DAG disconnected and resynchronizing

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C

channavera

Hi All,
I have a 2 node DAG. I just created a database copy for on the DB and it worked fine, but when i enabled the database copy for another DB, it throw a error disconnected and resynchronizing, but it doesn't seems to process at all for along time.

I suspnded the copy and reenabled again it throws the same error disconnected and resynchronizing, but it doesn't seems to process the copy.

swamy
 
C

channavera

I tried to delete the db copy and recreate, still the same problem for that db, but the db copy is working fine for the other dbs !!!!swamy
 
P

pantherfan69

verify you arent running out of disk space, and that you have the volumes named identically on both nodes. Also check the log location and make sure it has space
 
C

channavera

Hi Pantherfan69,
All the hardware volume name, size are an exact match on both the servers with sufficient disk space on the volumes.

swamy
 
A

AndyD_ [MVP]

Any Errors in the event logs?

What does test-replicationhealth and Get-MailboxDatabaseCopyStatus show?
 
C

channavera

HI Andy,
Get-mailboxdatabasecopystatus show either failed and suspended for some database disconnected and resynchronizing

swamy
 
C

channavera

Is there any diagnostic logging i can enable?. I do notice these errors ( failed and suspended for some database disconnected and resynchronizing) once i enable db for a replica.swamy
 
K

Khoj Sahiwala

Enable Diagnostic logging Slect the server objectim ESM and enable diagnostic logging
 
C

channavera

I mean what components should i enable for diagnostic logging for the replication issue.

swamy
 
C

channavera

Following are the event i see in the event viewer.

[Seed Manager] The seed request for database 'DB7' encountered an error during seeding. Error: An error occurred while processing a request on server 'MBXN1'. Error: Database 'ce117d13-3207-4748-aa19-8f406ef0b0ee' was not active on source server 'MBXN1'.

The expected registry value 'Background Cleanup' under registry key 'SYSTEM\CurrentControlSet\Services\MsExchangeIs\MBXN2\Private-ce117d13-3207-4748-aa19-8f406ef0b0ee' could not be found. Some server operations may be affected.

The database file wasn't found after log replay. The copy will be set to failed. Database: 'DB7\MBXN2'. File Path: 'F:\Database\DB7\DB7.edb'.

The Microsoft Exchange Information Store database " ce117d13-3207-4748-aa19-8f406ef0b0ee: /o=Contoso/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=casarray.contoso.co.in/cn=Microsoft Private MDB" was stopped

Exchange Search Indexer has temporarily disabled indexing of the Mailbox Database DB7 (GUID = ce117d13-3207-4748-aa19-8f406ef0b0ee) due to an error (System.ComponentModel.Win32Exception: Catalog is being dismounted from RPC interface.).

At '11/13/2010 8:07:37 AM' the copy of 'DB7' on this server experienced an error that requires it be reseeded. For more detail about this failure, consult the Event log on the server for other storage and " ExchangeStoreDb" events. The passive database copy has been suspended.

swamy
 
H

Harikrishnan Sivaprakasam

hi

since replication is working fine for other database there wont be any issue with the network, also you have mentioned that the servers got enough space.

then try this

- Dismount the database (the database you have issues)

- remove the passive copy

- clear log on database files on the passive location

- move the transaction logs and system fine (.chk) to a different folder on the active node (where the database was mounted)

- thne mount the database (it will start with new sequence of log files)

- thne try adding the database copy

check the status running Get-mailboxDatabaseCopyStatus

Regards, Hari | MCSE+ Messaging
 
H

Harikrishnan Sivaprakasam

hi

since replication is working fine for other database there wont be any issue with the network, also you have mentioned that the servers got enough space.

then try this

- Dismount the database (the database you have issues)

- remove the passive copy

- clear log on database files on the passive location

- move the transaction logs and system fine (.chk) to a different folder on the active node (where the database was mounted)

- thne mount the database (it will start with new sequence of log files)

- thne try adding the database copy

check the status running Get-mailboxDatabaseCopyStatus
Regards, Hari | MCSE+ Messaging
Small correction

- clear logs and database files on the passive location

Regards, Hari | MCSE+ Messaging
 
C

channavera

Hi Hari

I get the following error

: Continuous Replication for Database 'DB1\Node2' is in a 'FailedAndSuspended' state on machine 'Node2'. The reason it is suspended is: The database file wasn't found after log replay. The copy will be set to failed. Database: 'DB1\Node2'. File Path: 'E:\Database\DB1\DB1.edb'.

swamy
 
J

James-Luo

Is it a multiple domain environment?

Have you tried to remove the failed database copy, and then create the copy as Hari suggested?

Please check the configuration on the NIC on the MBXN2, incorrect setting will cause the same issue, like DNS entry

“MAPI Network Adapter Configuration” section in Planning for High Availability and Site Resilience

Please run the commands below on the MBXN2 to test the AD connectivity

NLTEST /DSGETSITE

NLTEST /DSGETDC: Domain Name /GC

Please run " DCdiag.exe /v" and 'Netdiag.exe /v" command on the GC and check if there is any failed tests in the result

Then, dismount the source database, remove the log files, and then mount the database again to perform the seed

For “Background Cleanup” issue, please go to registry on the MBXN2, and verify if “Background Cleanup” entry exists or not. If not, please add it (Reference)

James Luo

 
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