Hello,
Here is the configuration used:
1. MS Windows Server 2003 R2 SP2
2. 4GB RAM
3. Tomcat has set -Xmx to 1G
4. Tomcat 5.5.30
5. This is production environment

The server had been working for a long time quite well but one day it stopped 
responding (it did not respond on request) with weird logs in 
jakarta_service.log (see at the bottom).

Unfortunately I do not have information about processor and memory usage from 
hang moment. What these weird *s mean in the log? Is it the root cause of the 
issue. Moreover there are no additional messages in other Tomcat and 
application logs recorded.


jakarta_service.log content:
[2011-04-26 09:25:02] [info] Commons Daemon procrun (1.0.2.0) started
[2011-04-26 09:25:02] [info] Running Service...
[2011-04-26 09:25:17] [info] Starting service...
[2011-04-26 09:25:24] [info] Service started in 6500 ms.
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:27:20] [info] *s
[2011-04-28 10:27:20] [info] *s
[2011-04-28 10:27:20] [info] *s
[2011-04-28 10:27:20] [info] *s
[2011-04-28 10:27:52] [info] *s
[2011-04-28 10:27:52] [info] *s
[2011-04-28 10:27:52] [info] *s
[2011-04-28 10:27:52] [info] *s
[2011-04-28 10:28:26] [info] *s
[2011-04-28 10:28:26] [info] *s
[2011-04-28 10:28:26] [info] *s
[2011-04-28 10:28:26] [info] *s
[2011-04-28 10:28:57] [info] *s
[2011-04-28 10:28:57] [info] *s
[2011-04-28 10:29:29] [info] *s
[2011-04-28 10:29:29] [info] *s
[2011-04-28 10:30:05] [info] *s
[2011-04-28 10:30:05] [info] *s
[2011-04-28 10:30:41] [info] *s
[2011-04-28 10:30:41] [info] *s
[2011-04-28 10:31:24] [info] *s
[2011-04-28 10:31:24] [info] *s
[2011-04-28 10:31:58] [info] *s
[2011-04-28 10:31:58] [info] *s
[2011-04-28 10:32:35] [info] *s
[2011-04-28 10:32:35] [info] *s
[2011-04-28 10:33:13] [info] *s
[2011-04-28 10:33:13] [info] *s
[2011-04-28 10:33:50] [info] *s
[2011-04-28 10:33:50] [info] *s
[2011-04-28 10:34:29] [info] *s
[2011-04-28 10:34:29] [info] *s
[2011-04-28 10:35:06] [info] *s
[2011-04-28 10:35:06] [info] *s
[2011-04-28 10:35:46] [info] *s
[2011-04-28 10:35:46] [info] *s
[2011-04-28 10:36:25] [info] *s
[2011-04-28 10:36:25] [info] *s
[2011-04-28 10:37:04] [info] *s
[2011-04-28 10:37:04] [info] *s
[2011-04-28 10:37:45] [info] *s
[2011-04-28 10:37:45] [info] *s
[2011-04-28 10:38:26] [info] *s
[2011-04-28 10:38:26] [info] *s
[2011-04-28 10:39:06] [info] *s
[2011-04-28 10:39:06] [info] *s
[2011-04-28 10:39:43] [info] *s
[2011-04-28 10:39:43] [info] *s
[2011-04-28 10:40:22] [info] Stopping service...
[2011-04-28 10:40:22] [info] *s
[2011-04-28 10:40:22] [info] *s
[2011-04-28 10:41:01] [info] *s
[2011-04-28 10:41:01] [info] *s




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