Need help on expdp and impdp concept
So? Just copy a dumpfile to a location accessible to database2.

ora is not a directory, it is a directory object defined in the database, that serves as an "alias" to the real path in the filesystem.

Overview of Oracle Data Pump

File Allocation


  Data Pump is server-based rather than client-based, dump files, log files, and SQL files are accessed relative to server-based directory paths. Data Pump requires that directory paths be specified as directory objects. A directory object maps a name to a directory path on the file system.
  
  The following example shows a SQL statement that creates a directory
  object named dpump_dir1 that is mapped to a directory located at
  /usr/apps/datafiles.


SQL&gt; CREATE DIRECTORY dpump_dir1 AS '/usr/apps/datafiles';


Or you can import the table directly from database1 to database2 through a database link.

Using Network Link Import to Move Data


  When the Import NETWORK_LINK parameter is used to specify a network
  link for an import operation, SQL is directly used to move the data
  using an INSERT SELECT statement. The SELECT clause retrieves the data
  from the remote database over the network link. The INSERT clause uses
  SQL to insert the data into the target database. There are no dump
  files involved.