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Reseeding Database Exchange 2010

Posted on 2010-11-29
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Last Modified: 2012-08-14
I am reseeding a database and the copy queue lenght just keeps increasing and never decreases. I am afraid it will never seed over properly. Any ideas?
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Question by:mnevoso
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26 Comments
 

Author Comment

by:mnevoso
ID: 34236370
update it keeps increasing...any ideas?
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LVL 31

Expert Comment

by:MegaNuk3
ID: 34236811
How big is the DB? What does Test-ReplicationHealth show you? Is the EDB on the destination server?
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Author Comment

by:mnevoso
ID: 34237993
20 gb.the edb is on the second server
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LVL 31

Expert Comment

by:MegaNuk3
ID: 34238220
Look at the copy queue length in perfmon

Are you running Exchange 2010 SP1?
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LVL 31

Expert Comment

by:MegaNuk3
ID: 34238235
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Author Comment

by:mnevoso
ID: 34239020
how do i check with perfmon?

yes i am running exchange 2010 sp1
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Author Comment

by:mnevoso
ID: 34239068
i just ran Test-ReplicationHealth  and the qurom failed, i checked and the DAG1 was offline. I brought it back online ran Test-ReplicationHealth  again and everything passed lets see if this works now.
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Expert Comment

by:MegaNuk3
ID: 34239286
Ok
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Author Comment

by:mnevoso
ID: 34239301
How do you check copy queue in perfmon
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LVL 31

Expert Comment

by:MegaNuk3
ID: 34239797
Start--->Run-->perfmon-->monitoring tools-->performance monitor
Add counters-->object=Msexchange replication -->counter = copyqueuelength

You can add replayqueuelength too
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Author Comment

by:mnevoso
ID: 34239964
copy queue length doesnt show anything in perfmon
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Author Comment

by:mnevoso
ID: 34239991
how can you tell how far a long the seeding process is?
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Author Comment

by:mnevoso
ID: 34240044
also the edb in the temp-seeding folder on the passive server is a different size than the active server
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Author Comment

by:mnevoso
ID: 34240065
[PS] C:\Windows\system32>get-mailboxdatabasecopystatus mdb02\exchange01

Name                                          Status          CopyQueue ReplayQueue LastInspectedLogTime   ContentIndex
                                                              Length    Length                             State
----                                          ------          --------- ----------- --------------------   ------------
MDB02\EXCHANGE01                              Seeding         32254     0                                  Failed


[PS] C:\Windows\system32>
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Author Comment

by:mnevoso
ID: 34240237
i also have circukar logging enabled
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LVL 31

Expert Comment

by:MegaNuk3
ID: 34240479
Have a look at the "Msexchange replica seeder" object and the "seeding finished %" counter

Were you looking at the copyqueuelength counter on the server that is being seeded?
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Author Comment

by:mnevoso
ID: 34240522
i am looking at these counters on the server the the db is being seeded too. something just doesnt seem right, the seeding is once ever minute i see a spike in bytes read but nothing for bytes written
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Author Comment

by:mnevoso
ID: 34240538
yes every 1 minute i see the database seeding bytes read  spike nothing else though
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Author Comment

by:mnevoso
ID: 34240765
ok what i did notice is it is seeding, but very very slowly. there is no constant seeding going on, is there a way to increase the seeding frequency?
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LVL 31

Expert Comment

by:MegaNuk3
ID: 34241276
Is the "seeding finished %" showing anything?
0
 

Author Comment

by:mnevoso
ID: 34241283
under 10 % constant change up down up down. but never reaches 100%
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LVL 31

Expert Comment

by:MegaNuk3
ID: 34241582
Is the passive server logging anything about the seeding?
Have you tried a Suspend then Update?
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 34241617
Is the passive DB set to "mount at startup"?
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Author Comment

by:mnevoso
ID: 34241656
i am doing a seed now it is going slow though. i am doing it through the cmdlet and i am watching that progress it is only 19mb of 21 gb
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LVL 31

Expert Comment

by:MegaNuk3
ID: 34245996
Wow that is extremely slow.

The other thing you can do which is supposed to work is:
1.) suspend database copy
2.) dismount the active DB and checkbit is cleanshutdown with eseutil /mh
3.) delete all log files and check point file on active DB location (leaves just .edb)
4.) delete passive files completely
5.) mount active copy
6.) update copy
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MegaNuk3 earned 500 total points
ID: 34246009
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