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DPB =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.1.1.100)(PORT = 1521))
    )
    (CONNECT_DATA =
    (SERVICE_NAME = dps)
    )
  )

I have used above in tnsnames but still gives me the above error.

How to resolve this error?
IS SERVICE_NAME & SID Similar in tnsnames?
Posted 11-Nov-13 1:36am
Edited 11-Nov-13 1:37am
v2
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Solution 1

Hello Member,

The error ORA-12514 means that a listener received a request to establish a connection to a database or other service. The connect descriptor received by the listener specified a service name for a service (usually a database service) that either has not yet dynamically registered with the listener or has not been statically configured for the listener. This may be a temporary condition such as after the listener has started, but before the database instance has registered with the listener.

The possible resolutions for this error are
  • Check which services are currently known by the listener by executing:
    lsnrctl services <listener name>
  • Check that the SERVICE_NAME parameter in the connect descriptor of the net service name used specifies a service known by the listener.
  • If an easy connect naming connect identifier was used, check that the service name specified is a service known by the listener
  • Check for an event in the listener.log file

This answer[^] on oracle forums should help you understand the difference between the SID and the SERVICE_NAME.

Regards,
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Solution 2

Hi,
I think the solution from burleson was much enough than oracle forum. Hope this below link will help you a lot,

http://dba-oracle.com/t_ora_12514_tns_listener_does_not_currently_know_service_requested.htm[^]

Regards,
BlueSathish
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Solution 3

In order to solve the problem follow the following steps;

>close the sql developer or sql plus window.
>Open Run by pressing (WIndowsButton + R ).
>type in the text field 'services.msc' and run it.
>A new window appears
>In that Services window scroll down and find 'OracleOraDb11g_homeTNSListner',start it if it is not.
>and also start 'OracleServiesORCL',
>Open sql developer and try to establish the connection,If this does not connect Try to create one more connection in sql developer.
>If even this dosent help, try to establish a connection after sometime you will be able to establish a connection.
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