Double check database ID before you issue shutdown command

Stay on the job.

You are OK.

"Now the fact is based on the audit data, me issued the command from standby server which I am assuming it is standby database, make the production database shutdown.."

-- Never ever make this kind of assuming again!

-- Type: select name from v$database;  before you type any  shutdown command from today. REMEMBER IT! This is what I have been doing for years.

-- Let manager know: Sorry I made a mistake which I was not on purpose. I will folow LaoTu's suggetion and it will never happen again.

Enjoy!