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Renaming the logs in Unix without shutting the server

Chak Radar
Greenhorn

Joined: May 05, 2003
Posts: 7
How can i rename the big log files in Unix environment without shutting down the applicatio server.Here iam using websphere.
Can anyone help me out?
Leslie Chaim
Ranch Hand

Joined: May 22, 2002
Posts: 336
Have you tried the mv command?


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Chak Radar
Greenhorn

Joined: May 05, 2003
Posts: 7
Leslie
In the real time environment i have few server instances within an websphere application server.
This is a production environment and i cannot shut down the server to take a back up of existing logs.Again when the server is started the application will create a new log file with 0 bytes.My question is CAN i take a back up of the log files with out shutting down the server.
That is with out an outage to the production environment can i take a back up of huge logs .The huge logs may cause slowness in accessing the application.I think iam clear in my question this time.
Thanks
Chak Radar
Leslie Chaim
Ranch Hand

Joined: May 22, 2002
Posts: 336
Chak,
It really does not matter which application is writing to the log file.
I understand your problem as follows:
Q. I have a process which writes to a log file which grows very rapidly. How do I truncate the file without shutting down my process.
A. Simply clubber the file as in (from the shell):

Q. Will I lose the data from the log.
A. Yes! If you want to preserve it you can do something like this:

I hope this is helpful. Here's some more
Cheers,
Leslie
[ May 06, 2003: Message edited by: Leslie Chaim ]
 
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