LSNRCTL> start LISTENER_DBDOCD01
Starting /data/oracle/product/9.2.0.8/bin/tnslsnr: please wait...

TNSLSNR for IBM/AIX RISC System/6000: Version 9.2.0.8.0 - Production
System parameter file is /data/oracle/product/9.2.0.8/network/admin/listener.ora
Log messages written to /data/oracle/DBDOCD01/admin/cdump/LISTENER_DBDOCD01.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=DBDOCD01)))
Error listening on: (ADDRESS=(COMMUNITY=TCPIP.world)(PROTOCOL=TCP)(Host=sintsdbdocd1.sg.db.com)(Port=1801))
TNS-12542: TNS:address already in use
TNS-12560: TNSrotocol adapter error
TNS-00512: Address already in use
IBM/AIX RISC System/6000 Error: 67: Address already in use

Listener failed to start. See the error message(s) above...


let me know some solns.