REP-0004: Warning: Unable to open user preference file

All Concurrent request completed with below Error.

Error:

REP-0004: Warning: Unable to open user preference file.
REP-0069: Internal error
REP-57054: In-process job terminated:Finished successfully but output is voided

Solution :

I have Checked all necessary permission and access are given already.

Copy of the file prefs.ora in the directory  $ORACLE_HOME/tools/admin to $HOME

$ cp $ORACLE_HOME/tools/admin/prefs.ora $HOME/

Reference : 12: Request Logs Contain the Message "REP-0004: Warning: Unable to open user preference file" (Doc ID 1120529.1)