Transactional Replication performance

  • I need suggestions,tips to improve performance of Transactional Replication.

    • Data is about 132 GB.
    • Publisher and distributor are in Europe, both are on same server.
    • Subscriber is in USA.
    • Network connection between Europe and USA is not too good.

    Every time i have to "re-initialize subscription-> generate new snapshot"; It generates script quickly but stuck for hours to days on bulk insert from distributor to subscriber.
    It takes at least 2-3 days to complete.
    Is there any way to make it run faster?
    Thanks for your help.

  • SqlServerLover - Friday, May 5, 2017 2:58 PM

    I need suggestions,tips to improve performance of Transactional Replication.

    • Data is about 132 GB.
    • Publisher and distributor are in Europe, both are on same server.
    • Subscriber is in USA.
    • Network connection between Europe and USA is not too good.

    Every time i have to "re-initialize subscription-> generate new snapshot"; It generates script quickly but stuck for hours to days on bulk insert from distributor to subscriber.
    It takes at least 2-3 days to complete.
    Is there any way to make it run faster?
    Thanks for your help.

    With a slow network connection, it can be difficult to speed up the re-initalizations.
    Make sure you're only replicating the needed columns. Check the publications to make sure articles aren't in multiple publications, If you have large tables in the publications, consider putting them into their own publications to speed up snapshots. In general, look into whether multiple publications might help the re-initalization.
    You might also want to look into re-initializing from backups to see if that can improve things as well.

    Sue

  • I have a question. how often you need to re-initialize? Why u need to re-initialize? 

    If you really need to re-initialize very often then maybe You can try to use pull subscription and/or using FTP for snapshots.

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