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Asynchronous t sql

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Remus Rusanu
Remus Rusanu
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Asynchronous Procedures Reliable T-SQL invocation of procedures using Service Broker Activation Remus Rusanu
About Me ,[object Object],[object Object],[object Object],[object Object],[object Object]
Agenda ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Why Asynchronous Procedures ,[object Object],[object Object],[object Object]
Reliable Asynchronous Calls ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Service Broker Activation ,[object Object],[object Object],[object Object],[object Object]
Activation internals ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Activation Triggers After transaction commits During transaction Background connection Client connection EXECUTE AS context Login context When messages available On INSERT/DELETE/UPDATE Batch calls for set processing Each call is standalone Runs in a loop New instance every 5 sec Up to MAX_QUEUE_READERS Runs in each session that invokes it
Activation SQL Agent Jobs Internal to SQL Engine External process Agent Runs on demand Runs on timer Consistent backup/restore Backup split with msdb Mirroring failover No failover Available in every edition Not in Express editions For for many small jobs Better fit for few large jobs
Using Activation for code execution ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Required Infrastructure ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Asynchronous Execution Workflow ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Demo 1
Pass Parameters to procedures ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Invoke Arbitrary Procedure ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The Invocation Message ,[object Object],[object Object],[object Object]
Dynamic SQL for execution ,[object Object],[object Object],[object Object]
Demo 2
Activation context ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Resources and Q&A ,[object Object],[object Object],[object Object],[object Object]

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Asynchronous t sql

  • 1. Asynchronous Procedures Reliable T-SQL invocation of procedures using Service Broker Activation Remus Rusanu
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  • 8. Activation Triggers After transaction commits During transaction Background connection Client connection EXECUTE AS context Login context When messages available On INSERT/DELETE/UPDATE Batch calls for set processing Each call is standalone Runs in a loop New instance every 5 sec Up to MAX_QUEUE_READERS Runs in each session that invokes it
  • 9. Activation SQL Agent Jobs Internal to SQL Engine External process Agent Runs on demand Runs on timer Consistent backup/restore Backup split with msdb Mirroring failover No failover Available in every edition Not in Express editions For for many small jobs Better fit for few large jobs
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