User Defined activity does not log messages

Question

I have created a User Defined activity which calls a unix shell script.
This script writes messages to standrard output ("echo") that I want
the process flow to catch in its log, so I can see the messages in
Control Center Manager.
This was actually the behaviour of my User Defined activity until recently.
I must have changed, unintentionally, some parameter/configuration that
I cannot remember. Maybe some "suppress script-messages" parameter? :-)
Anyone in this forum who knows which paramater I might have changed
and/or how I can get back the old behaviour of my activity?
// Pontus

Answer 1

I had the same experience recently: I was trying to log a message to a Unix file, but the process flow would always fail, even though the script executed well from the Unix prompt.
The problem in my case was that redirection is not supported from within an OWB version 9.0.4 process flow. Once I eliminated the "echo My message > logfile" everything was fine. You can even keep "echo My message" with no redirection and it's still ok.
The above holds regardless of where you put your script -- external Unix file, or as part of an "external process" icon in the flow.
If things are the same in your case, you'll need to figure out an alternative way of logging messages when executing the script. I decided to use external files as flags, by renaming them from the script.
Santiago