Microsoft KB Archive/300259

Knowledge Base

Mismatch Watermark and 19118 Error Messages Occur Due to Loss of Transactions

Article ID: 300259

Article Last Modified on 1/25/2006

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APPLIES TO

• Microsoft Metadirectory Services 2.2 Service Pack 1

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This article was previously published under Q300259

SYMPTOMS

When you are running the Active Directory Management Agent (ADMA) in Delta mode, it is possible that not all of the objects that were created by TAMA in the connector space of the Management Agent (MA) will be processed. The following information is logged in the Zscript.log for the file-based MAs or in the Dslib.log for the ADMA:

01/05/26 21:15:36.125 ERROR 19118: DS_RC_LOST_TRANSACTION

Or, the following message is logged only in the ADMA because of the watermarks that are used to keep track of Delta changes:

01/05/26 21:12:07.218 WARNING: Mismatched watermark
01/05/26 21:12:09.562 WARNING: Possible loss of transactions [Sat May 26 09:22:29 2001 379743 - Sat May 26 13:27:56 2001 78012]

CAUSE

The Db5config file contains a parameter that sets the size of the transaction stack, which is the db5_max_tran_file_size parameter. Setting this parameter controls the maximum size of the transaction stack. When the maximum size is reached, the file is overwritten. If you set the size too small, it is possible that the transaction data will be overwritten, which generates the error message that is noted in the "Symptoms" section of this article.

The following settings are the default settings for the different versions of Microsoft Metadirectory Services (MMS):

MMS 2.1 = 64 MB
MMS 2.2 = 512 MB
MMS 2.2 SP1 = 2 GB

If you upgrade your MMS server, the Db5config file will not be overwritten. You must manually edit the file to set the desired size after upgrading.

Examples of the Db5config File Before and After Upgrade

The following information exists in an upgraded MMS 2.2 SP1 Db5config file:

   # 536870912 == 512 MB
   db5_max_tran_file_size       536870912
                

In a new installation of MMS 2.2 SP1 the following setting exists:

   # Note that this number cannot be larger than 4294967295
   db5_max_tran_file_size          2000000000
                

RESOLUTION

To resolve this behavior, check the Db5config file and then update the db5_max_tran_file_size if necessary. To increase the size of the DB5Config file:

1. Stop the MMS Server Service.
2. Open the Zoomserv\data\config\db5config file in a text editor.

3. Make the following changes to the file:
   
   from:

   # 536870912 == 512 MB
   db5_max_tran_file_size      536870912
                       

   to:

   # Note that this number cannot be larger than 4294967295
   db5_max_tran_file_size          2000000000
                       

4. Save the file.
5. Start the MMS Server Service.

Additional query words: zoomit transaction stack

Keywords: kberrmsg kbprb KB300259

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