Database Networking (MOSC)

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Listner TNS-12528

edited May 18, 2009 9:12AM in Database Networking (MOSC) 5 comments
 Dear All,

When a client connects to our Oracle DB 11g initially for some session it gets connected, but after some time when a new User Connects or the Users in the Connectioned session gets disconnected and we are getting the following errors

TNS-12528:TNS:Listener:All Appropriate instances are blocking new connections
TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
2

The Listner.ora configuration is below.

# listener.ora Network Configuration File: F:\app\Administrator\product\11.1.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

LISTENER1 =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = hostname1.domain)(PORT = 1521))

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