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Replication Magic: Initializing From Backup

Replication Magic: Initializing From Backup. Robert L Davis. Who am I?. @SQLSoldier. 11+. www.sqlsoldier.com. Replication Magic: Initializing from Backup. Background Use Cases & Misconceptions Initializing from Log Backups Initializing from Filegroup Backups.

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Replication Magic: Initializing From Backup

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  1. Replication Magic:Initializing From Backup Robert L Davis

  2. Who am I? @SQLSoldier 11+ www.sqlsoldier.com

  3. Replication Magic: Initializing from Backup • Background • Use Cases & Misconceptions • Initializing from Log Backups • Initializing from Filegroup Backups

  4. Replication Magic: Initializing from Backup • Background • Introduced in SQL Server 2005 • Limited adoption for VLDBs due to lack of native compression • Should be widely used for VLDBs • Highly flexible

  5. Replication Magic: Initializing from Backup • Use Cases & Misconceptions • VLDBs • Myth: Cannot use compression in SQL Server 2005 • Myth: Must initialize with a full backup • Partial Database Replication • Myth: Must restore the whole database and then delete unwanted tables

  6. Replication Magic: Initializing from Backup • Initializing from Log Backups • Use case: set up log shipping then convert to transactional replication • Books Online correctly states: “… any recent backup can be used if it was taken after the publication was enabled for initialization with a backup.”

  7. Replication Magic: Initializing from Backup • Initializing from Filegroup Backups • Replicating select tables • Books Online incorrectly states: “A backup contains an entire database; therefore each subscription database will contain a complete copy of the publication database when it is initialized” • Can restore simply select filegroups • Partial database availability is an Enterprise-only feature

  8. Replication Magic: Initializing from Backup DEMO

  9. Replication Magic:Initializing from Backup Q&A

  10. Replication Magic:Initializing from Backup Thank You! Slide deck and code samples will be posted to my blog later tonight: www.sqlsoldier.com

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