【故障|监听】TNS-12545、TNS-12560、TNS-00515和Linux Error: 111: Connection refused
Linux Error: 111: Connection refused
[oracle@edsir4p1-PROD1 ~]$ ps -ef|grep tns
oracle 5462 5357 0 05:22 pts/2 00:00:00 grep tns
[oracle@edsir4p1-PROD1 ~]$ lsnrctl start
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 13-SEP-2017 05:22:24
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Starting /u01/app/oracle/product/11.2.0/dbhome_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 11.2.0.1.0 - Production
System parameter file is /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/diag/tnslsnr/edsir4p1/listener/alert/log.xml
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=edsor4p1.us.oracle.com)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
Linux Error: 111: Connection refused
Listener failed to start. See the error message(s) above...
[oracle@edsir4p1-PROD1 ~]$ more /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
10.190.104.111 edsir4p1.us.oracle.com edsir4p1
10.190.104.28 edsir1p8.us.oracle.com edsir1p8
[oracle@edsir4p1-PROD1 ~]$ more /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# listener.ora Network Configuration File: /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = edsor4p1.us.oracle.com)(PORT = 1521))
)
ADR_BASE_LISTENER = /u01/app/oracle
原因：主机名写错了。应该是edsir4p1.us.oracle.com，而不是edsor4p1.us.oracle.com
修改之后：
[oracle@edsir4p1-PROD1 ~]$ more /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# listener.ora Network Configuration File: /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = edsir4p1.us.oracle.com)(PORT = 1521))
)
ADR_BASE_LISTENER = /u01/app/oracle
[oracle@edsir4p1-PROD1 ~]$ lsnrctl start
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 13-SEP-2017 05:30:08
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Starting /u01/app/oracle/product/11.2.0/dbhome_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 11.2.0.1.0 - Production
System parameter file is /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/diag/tnslsnr/edsir4p1/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=edsir4p1.us.oracle.com)(PORT=1521)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=edsir4p1.us.oracle.com)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date 13-SEP-2017 05:30:08
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File /u01/app/oracle/diag/tnslsnr/edsir4p1/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=edsir4p1.us.oracle.com)(PORT=1521)))
The listener supports no services
The command completed successfully