Tag Archives: ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

I got ” TNS-01151: Missing listener name, LISTENER_SCAN3, in LISTENER.ORA ”  error in Oracle database.

Hi, Sometimes You can get “TNS-12545: Connect failed because target host or object does not exist ” error.

Hi, Sometimes You can get “TNS-12528: TNS:listener: all appropriate instances are blocking new connections ” error.

Hi, Sometimes You can get “ORA-12528: TNS:listener: all appropriate instances are blocking new connections ” error.

Hi, Sometimes You can get “ORA-12526: TNS:listener: all appropriate instances are in restricted mode ” error.

Hi, Sometimes You can get “TNS-12526: TNS:listener: all appropriate instances are in restricted mode ” error.

Hi, Sometimes You can get “ORA-12520: TNS:listener could not find available handler for requested type of server ” error.

Hi, Sometimes You can get “TNS-12520: TNS:listener could not find available handler for requested type of server  ” error.

Hi, Sometimes You can get “ORA-12518: TNS:listener could not hand off client connection  ” error.

Hi, Sometimes You can get “TNS-12518: TNS:listener could not hand off client connection  ” error.