Hey List, I think I found my problem - but have no idea how to solve.... When checking the CMAN log's I found (CONNECT_DATA=(SERVICE_NAME=red.domain.de)(CID=(PROGRAM=sqlplus@red)(HOST=red)(USER=root))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.2.2)(PORT=17604)) * establish * red.domain.de * 12514 the HOST is my client - so of course "TNS:listener does not currently know of service requested in connect" But why does CMAN connects to the client? cheers, -----Original Message----- Sent: Dienstag 25.04.06 13:55:00 Subject: Re: beginners questions regarding CMAN >That means the listener does not know what you are trying to connect to, >what is the output of lsnrctl status on the server? > >On 25/04/06, Mathias Diehl <md@xxxxxxxxxxxxx> wrote: >> >> but sqlplus does complains >> >> >> ERROR: >> ORA-12514: TNS:listener does not currently know of service requested in >> connect >> descriptor >> > -- //www.freelists.org/webpage/oracle-l