notification dll has not been registered

Wait a moment and try to connect a second time. This may be a temporary condition such as after the listener has started, but before the database instance has registered with the listener. The connect descriptor received by the listener specified a SID for an instance (usually a database instance) that either has not yet dynamically registered with the listener or has not been statically configured for the listener. The listener received a request to establish a connection to a database or other service. ORA-12505: TNS:listener does not currently know of SID given in connect descriptor If using a service name, Check that the connect descriptor corresponding to the service name in TNSNAMES.ORA has a SERVICE_NAME or SID component in the CONNECT_DATA. This should be done by the LISTENER administrator. Reload the listener parameter file using reload.

Configure DEFAULT_SERVICE parameter in LISTENER.ORA with a valid service name. The listener was not configured with a default service and SERVICE_NAME was missing from the CONNECT_DATA received by the listener. ORA-12504: TNS:listener was not given the SERVICE_NAME in CONNECT_DATA Invalid REGION was passed to the listener.Ĭheck the REGION name specified in the CONNECT_DATA component of the connect descriptor. ORA-12503: TNS:listener received an invalid REGION from client No CONNECT_DATA was passed to the listener.Ĭheck that the service name resolved from TNSNAMES.ORA has the CONNECT_DATA component of the connect descriptor. ORA-12502: TNS:listener received no CONNECT_DATA from client If error persists, contact Oracle Customer Support. Please check that the correct Protocol Adapter are successfully linked.

The Oracle Protocol Adapter that is being called may not be installed on the local hard drive.

Ensure that the ORACLE environment is specified correctly in LISTENER.ORA. Verify that the ORACLE Server executable is present and has execute permissions enabled. Turn on tracing at the ADMIN level and reexecute the operation. The executable could not be found or the environment may be set up incorrectly. The process of starting up a dedicated server process failed. ORA-12500: TNS:listener failed to start a dedicated server process

Notification dll has not been registered