The OdbcTarget logs to an ODBC database.  It automatically discards oldest entries after reaching a default of 10,000 log messages.  This behavior can be overridden.  Although rolling is supported, the database table will need to be created manually.

The default table name is tblLog. Here are the column names and types:
LogDate OdbcType.DateTime
Message OdbcType.Text
Additional OdbcType.Text 
ElapsedMilliseconds OdbcType.Real
LogLevel OdbcType.VarChar
MachineName OdbcType.VarChar
UserName OdbcType.VarChar
ProcessName OdbcType.VarChar
CallingMethod OdbcType.VarChar
LineNumber OdbcType.VarChar

It has these properties that can be configured:

• Name - Defaults to SqLiteTarget
• LoggingMode - Defines which mode to use for the target; Synchronous, Buffered, or Asynchronous.  The default is Synchronous.
• MessageFormat - What to output in the log.  See the Message Format topic for more information.
• DateFormat - The date format for the %LogTime% variable in the MessageFormat. See the Date Format topic for more information.
• MinimumLevel - The minimum logging level to log a message.
• AssemblyNameFilter - If specified, only log for a specific assembly name.  See the Filtering topic.
• NamespaceFilter - If specified, only log for a specific namespace.  See the Filtering topic.
• ClassNameFilter - If specified, only log for a specific class name.  See the Filtering topic.
• MethodNameFilter - If specified, only log for a specific method name.  See the Filtering topic.
• ThreadNameFilter - If specified, logging will only occur for the thread id or thread name specified. See the Filtering topic.
• UserNameFilter - If specified, logging will only occur for the specific user name.  See the Filtering topic.
• MachineNameFilter - If specified, logging will only occur for the specific machine name.  See the Filtering topic.
• BufferSize -  When a logging target has a Mode of Buffered, this is how often messages are committed.  See the Buffered Logging topic.
• ConnectionString - Get or set the connection string.
• TableName - Get or set the table name.  Defaults to tblLog
• MaxEntries - Discard the oldest entries that are greater than MaxEntries.  Set to zero to disable.

 

//Example runtime configuration, can also use log.config, app.config, or web.config
Log.ResetConfiguration();

OdbcTarget target = new OdbcTarget();
target.ConnectionString = @"ProviderDriver=SQLite3 ODBC Driver;Database=E:\sqlite.db;";
target.TableName = "LogTable";
//Set to zero to not discard max entries
target.MaxEntries = 10000;
Log.Config.Targets.Add(target);

Log.Debug("This is a test");