topic Re: How to truncate the wtmp file in Operating System - HP-UX

How to truncate the wtmp file

Timothy P. Jackson — Tue, 24 Apr 2012 19:27:40 GMT

Hi everyone,

I am working on my slow SSH connection. After reading many posts, it appears that it could be the wtmp file. Is using the runacct command the best way to truncate this file.

Any help would be greatly appreciated.

Thanks!

Tim

Re: How to truncate the wtmp file

Dennis Handly — Tue, 24 Apr 2012 23:01:00 GMT

You can truncate by just using the shell:

> /var/adm/wtmp

> /var/adm/wtmps

How large are your wtmp files?

Re: How to truncate the wtmp file

Timothy P. Jackson — Wed, 25 Apr 2012 19:39:37 GMT

Hi Dennis,

Thanks for the reply!

the size of the /var/adm/wtmp is 173280....

I don't think it is the too large but I have to start somewhere in trying to figure out why this is so slow....

I will try clearing them and see what happens. Can I do this with users on the server?

Re: How to truncate the wtmp file

Timothy P. Jackson — Wed, 25 Apr 2012 19:41:45 GMT

Ok I spoke to soon!

The size of /var/adm/wtmps is 2193489044.... This one is very large...

Re: How to truncate the wtmp file

Dennis Handly — Thu, 26 Apr 2012 01:47:13 GMT

>The size of /var/adm/wtmps is 2,193,489,044. This one is very large.

Yep!

Do you have any security or accounting reasons to keep some of that info?

Or you can just backup a compressed copy before you clear it.

Re: How to truncate the wtmp file

Timothy P. Jackson — Thu, 26 Apr 2012 20:51:33 GMT

No reason to keep the information around...

Thanks for all your help Dennis!