Oracle Application Server opmnctl tips
 

Once you have the Application Server 10g installed, you need to create scripts that set the operating system environment variables.  If you have more than on instance on a server, you need to create a script from each instance.   The Enterprise Manager Application Control web site is a great tool and should be used for most maintenance.  Those with experience with the 9iAS Enterprise Manager will be pleasantly surprised at the speed that Application Control 10g executes.  Even with the improvement 10g brings to the Enterprise Manager web site, you will still occasionally need to work from the operating system and you will need to set the environmental variables.

Each instance has its own ORACLE_HOME where it’s datafiles are located.  If you issue the command:

[oracle@appsvr oracle]$ opmnctl stopall

The operating system will execute the first opmnctl file that is finds while traversing the PATH variable.  This may not be the file you are trying to execute.  Since each instance has its own environment, the easiest way to do this is to make an environment file for each instance on the server.

When creating the script you need to save the old PATH list so that it can be reset each time the script is run.  Otherwise, the current PATH will just continue to grow as you run each script.  I save my PATH  at logon in an environment variable PATH_OLD (in oracle .bash_profile).  

PATH_OLD = $PATH; export PATH_OLD

Then I start each environment script by reestablishing the original path.

For each instance on a sever you need to define:

• ORACLE_HOME

• LD_LIBRARY_PATH

• ORACLE_SID of the Metadata Repository

• Update the PATH

Here is an example script that sets the environmental variables for the Infrastructure instance

ORACLE_HOME=/u01/oracle; export ORACLE_HOME

LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib: \
    /usr/local/bin; export LD_LIBRARY_PATH

ORACLE_SID=asdb; export ORACLE_SID

PATH=/usr/bin:$ORACLE_HOME/bin: \
       $ORACLE_HOME/opmn/bin: \
      $PATH_OLD; export PATH

To use the above script run it with the source command.

[oracle@appsvr oracle]$ source infra10g

or use the "." to run it in a scripts.

[oracle@appsvr oracle]$ . /home/oracle/infra10g

Now when you execute opmnctl, the OS runs the correct command.

You can also set environmental variables in a Windows environment by using a batch file and the set command.

set ORACLE_HOME=f:\oracle\infra10g

Again,  most of you maintenance and configuration will be executed in the Enterprise Manager Application Control 10g web site, but when you need to from the OS, having the environmental variables configures will insure that you are executing the correct program on the correct instance.

Oracle Application Server 10g Administration Handbook

by Oracle Press.