<a href="http://g.adspeed.net/ad.php?do=clk&zid=15220&wd=468&ht=60&pair=as" target="_blank"><img style="border:0px;" src="http://g.adspeed.net/ad.php?do=img&zid=15220&wd=468&ht=60&pair=as" alt="i" width="468" height="60"/></a>
Log in
::
Register
::
Not logged in
Home
Tags
Articles
Editorials
Stairways
Forums
Scripts
Videos
Blogs
QotD
Books
Ask SSC
SQL Jobs
Training
Authors
About us
Contact us
Newsletters
Write for us
<a href="http://g.adspeed.net/ad.php?do=clk&zid=15491&wd=120&ht=300&pair=as" target="_top"><img style="border:0px;" src="http://g.adspeed.net/ad.php?do=img&zid=15491&wd=120&ht=300&pair=as" alt="i" width="120" height="300"/></a>
Recent Posts
Recent Posts
Popular Topics
Popular Topics
Home
Search
Members
Calendar
Who's On
Home
»
SQL Server 2008
»
SQL Server 2008 - General
»
Concerns with Transaction replication...
Concerns with Transaction replication parameters
Rate Topic
Display Mode
Topic Options
Author
Message
baabhu
baabhu
Posted Wednesday, January 02, 2013 8:42 PM
Ten Centuries
Group: General Forum Members
Last Login: Thursday, May 16, 2013 2:55 AM
Points: 1,112,
Visits: 967
Hi SQL Experts,
We have an OLTP that was configured in P2P replication.
Both the peer nodes were running with SQLserver 2008 R2 SP1. We noticed that one of the DB we have a lot of latency issues and decide to change the readbatchsize from default 500 to 5000. it took 10 hours before we removed the latency. But on the other hand we are seeing a lot of messages in the log reader.
We are using push subscription.
" Approximately 500000 log records have been scanned in pass # 3, 1 of which were marked for replication, elapsed time 6006 (ms).'."
These messages popup every 10 or 15 mts time.
Is these message a real concern for us to look and reduce the readbatchsize parameter.
Will Readbatchthreshold is a better option than readbatchsize?
Can you help me?
Thank you
Post #1402157
foxxo
foxxo
Posted Wednesday, January 02, 2013 11:59 PM
Say Hey Kid
Group: General Forum Members
Last Login: Sunday, May 12, 2013 11:07 PM
Points: 693,
Visits: 1,027
Reduce your readbatchsize, it's too high which is why you're seeing the message:
http://www.sqlservergeeks.com/blogs/Abhay_c/sql-server-bi/455/sql-server-fine-tuning-transactional-replication-performance-part-1
I've read that changing Readbatchthreshold can cause very slow performance in 2008
http://connect.microsoft.com/SQLServer/feedback/details/478792/using-the-readbatchthreshold-parameter-in-logreader-agent-leads-to-slow-performance
Post #1402202
baabhu
baabhu
Posted Thursday, January 03, 2013 1:20 AM
Ten Centuries
Group: General Forum Members
Last Login: Thursday, May 16, 2013 2:55 AM
Points: 1,112,
Visits: 967
foxxo (1/2/2013)
Reduce your readbatchsize, it's too high which is why you're seeing the message:
http://www.sqlservergeeks.com/blogs/Abhay_c/sql-server-bi/455/sql-server-fine-tuning-transactional-replication-performance-part-1
I'm thinking of changing the readbatchsize parameter from 5000 to 1000. And see if that makes sense.
I've read that changing Readbatchthreshold can cause very slow performance in 2008
http://connect.microsoft.com/SQLServer/feedback/details/478792/using-the-readbatchthreshold-parameter-in-logreader-agent-leads-to-slow-performance
This connect I think is for SQL 2008. Our's is SQLserver 2008 R2 Sp1. This issue would have been resolved. The date of the issue reported is also in 2009. I assume the issue would have been resolved in SQLserver 2008 R2. Thanks for answering the post.
Post #1402218
foxxo
foxxo
Posted Thursday, January 03, 2013 6:36 PM
Say Hey Kid
Group: General Forum Members
Last Login: Sunday, May 12, 2013 11:07 PM
Points: 693,
Visits: 1,027
I'm interested to see if changing those values fixes your issues.
The connect item is old, but the Microsoft comment about readbatchsize being fixed in next release was on Feb 2011, after R2 was already released, so not sure if they're referring to R2 or 2012.
Post #1402632
« Prev Topic
|
Next Topic »
Permissions
You
cannot
post new topics.
You
cannot
post topic replies.
You
cannot
post new polls.
You
cannot
post replies to polls.
You
cannot
edit your own topics.
You
cannot
delete your own topics.
You
cannot
edit other topics.
You
cannot
delete other topics.
You
cannot
edit your own posts.
You
cannot
edit other posts.
You
cannot
delete your own posts.
You
cannot
delete other posts.
You
cannot
post events.
You
cannot
edit your own events.
You
cannot
edit other events.
You
cannot
delete your own events.
You
cannot
delete other events.
You
cannot
send private messages.
You
cannot
send emails.
You
may
read topics.
You
cannot
rate topics.
You
cannot
vote within polls.
You
cannot
upload attachments.
You
may
download attachments.
You
cannot
post HTML code.
You
cannot
edit HTML code.
You
cannot
post IFCode.
You
cannot
post JavaScript.
You
cannot
post EmotIcons.
You
cannot
post or upload images.
Copyright © 2002-2013 Simple Talk Publishing. All Rights Reserved.
Privacy Policy.
Terms of Use.
Report Abuse.
