In the event of data loss, you can use SnapCenter to restore data from one or more backups to your active file system and then recover the database. Recovery operation is performed by using archive logs of the database in an active file system.
When you restore a database, an operational lock file (.sm_lock_dbsid) is created on the Oracle database host in the $ORACLE_HOME/dbs directory to avoid multiple operations being executed on the database. After the database has been restored, the operational lock file is automatically removed.