sp_helptracertokens (Transact-SQL)
Returns one row for each tracer token that has been inserted into a publication to determine latency. This stored procedure is executed at the Publisher on the publication database or at the Distributor on the distribution database.
Transact-SQL Syntax Conventions
- [ @publication = ] 'publication'
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Is the name of the publication in which tracer tokens were inserted. publication is sysname, with no default.
- [ @publisher = ] 'publisher'
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The name of the Publisher. publisher is sysname, with a default of NULL.
Note: This parameter should only be specified for non-Microsoft SQL Server Publishers.
- [ @publisher_db = ] 'publisher_db'
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The name of the publication database. publisher_db is sysname, with a default value of NULL. This parameter is ignored if the stored procedure is executed at the Publisher.
sp_helptracertokens is used in transactional replication.
sp_helptracertokens is used to obtain tracer token IDs when executing sp_helptracertokenhistory (Transact-SQL).
DECLARE @publication AS sysname; DECLARE @tokenID AS int; SET @publication = N'AdvWorksProductTran'; USE [AdventureWorks] -- Insert a new tracer token in the publication database. EXEC sys.sp_posttracertoken @publication = @publication, @tracer_token_id = @tokenID OUTPUT; SELECT 'The ID of the new tracer token is ''' + CONVERT(varchar,@tokenID) + '''.' GO -- Wait 10 seconds for the token to make it to the Subscriber. WAITFOR DELAY '00:00:10'; GO -- Get latency information for the last inserted token. DECLARE @publication AS sysname; DECLARE @tokenID AS int; SET @publication = N'AdvWorksProductTran'; CREATE TABLE #tokens (tracer_id int, publisher_commit datetime) -- Return tracer token information to a temp table. INSERT #tokens (tracer_id, publisher_commit) EXEC sys.sp_helptracertokens @publication = @publication; SET @tokenID = (SELECT TOP 1 tracer_id FROM #tokens ORDER BY publisher_commit DESC) DROP TABLE #tokens -- Get history for the tracer token. EXEC sys.sp_helptracertokenhistory @publication = @publication, @tracer_id = @tokenID; GO
Reference
sp_deletetracertokenhistory (Transact-SQL)Other Resources
How to: Measure Latency and Validate Connections for Transactional Replication (Replication Transact-SQL Programming)Measuring Latency and Validating Connections for Transactional Replication
