Can be caused by the following:
1. Incorrect syntax used in the config file, e.g. no space between table name and defined vertical partitioned column list.
user.table_name (column1,column2) user.table_name(column1,column2) target_server@o.TARGETSID
In the above example, there is no space between the target table and list of Vertically Partitioned columns.
Below example shows correct syntax with the space in place.
user.table_name (column1,column2) user.table_name (column1,column2) target_server@o.TARGETSID
2. Column name longer than 30 characters defined in the config file where target compatibility is Oracle 11g.