请参阅下面显示的日志以获取更多信息：
2020-04-23 13:13:56.97 spid10s Starting up database 'tempdb'.
2020-04-23 13:13:57.42 spid10s The tempdb database has 4 data file(s).
2020-04-23 13:13:57.42 spid10s The tempdb database data files are not configured with the same initial size and autogrowth settings. To reduce potential allocation contention, the initial size and autogrowth of the files should be same.
2020-04-23 13:13:57.42 spid25s The Service Broker endpoint is in disabled or stopped state.
2020-04-23 13:13:57.42 spid25s The Database Mirroring endpoint is in disabled or stopped state.
2020-04-23 13:13:57.44 spid25s Service Broker manager has started.
2020-04-23 13:13:58.22 Logon Error: 18456, Severity: 14, State: 38.
2020-04-23 13:13:58.22 Logon Login failed for user 'ZA\ZA_DataExtr_DAAD'. Reason: Failed to open the explicitly specified database 'DG4_40'. [CLIENT: 10.50.254.40]
2020-04-23 13:14:00.23 Logon Error: 18456, Severity: 14, State: 38.
2020-04-23 13:14:00.23 Logon Login failed for user 'ZA\ZA_DataExtr_DAAD'. Reason: Failed to open the explicitly specified database 'DG4_40'. [CLIENT: <local machine>]
2020-04-23 13:14:09.22 Server Software Usage Metrics is enabled.
提前致谢。