Monthly Archives: February 2014

Kill Oracle Sessions With PoSH

Recently I have been tasked with taking over the database related tasks for an Oracle database that is the backend for a third party application. Two of the monthly processes require the all the user sessions connecting to the application be killed before hand. Straight forward enough…there are just a lot of sessions.

Last time I did this I had forgotten that I had this task and on the day of I was not prepared with any type of automation. As a result, I was killing off connections by hand. Yes, there was sadness with each arrow up and the changing of the SID and SERIAL# values.

Moving on, I knew I wanted to automate this with powershell so I did some searching and came across this article on querying Oracle with PS. I walked each of the segments, modifying the code for our environment and for my needs. Everything was going great…until I decided to run the code in production. There was more sadness –

Once I was done cursing and swearing I started to research the error. Our pre-prod and production environments should be the same. After some digging I found some small differences in the listener.ora files and thought this might be the clue I was looking for.

Cut to Monday moring – a quick chat with our Oracle person (read: the guy on our team that has Oracle training…training that I do not have) brings me my solution – something far more simple than I had imagined. Since the production server was set up with a different port than the one Oracle defaults to all I needed to do was include that with the server reference in my connection string. Duh!

I began testing in the UAT environment and uncovered one small issue – a semi-colon in my kill statement that was not needed and causing my code to fail. Once that was removed everything looked good with the exception of getting error messages when trying to kill a session related to a system process (there weren’t that many sessions to begin with here, not to mention, it didn’t matter if I broke anything on this server).

Feedback is welcome. Hoping you find this helpful. 🙂