>>Operator can filter only tables with similar name right? if not correct me.
Yes, thats correct you can use the LIKE and IN.
>>Suppose if all 6000 tables have different names..
In Standard Practice there should be some similarity like some prefix/suffix so you can use something like INCLUDE=TABLE:" like '%AB%'"
>>if all tables are having different names.
In that case as you know you have to list all the table you want to backup.