ORA-28575 Unable to open RPC connection to external procedure agent

After patching ,In oracle database user is facing the below error.

Error : ORA-28575

Resolution:

Please add the EXTPROC  entry in Listener.ora and tnsnames.ora and reload the LISTENER on all nodes of a cluster.

EXTPROC_CONNECTION_DATA =

  (DESCRIPTION =

    (ADDRESS_LIST =

      (ADDRESS = (PROTOCOL = IPC)(KEY = LISTENER))

    )

    (CONNECT_DATA =

      (SID = PLSExtProc)

    )

  )

Note: Please make sure soft links are pointed to our common location from GRID_HOME/network/admin and ORACLE_HOME/network/admin.

[frbucoras1l.em.health.ge.com:/u01/app/oracle/product/11.2.0.3/dbee_1/network/admin]

stgcrln1:oracle>ls -ltrh

total 28K

lrwxrwxrwx 1 oracle oinstall   51 Apr 19  2013 tnsnames.ora -> /u02/app/oracle/admin/ORABUC1S/network/tnsnames.ora

lrwxrwxrwx 1 oracle oinstall   47 Apr 19  2013 ldap.ora -> /u02/app/oracle/admin/ORABUC1S/network/ldap.ora

lrwxrwxrwx 1 oracle oinstall   51 Apr 19  2013 listener.ora -> /u02/app/oracle/admin/ORABUC1S/network/listener.ora