0 - 2 of 2 tags for online archive

Getting following warning in almost start of a BAR job log
*** Warning 9136:Online archive logging cannot be enabled on one or more tables
Table Info unavailable

Has anyone tried this feature in TD12 or TD13?

I would like to know how it does online backup. Do the inserts/updates are commited while the backup is in progress?
Does it use Transient Journal? Teradata manual on backup has below information.
I am looking for more technical information on how online backup is done.

"When online archive is initiated on either a table or a database, the
system creates and maintains either a log for the specified table or a
separate log for each table in the specified database. All changes to a