Cannot connect to the ChangeAuditor Client. "Database access error, please verify the ChangeAuditor database connection (4235678)

The following error is returned when attempting to connect to the Change Auditor client:

Cannot connect to the ChangeAuditor Client.  "Database access error, please verify the ChangeAuditor database connection

The following messages are found the ChangeAuditor.Service.exe.nptlog (Coordinator log) :

2012-08-13 13:23:58.430 [34][INFO][OnExceptionSqlEvent(0)] SQL error(-2146232060): The transaction log for database 'ChangeAuditor' is full. To find out why space in the log cannot be reused, see the log_reuse_wait_desc column in sys.databases; command: dbo.usp_Repository_Write
2012-08-13 13:23:58.430 [34][ERROR][ExceptionSql_ExceptionSqlEvent(0)] SQL connection lost. Connections will be dropped and coordinator will attempt to reconnect
2012-08-13 13:23:58.539 [34][INFO][ScheduleTask(0)] Scheduling SqlReconnectTask, first run: 00:00:10, period: 00:00:30
2012-08-13 13:24:05.525 [34][ERROR][DataSetWrapper(0)] Database inactive
2012-08-13 13:24:05.525 [34][WARN][_Run(0)] Task AlertProcessorSmtpTask has not completed successfully due to error: Database inactive
2012-08-13 13:24:08.529 [34][INFO][Run(0)] Retrying SQL connection
2012-08-13 13:24:08.529 [34][INFO][Connect(0)] Opening ChangeAuditor database: Data Source=ServerName;Initial Catalog=ChangeAuditor;Integrated Security=True;User ID=Domain\SQLAccount;Application Name="ChangeAuditor Coordinator on ServerName"
2012-08-13 13:24:08.529 [34][INFO][Run(0)] SQL connection re-established successfully

These messages then repeat.