Case 1: using dbo."01520Appdata" for adding trandata & for extract and pump parameter files 

Added trandata using dbo."01520Appdata"	- Successful
mentioned dbo."01520Appdata" in extract & pump parameter files - Extract abended with error as - "ERROR   OGG-00899  Table dbo.dbo.01520Appdata does not exist"

Case 2: using dbo."01520Appdata" for adding trandata & "dbo.01520Appdata"  for extract and pump parameter files

Add trandata using "dbo.01520Appdata"	- Failed with error - ERROR: No tables found matching 'dbo.dbo.01520Appdata'
so used dbo."01520Appdata" to add trandata
mentioned "dbo.01520Appdata" in extract & pump parameter files - Even after couple of inserts the dat file as well as rpt file were Not updated - No error, No trail file update for data generation

Case 3 : using "01520Appdata" for adding trandata & for extract and pump parameter files 

Added trandata using "01520Appdata"	- Successful
mentioned dbo."01520Appdata" in extract & pump parameter files - Extract abdended with error as - "ERROR   OGG-00899  Table dbo.dbo.01520Appdata does not exist"

SQL> create table 01520Appdata (col number);
create table 01520Appdata (col number)
             *
ERROR at line 1:
ORA-00903: invalid table name


SQL> create table "01520Appdata" (col number);

Table created.

SQL> insert into "01520Appdata" (col) values (100);

1 row created.

SQL> select * from "01520APPDATA";
select * from "01520APPDATA"
              *
ERROR at line 1:
ORA-00942: table or view does not exist


SQL> select * from "01520appdata";
select * from "01520appdata"
              *
ERROR at line 1:
ORA-00942: table or view does not exist


SQL> select * from "01520Appdata";

       COL
----------
       100

SQL>