Access Using a Service Session 
Use
To use the DBM Server commands for
checking backups and restoring parameter files from the data backup, you must have a service session running.For a service session with the
database instance, you can use the following
DBM commands:
| Terminating a Service Session |
service_release |
| Opening a Service Session |
service_connect |
Prerequisites
You have the DBM operator authorization
Backup.