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2   sql explore - replication
 

2 sql explore - replication

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2   sql explore - replication 2 sql explore - replication Presentation Transcript

  • Replication types
    Replication Monitoring Insights
    Distribution database
    Monitoring
    TimeStamp replication
    Insights
    Unused Section Space 1
  • Replication Monitoring Insights
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  • Replication Monitoring Insights
    Zakourdaev Maria| Infrastructure DBA | Conduit
  • What should be monitored
    Distribution database & queries
    Additional insights
  • Replication types
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  • Replication types
    Publisher
    Distributor
    Subscriber
    Snapshot replication
    Full data copy
    Subscriber
    Publisher
    Distributor
    Transactionalreplication
    Transactions
    Distributor
    Subscriber
    Publisher
    Merge replication
    Changes merged
  • Transactional replication
    Distributor
    Distribution Agent
    pull
    Distribution Agent
    push
    Log Reader Agent
    Subscriber
    Publisher
  • Monitoring
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  • What should be monitored ?
  • Undelivered statements
    Distributor to Subscriber latency
    Distributor
    Replication errors
    Publisher to Distributor latency
    Subscription statuses
    Distribution database sizes
    Log Reader Agent errors
    Subscriber
    Tables that are not replicated
    Publisher
    Distribution Agent errors
    Log files growth
  • Distribution database
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  • Distribution database & queries
  • MSarticles
  • MSpublications
    Keep the replicated transactions in the Distribution database, just-in-case, a new subscriber is added
  • MSlogreader_agents
  • MSlogreader_history
  • MSdistribution_agents
  • MSdistribution_status
  • MSreplication_monitordata
  • MSRepl_commands
  • Latency
  • TimeStamp replication
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  • TimeStamp table replication
  • Distributor
    Replicated timestamp table
    Compare
    Subscriber
    Table with timestamp
    Publisher
    Update every n sec
    SQL Agent Job
  • Insights
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  • Additional Insights
  • Replication Alerts
  • Capturing more information
  • Replicate schema only
  • Remove replication
    EXEC Sys_removedbreplication ‘Dbname’
  • Skip integrity errors
  • By trusting noone, you make your own decisions.
    So choose wisely because either way, there’s no one to blame around you.