This content has been marked as final. Show 1 reply
Please post the connection string you use and, from the database server, the result of "lsnrctl services".
$ oerr ora 12505 12505, 00000, "TNS:listener does not currently know of SID given in connect descriptor" // *Cause: The listener received a request to establish a connection to a // database or other service. 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. This may be a temporary condition // such as after the listener has started, but before the database instance // has registered with the listener. // *Action: // - Wait a moment and try to connect a second time. // - Check which instances are currently known by the listener by executing: // lsnrctl services <listener name> // - Check that the SID parameter in the connect descriptor specifies // an instance known by the listener. // - Check for an event in the listener.log file. $