What r the tasks that Loadmanger process will do?

Manages the session and batch scheduling: Whe u start the informatica server the load maneger launches and queries the repository for a list of sessions configured to run  on the informatica server.When u configure the session the loadmanager maintains list of list of sessions and session start times.When u sart a session loadmanger fetches the session information from the repository to perform the validations and verifications prior to starting DTM process.
Locking and reading the session: When the informatica server starts a session lodamaager  locks the session from the repository.Locking prevents U starting the session again and again.  Reading the parameter file: If the session uses a parameter files,loadmanager reads the  parameter file and verifies that the session level parematers are declared in the file  Verifies permission and privelleges: When the sesson starts load manger checks whether or  not the user have privelleges to run the session.
Creating log files: Loadmanger creates logfile contains the status of session.
The LM also sends the 'failure mails' in case of failure in execution of the Subsequent DTM
process..