How to Take Incremental Backup in sql server

  • Hi

    How to Take Incremental Backup in sql server

    Is this new Option in SQL server ?

    Thanks & Regards

    Ghanshyam

  • gupta1282 (9/7/2009)


    Hi

    How to Take Incremental Backup in sql server

    Is this new Option in SQL server ?

    Thanks & Regards

    Ghanshyam

    Are you referring to differential backup or log backup?



    Pradeep Singh

  • Hi, not new....

    Using the GUI to do backup, or configure the backup task in SSIS, specify to do 1) Full 2)Differential Backup.....

    Short "how-to" - easy way...

    1. Right Click your db in SSMS

    2. Focus on "Tasks" -> "Backup"

    3. on the general screen, look for: "Backup Type"

    4. Select your backup type: Full or Differential etc....

    and the rest of the criteria and file locations you need to modify as you need it...

    Hope this helps....

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    This thing is addressing problems that dont exist. Its solution-ism at its worst. We are dumbing down machines that are inherently superior. - Gilfoyle

  • Hi

    This is not new to SQL2005.....

    Easy way to do a Differential Backup..

    1. Right click on you DB in SSMS

    2. Focus on "Tasks" then -> "Backup"

    3. In the Backup Type select 1) Full or 2)Differential.

    4. Configure rest of the settings like file location etc....

    You can also do this in SSIS using a Backup Database Task Step.

    Hope this helps?

    -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
    This thing is addressing problems that dont exist. Its solution-ism at its worst. We are dumbing down machines that are inherently superior. - Gilfoyle

  • Hi

    I know about Differential backup.

    but the question asked by interviewer was "What is difference between differential and incremental backup in sql server". I have not heared about incremental backup and had no idea how to take this type of backup in sql sevrer because i have not seen this option in sql server yet.

    Can anybody tell me where is this option in sql server ?

    Please help me.

    Thanks & Regards

    Ghanshyam

  • i think the answer to this question will be "both are same".



    Pradeep Singh

  • A differential backup contains all the changes since the last full backup.

    An incremental backup contains all the changes since the last incremental backup (or the full, if no incrementals have been taken yet).

    Incremental backups are additive - you have to restore all of them to get back to where you started.

    You can only restore one (complete set of) differentials (plus most recent log) to get back to where you started.

    SQL Server does not support true incremental backups (I mean just pages which have changed since the last incremental).

    The closest to it would be a series of log backups, I guess.

  • Differential backup is good up to the last full backup.

    Incremental (transaction) backup is good up to the last incremental or full

    backup.

  • There is nothing called incremental backup in sql server.

    There are 3 types of backup

    1)Full

    2)Differential

    c)Transaction Log

    Syntax:Full

    Backup database database_name to disk='Physical location' with stats=10

    Syntax:Differential

    Backup database database_name to disk='Physical location' with stats=10 with differential

    Syntax:Transaction log

    Backup Log database_name to disk='physical location' with stats=10

  • The Ans will be same...

    Differential backup takes place after the full backup, what are the changes happend, those changes

    are stored in the DCM pages. Differntial backups will backed up those DCM pages.

    next we will have to go for differntial backup then i will backup the data from full backup anwords...

    thats way the differential backup is called it as Incremential backup...:-)

  • usually differential backups treated as an incremental backups..i don't think both are different..

    In sql server if anything modified after taking the fullback it will be recorded in page as 1(indication symbol) in differential change map(DCM)..

    Those ones are never changed until u take the full backup again...So last differential backup enough for restore becoz it's having the all the increments since the last full backup..

  • usually differential backups treated as an incremental backups..i don't think both are different..

    In sql server if anything modified after taking the fullback it will be recorded in page as 1(indication symbol) in differential change map(DCM)..

    Those ones are never changed until u take the full backup again...So last differential backup enough for restore becoz it's having the all the increments since the last full backup..

  • rocky@123 (11/10/2011)


    usually differential backups treated as an incremental backups..i don't think both are different..

    Differential and incremental backups are different. SQL does not have incremental backups.

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

    We walk in the dark places no others will enter
    We stand on the bridge and no one may pass
  • GilaMonster (11/10/2011)


    SQL does not have incremental backups.

    Closest to it would be a log backup.

  • Incremental Backup = Transaction log Backup

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