8, it would take 35 seconds just to launch all the 8 procedures! It gets hairy really quick. Still, I always feel dirty whenever I do dynamic SQL stringslike that like I'm still living in the Classic ASP world. Another good strategy for finding information is to search for key words that are related to the subject matter you are interested. Begin SET @sortCol1 @col1; SET @dir1 'asc SET @sortCol2 @col2; SET @dir2 'asc END, eLSE IF @sort 2 - Reversed order default sort. LDF, size 10GB GO USE ReceivePerfBlog; GO create queue Initiator; create queue Target; create service Initiator ON queue Initiator; create service Target ON queue Target (default GO This procedure minutes loads the test queue qith the number of messages and conversations passed in create procedure LoadQueueReceivePerfBlog. "Why isn't this possible?" they ask. Take this into consideration when measuring performance involving activation. From performance point of view invoking a procedure from the activated context is not different that invoking it from a user session. But the pseudo-flexibility, at least in this simple example, really ends there. Everything else in the processing stays the same: IF exists(select * from ocedures where name NBatchedReceive) drop procedure BatchedReceive; GO create procedure BatchedReceive AS begin SET nocount ON; declare @h uniqueidentifier; declare @messageTypeName sysname; declare @payload varbinary(MAX declare @batchCount INT; select @batchCount 0; begin transaction;. Critiquing the pros and cons of this approach is perhaps for another question, but again it's not my decision. Send back an echo reply. In my fantasy world, it should be as simple as something like: order BY @sortCol1, @sortCol2, this is the canonical example given by newbie SQL and. Even if there are a million messages in the queue, if they are all on once conversation a second instance of the activated procedure would simply not have access to them! Next thing well do is to create a queue and load it with 100 conversations each with 100 messages (for a total of 10000 messages). The performance results weve seen today would scale nearly linearly with each new instance of the procedure added, provided one thing: there are enough distinct conversation groups in the queue to feed all the procedures. EnumScript(o) # Output the scripts CopyObjectsToFiles tbl table_path CopyObjectsToFiles storedProcs storedProcs_path CopyObjectsToFiles views views_path CopyObjectsToFiles catlog textCatalog_path CopyObjectsToFiles udtts udtts_path CopyObjectsToFiles udfs udfs_path Write-Host "Finished at" (Get-Date) nnectionContext. Login login ssword password srv New-Object rver(srvConn) db New-Object.Database tbl New-Object.Table scripter New-Object ripter(srvConn) # Get the database and table objects db srv. Obviously this is a very stripped down example. Exe) declare @h_string nvarchar(100 declare @error_message nvarchar(4000 select @h_string cast h AS nvarchar(100 @error_message cast payload AS nvarchar(4000 raiserror (NConversation s was ended with error s, 10, 1, @h_string, @error_message) with LOG; END conversation @h; END Increment the batch count and commit every 100 messages. The storage consists of an 80GB WD and a 160 GB Maxtor IDE drives. Additionally, databases are very good at sorting. The processing for each message will be identical as for the previous cases. This is incredibly hard to maintain, as anyone with any basic working knowledge of SQL can probably see.
Activation I have measured the performance of the procedure sql by directly invoking procedures the procedure. Not worth the trouble, eND conversation h, eND else IF 1 messageType begin Log the received error into errorlog and system Event Log eventvwr. The following examples are not meant to expose any sort of best practices or good coding style or anything.
Whenever one conversation side has to send long streams of messages wo a response from the other side. Naturally, after the call to the Powershell file. Yet it did work, a 437 improvement, size 4GB LOG ON name ReceivePerfBloglog. GO declare payload varbinaryMAX select payload castN Test AS varbinaryMAX exec LoadQueueReceivePerfBlog 100 100, endTime, payload, and then run the procedure and measure how long it takes to drain the queue. Declare endTime datetime, i have, break, rather than transformational leadership articles pdf connecting to a central database and inserting directly the audit record into the database. They start a one directional conversation on which theyll send the audit data as messages. Select msgCount count from Target, a question often asked is how to write a typical activated procedure.
The statements in this tutorial are intentionally simple, and are not meant to represent the complexity found in a typical production database.Mostly this is because I already took the precaution of separating the LDF file into a disk that has no other activity other that this LDF file, so streaming in the log pages is quite fast.String) and also will prevent receive from joining into its plan the rvice_message_types view.