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Manage DQS Log Files

Data Quality Services (DQS) log files help you in diagnosing and troubleshooting issue with Data Quality Server, Data Quality Client, and the DQS Cleansing component in Integration Services. Separate log files are generated for Data Quality Server, Data Quality Client, and the DQS Cleansing component.

You can use Data Quality Client to configure the log severity setting for Data Quality Server features and modules. Additionally, you can also configure some other (advanced) settings for the DQS log files by manually changing the DQS log configuration settings in the DQS_MAIN database and an XML file on the Data Quality Client computer.

The Data Quality Server log file, DQServerLog.DQS_MAIN.log, includes logs of activities that are run on Data Quality Server. If you installed the default instance of SQL Server, the DQServerLog.DQS_MAIN.log file is available at C:\Program Files\Microsoft SQL Server\MSSQL12.MSSQLSERVER\MSSQL\Log. The Data Quality Server log file contains the following pieces of information, each delimited by a pipe (|):

  • Date and time

  • Thread name

  • Thread ID

  • Log severity (FATAL, ERROR, WARN, INFO, and DEBUG)

    Note Note

    The DEBUG logging severity is same as Verbose.

  • UID (internal DQS infrastructure ID)

  • Namespace

  • Class and method

  • Message

Along with these, the log file also displays information about the application version, computer name, user name, and operating system.

A sample entry in the Data Quality Server log file looks like the following:

23-08-2013 01:45:29|[]|4|INFO|PUID|InfInfoModuleStarting|Microsoft.Ssdqs.Core.Startup.ServerInit|Starting DQS ServerInit: version [12.0.0.0], machine name [DQS-TEST], user name [NT Service\MSSQLSERVER], operating system [Microsoft Windows NT 6.1.7600.0]...

The DQServerLog.DQS_MAIN.log file is a rolling file, and a new log file is created once the existing log file exceeds the rolling file size limit specified in the Data Quality Server log configuration settings. For more information, see Configure Advanced Settings for DQS Log Files.

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The Data Quality Client log file, DQClientLog.log, includes the client side logs. The Data Quality Client log file is available at %APPDATA%\SSDQS\Log. The Data Quality Client log file contains similar set of information as in the server log file, but for the client side.

As with the Data Quality Server log file, the Data Quality Client log file is also a rolling file, and a new log file is created once the existing log file exceeds the rolling file size limit specified in the Data Quality Client log configuration settings. For more information, see Configure Advanced Settings for DQS Log Files.

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The DQS Cleansing component log file, DQSSSISLog.log, includes logs of activities performed using the DQS Cleansing component in Integration Services. The DQS Cleansing component component log file is available at %APPDATA%\SSDQS\Log. The DQS Cleansing component log file contains similar set of information as in the server log file, but for the DQS Cleansing component.

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Task Description

Topic

Describes how to configure log severity settings for DQS log files using Data Quality Client.

Configure Severity Levels for DQS Log Files

Describes how to manually configure advanced settings for DQS log files.

Configure Advanced Settings for DQS Log Files

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