If your , database ONLINE backup cancelled with en error “ORA-01031: insufficient privileges” then you should check your “DB Rights” first to solve the problem.
For an example ;
This is the log of erroneous “Database Online Backup” action.
Then go to OS level and execute the following SQL syntax
SQL> grant select any table to “OPS$<DOMAIN>\SAPService<SID>”
Now try again and i hope it will work for you…