daniel
lope
Do you have a hint.?
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May 7, 2007
Hi all
My company is going to open new working centers on different locations of my region. One of the problems we are suffering is that at some locations, the network communications infrastructure is very very very poor. So, in that locations we work with low bandwidths, and connections usually break down.
Because of this, we are thinking in distributing our database. I have been doing some tests on replication, reading the docs, etc... But I am still not sure which replication strategy should we use, and how to organize our database tables to allow replication work properly.
Our offices are going to share some data (a product catalogue, for example) which could be updated an queried from any of the offices. But there is also data which is not going to be shared, as product stocks for each location.
We were thinking on using transactional peer-to-peer replication. But now we are having serious doubts about this since in a previous post (http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1525643&SiteID=1) we were told we can't store non-shared data (stock) in the same table as the shared data (products) due to how database behaves when a publication is restarted. We know it would not be usual to republish, but we were thinking on crash recovery.
It would be fantastic if somebody could help us to decide what should we do to organize our database to allow the use of a proper replication scheme.
Thanks in advance,
Rubén D. M.
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I have an exception occur when the "open" method is called on the connection object. Although I have this within a try/catch block, it doesn't get caught by the SqlException block and instead only gets caught by the "catch all" exception block at the bottom. I know that method is causing the problem because I set the text of an asp:label element at several places in the script to find out where the exception is being thrown. Shouldn't this be caught by the SqlException block.
Does anyone have any ideas why this might not be getting caught?
Thanks for any thoughts.
Jeff
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Nov 20, 2007
I need to manage the problem of negative performance implications when I fragment a 1TB+ DB. I want to perform Index Reorganization if fragmentation is no higher than 30%, and Index Rebuild if the fragmentation exceeds 30%.
Firstly can anyone recommend a script which uses sys.dm_db_index_physical_stats system to ascertain the
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ALTER INDEX REORGANIZE/REBUILD WITH (ONLINE=ON)
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