After the IP address of the oracle server is changed, the listener cannot process it.

After the IP address of the oracle server is changed, the following error is reported when the listener is started after the IP address of the oracle server is changed:

<Txt> TNS-12542: TNS: address already in use TNS-12560: TNS: protocol adapter error TNS-00512: Address already in use Linux Error: 98: address already in use Modify/etc/hosts [oracle @ localhost ~] $ More/etc/hosts #127.0.0.1 localhost. localdomain localhost4 localhost4.localdomain4 #: 1 localhost. localdomain localhost6 localhost6.localdomain6 # 192.168.1.20.localhost localhost. localdomain localhost4 localhost4.localdoma # 192.168.1.20.www. fbird. cn124.232.153.226 (the modified IP address here) localhost. localdomain [oracle @ localhost ~] $ More/etc/sysconfig/networkNETWORKING = yesHOSTNAME = localhost. localdomain -- hostname must be consistent with the host name [oracle @ localhost admin] $ more listener. ora # listener. ora Network Configuration File:/u01/app/oracle/product/11.2.0/db_1/network/admin/listener. ora # Generated by Oracle configuration tools. LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP) (HOST = localhost. localdomain -- the same as the host name) (PORT = 1521) ADR_BASE_LISTENER =/u01/app/oracle [oracle @ localhost admin] $ lsnrctl statusLSNRCTL for Linux: version 11.2.0.1.0-Production on 28-SEP-2013 12: 41: 04 Copyright (c) 1991,200 9, Oracle. all rights reserved. connecting to (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP) (HOST = localhost. localdomain) (PORT = 1521) STATUS of the LISTENER ------------------------ Alias LISTENERVersion TNSLSNR for Linux: Version 11.2.0.1.0-ProductionStart Date 28-SEP-2013 12: 30: 30 Uptime 0 days 0 hr. 10 min. 33 secTrace Level offSecurity ON: Local OS AuthenticationSNMP OFFListener Parameter File/u01/app/oracle/product/11.2.0/db_1/network/admin/listener. oraListener Log File/u01/app/oracle/diag/tnslsnr/localhost/listener/alert/log. xmlListening Endpoints Summary... (DESCRIPTION = (ADDRESS = (PROTOCOL = tcp) (HOST = localhost) (PORT = 1521) Services Summary... service "orcl" has 1 instance (s ). instance "orcl", status READY, has 1 handler (s) for this service... service "orclXDB" has 1 instance (s ). instance "orcl", status READY, has 1 handler (s) for this service... the command completed successfully