Mistake => Learn <= Mistake

[Former Member]

Hi,

As they said "People learn from their Mistakes" some says "People learn from others mistakes" anyway I'm here to present some of my silly mistakes right from the start of my BASIS career as there are lots of but I try to bring those which are still a nightmare..

-) I learned SAP on windows box when it comes to shutdown the SAP system (with os) I took remote of the server and found no MMC window is running "scrached my head" and shutdown PRD server without stopping MMC, DB & logging off users nightmare for my senior ; and their I learned how to stop SAP

-) Shutdown SAP 4.6c to take offline backup without removing cluster after completion started system now the next day the morning begin with alert morning - learned to freeze / unfreeze cluster before and after offline backup

-) Applied kernel without taking backup - learn to take backup

-) Done some of post system copy tasks on PRD instead QAS - learned to check the current working screen

-) Started CI many times without starting ASCS & looking for other possible issue : learned to start 1st ASCS

-)...

I think we all have done some mistake and we learn, remembered it try to put some of your valuable mistakes to learn the mistakes Happy learning mistakes..

Regards,

Edited by: BAIGSA on Nov 11, 2010 4:38 PM

[Former Member]

Entered the password wrongly for three times the first time ever i tried to log-in to SAP and got the user id locked.

- learned how to log-in to a SAP system

Vikranth

[jurjen_heeck]

I once was utterly confused about two users with similar accounts (copied off the same one) where one saw images and the other got error messages instead, in a portal application. After extensive searches on the server side someone suggested CTRL-F5 on the pc of the user who saw images to which he had no rights. After that, at least they both got the errors.

Earlier, someone with admin rights had been logged on to the portal using that same pc and local account.

Learned about browser caching.....

Jurjen

[Former Member]

Applied a non-unicode kernel to a portal (NW java is always unicode). The funny thing was, the portal was still running for six months or so, because there was a correct kernel in DIR_EXECUTABLE...

Then while applying the new supp stack, i wondered why JSPM suddenly asked for the non-unicode kernel. I had to open a OSS message. When they asked why there was a non-unicode kernel, i already started to write a harsh answer, that there is only unicode on NW java. Luckily i double checked...

By the way, there is this legendary thread in the hp support forums: [greatest blunders|http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=186009], obvioulsy rm -r is one of the top mistakes in the unix world. And there is no recycle bin...

So always backup (and test your restores)!

Good luck, Michael

[jurjen_heeck]

there is this legendary thread in the hp support forums: greatest blunders, obvioulsy rm -r is one of the top mistakes in the unix world. And there is no recycle bin...

To add insult to injury, if you mistype a "change directory" command entering a non-existing directory your home directory will become your current working directory. On HP-UX the home directory for root is (or at least was) the root of the filesystem ( / ) !!!

Before rm -r, allways type 'pwd' and carefully read it's output

[matt]

Compress database1 to database2.

>Learned to check the return code here, back in 1991.

Delete database1.

Rename database2 to database1.