You can run LDIF imports while the server is online from another remote server.
The online import is similar to the offline import, except that you must provide information about how to connect and authenticate to the target server.
To schedule an LDIF file to begin importing at a specific time, use the --task and --start YYYYMMDDhhmmss options of the import-ldif tool.
You can also specify email addresses of users to notify when the import process completes. You can notify them regardless of success or failure or only if the import fails.