Action: Please drop the Database Link and recreate it after import.
Tip:
If you encounter EXP-00106: Invalid Database Link Passwords, you may better use Data Pump instead of the old export utility (exp).
Another solution is to drop the database links before running export.
Or install the client patch to Version 11.2.0.3:
Goto https://support.oracle.com. Under the Patches and Updates tab search for *10404530*
A list of Oracle 11.2.0.3 software will be listed.
Select the software version which matches your operating system, download and install it.