SAP 4.6c Oracle recommendations
March 10, 2008
I had put this together for a 4.6C system back in 2005. Some of these are now default behavior, but you may still have some older systems that have not yet been converted, or it may provide a good reference at some point. Read more
SAP instance check shell script
March 10, 2008
I wrote this script about about four years ago and came across it again today. This will probobly be helpful in someway to someone someday 
This script requires the SAP SDK, which is available from SAP. If you can’t find it let me know.
So, this script will do the following:
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Attempt to connect to sap using sapinfo command check to see if host is already known to be down, or if recovered from being down
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send pages / email to defined list
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Tracks systems that are already down so as not to resend email / pages
Rename / Move Oracle datafile
March 10, 2008
I needed to move a datafiles from one directory to another. The datafile was created in the wrong location. Here is a procedure I used:
APF and BFD on Debian
March 8, 2008
Howto install APF / BFD on a Debian system
.. Read more
HTTP to HTTPS via mod_rewrite
March 8, 2008
I was looking for this information one day, and thought I would share what I found.
To redirect a website from http -> https I utilized mod_rewrite. And created a .htaccess file with the following contents.
$ cat .htaccess
Options FollowSymLinks
RewriteEngine On
RewriteCond %{SERVER_PORT} !^443$
RewriteRule ^(.*) https://your_server.com/$1
Xen virtualization notes
March 8, 2008
I have recently been working virtualizing Windows and Linux machines using Xen. A few things popped up along the way and a bit of research was done to make things work properly, these are some of the notes I used along the way.
- I am partial to using LVM based devices for creating my virtual machines. Think lvm snapshots for backups.
Read more
Netdump, figuring out what caused that system crash
March 8, 2008
Dedicated Linux Server Checklist for the New Year.
March 8, 2008
cPanel / Fantastico Deluxe install doesn’t do anything.
March 8, 2008
MySQL threads tuning
February 21, 2007
Some quick info I have pulled off of the web on MySQL performance tuning. I am currently working on some mysql performance tuning and this is some of the information I have gathered.
Threads_created details the number of threads that have been created since the MySQL server started, and Connections is the total number of client connections to the MySQL server since startup. To work out the thread cache hit ratio, we use this calculation:
