Shell Programming and Scripting

Guys,

I am calling script BIADMDEV_oaaptest01.env from script [icode]oraenv. In script BIADMDEV_oaaptest01.env, I have bunch of environment variables. For example, I have MW_HOME=/ord/appserv/oracle/MW; export MW_HOME and similar stuff.

I run script oraenv at the shell at command prompt. For example

Code:

$./oraenv

But, after script execution is complete, if I check echo $MW_HOME, it shows nothing.

Here is the code from script oraenv.

Code:

echo "Source 11g FMW Oracle Home !!"
. /ord/appserv/oracle/MW/BI/BIADMDEV_oaaptest01.env
exit 0

After oraenv gets executed, at shell command prompt, if I do echo $MW_HOME, it shows nothing.

Note that if I run . /ord/appserv/oracle/MW/BI/BIADMDEV_oaaptest01.env directly, it works fine.


Please help.

Thanks,

Sam

That's the way it's supposed to work.

Running it like ./programname runs it in its own, independent, separate shell. That shell, not yours, has the environment variables set in it. And when the script finishes, the new shell quits, and is gone.

Running it like . ./programname runs the script inside your own shell, where the variables can actually be used by you.

This is called "sourcing".

Off topic:
Be aware that there is a useful system script which comes with Oracle called oraenv . Well worth a read of the script.

Thanks Corona688. It is resolved now.