Allways available DB

  • Hi,
    Our DataMart (SQL2014 Enterprise) will completely deleted during etl-load from DWH several times a day (=>drop database, create table... and load from DWH). During this time (about 15 minutes) there is no database available for the consumer. Which solution is suitable for this - fast, uncomplicated and easy to maintain, Connectionstrings, same Server/Instance. (Backup/Restore ... Log Shipping ... a.s.o)
    Thanks
    Regards
    Nicole 🙂

  • Leave the current DataMart online while you prepare the new one:
    - Create a new database on the DataMart
     - ETL-load that database from your DWH while the current database is still online
     - Drop the previous database and rename your new one to the old name.

    There's still downtime, but you could shrink it to a few seconds this way.
    This will require more storage for the extra database, but shrinking outage windows is rarely free.

    Eddie Wuerch
    MCM: SQL

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