all groups > sql server replication > july 2003 >
You're in the

sql server replication

group:

what are the replication commands and transactions delivered?


what are the replication commands and transactions delivered? Hassan
7/30/2003 11:02:11 PM
sql server replication:
What is the difference between commands and transactions that are delivered
by the log reader agent to the distributor ?

Re: what are the replication commands and transactions delivered? Narayana Vyas Kondreddi
7/31/2003 8:12:25 AM
The log readers is constructing individual SQL statements and delivering
them to the distributor, wrapping them in transactions. For example, you
execute the following DELETE statement on your published table:

DELETE dbo.Titles WHERE title LIKE 'DIY:%'

The above DELETE command deletes all titles that start with 'DIY:'. If the
above DELETE statement deletes 10 rows, then log readers interprets this as
1 transaction with 10 commands. So, on the distributor it inserts one
transaction into msrepl_transactions and 10 rows into msrepl_commands
tables.
--
HTH,
Vyas, MVP (SQL Server)
http://vyaskn.tripod.com/
What hardware is your SQL Server running on?
http://vyaskn.tripod.com/poll.htm




[quoted text, click to view]
What is the difference between commands and transactions that are delivered
by the log reader agent to the distributor ?



Re: what are the replication commands and transactions delivered? Hassan
7/31/2003 2:45:58 PM
So what does the distributor agent for trans replication do at this point ?
Does it fire just that 1 transaction or does it fire those 10 commands i.e.
10 deletes at the subscriber ?


[quoted text, click to view]

Re: what are the replication commands and transactions delivered? Narayana Vyas Kondreddi
7/31/2003 10:52:41 PM
The distribution agent intiates a transaction on the subscriber, and
executes 10 corresponding DELETE stored procedures or statements.
--
HTH,
Vyas, MVP (SQL Server)
http://vyaskn.tripod.com/
What hardware is your SQL Server running on?
http://vyaskn.tripod.com/poll.htm




[quoted text, click to view]
So what does the distributor agent for trans replication do at this point ?
Does it fire just that 1 transaction or does it fire those 10 commands i.e.
10 deletes at the subscriber ?


[quoted text, click to view]



Got something to say? Click here to post a reply to this thread.
Don't see what you're looking for? Try a search.
View other messages in the sql server replication group.
AddThis Social Bookmark Button
View Other Months
April 2003
June 2003
July 2003
August 2003
September 2003
October 2003
November 2003
December 2003
January 2004
February 2004
March 2004
April 2004
May 2004
June 2004
July 2004
August 2004
September 2004
October 2004
November 2004
December 2004
January 2005
February 2005
March 2005
April 2005
May 2005
June 2005
July 2005
August 2005
September 2005
October 2005
November 2005
December 2005
January 2006
February 2006
March 2006
April 2006
May 2006
June 2006
July 2006
August 2006
September 2006
October 2006
November 2006
December 2006
January 2007
February 2007
March 2007
April 2007
May 2007
June 2007
July 2007
August 2007
September 2007
October 2007
November 2007
home · blog · groups Questions? Comments? Contact the dn