To avoid intensive traffic utilization and save your time you can use command line admin to achieve following tasks:

-v,--verbose verbose error messages
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-h,--help prints this message
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-b,--backup Backups OM
-file <arg> (optional) file used for backup/restore/install
--exclude-files (optional) should backup exclude files [default: include]
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-r,--restore Restores OM
-file <arg> file used for backup/restore/install
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-l,--languages Reimport All language files into DB
-lang,--language <arg> (optional) Single language to be imported (id or name)
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-i,--install Fill DB table, and make OM usable
-user <arg> Login name of the default user, minimum 4 characters (mutually exclusive with 'file')
-group <arg> The name of the default user group (mutually exclusive with 'file')
-email <arg> Email of the default user (mutually exclusive with 'file')
-tz <arg> Default server time zone, and time zone for the selected user (mutually exclusive with 'file') file used for backup/restore/install
--email-auth-pass <arg> (optional) Email auth password (anonymous connection will be used if not set)
--db-host <arg> (optional) DNS name or IP address of database
--drop (optional) Drop database before installation
--db-user <arg> (optional) User with write access to the DB specified
--system-email-address <arg> (optional) System e-mail address [default: noreply@openmeetings.apache.org]
--password <arg> (optional) Password of the default user, minimum 4 characters (will be prompted if not set)
--email-use-tls (optional) Is secure e-mail connection [default: no]
--email-auth-user <arg> (optional) Email auth username (anonymous connection will be used if not set)
--db-port <arg> (optional) Database port
--smtp-port <arg> (optional) SMTP server for outgoing e-mails [default: 25]
--db-name <arg> (optional) The name of Openmeetings database
--disable-frontend-register (optional) Do not allow front end register [allowed by default]
--db-type <arg> (optional) The type of the DB to be used
--skip-default-rooms (optional) Do not create default rooms [created by default]
--force (optional) Install without checking the existence of old data in the database.
--smtp-server <arg> (optional) SMTP server for outgoing e-mails [default: localhost]
--db-pass <arg> (optional) Password of the user with write access to the DB specified
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-f,--files File operations - statictics/cleanup
--cleanup (optional) Should intermediate files be clean up
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