监听刚刚重启之后的一段时间会报错:
SQL> conn system/www@testrac
ERROR:
ORA-12516: TNS: 监听程序找不到符合协议堆栈要求的可用处理程序
此时查看监听状态:
[oracle@ractest4 ~]$ lsnrctl status
LSNRCTL for Linux: Version 11.1.0.6.0 - Production on 26-DEC-2013 09:15:20
Copyright (c) 1991, 2007, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER_RACTEST4
Version TNSLSNR for Linux: Version 11.1.0.6.0 - Production
Start Date 26-DEC-2013 09:14:18
Uptime 0 days 0 hr. 1 min. 2 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /app/db_1/network/admin/listener.ora
Listener Log File /app/diag/tnslsnr/ractest4/listener_ractest4/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=20.18.15.170)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=20.18.15.135)(PORT=1521)))
Services Summary...
Service "rac" has 1 instance(s).
Instance "rac1", status READY, has 1 handler(s) for this service...
Service "racXDB" has 1 instance(s).
Instance "rac1", status READY, has 1 handler(s) for this service...
Service "rac_XPT" has 1 instance(s).
Instance "rac1", status READY, has 1 handler(s) for this service...
The command completed successfully
发现本节点的实例还未动态注册进来,这种报错会持续到实例完成动态注册:
[oracle@ractest4 ~]$ lsnrctl status
LSNRCTL for Linux: Version 11.1.0.6.0 - Production on 26-DEC-2013 09:15:49
Copyright (c) 1991, 2007, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER_RACTEST4
Version TNSLSNR for Linux: Version 11.1.0.6.0 - Production
Start Date 26-DEC-2013 09:14:18
Uptime 0 days 0 hr. 1 min. 31 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /app/db_1/network/admin/listener.ora
Listener Log File /app/diag/tnslsnr/ractest4/listener_ractest4/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=20.18.15.170)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=20.18.15.135)(PORT=1521)))
Services Summary...
Service "rac" has 2 instance(s).
Instance "rac1", status READY, has 1 handler(s) for this service...
Instance "rac2", status READY, has 2 handler(s) for this service...
Service "racXDB" has 2 instance(s).
Instance "rac1", status READY, has 1 handler(s) for this service...
Instance "rac2", status READY, has 1 handler(s) for this service...
Service "rac_XPT" has 2 instance(s).
Instance "rac1", status READY, has 1 handler(s) for this service...
Instance "rac2", status READY, has 2 handler(s) for this service...
The command completed successfully
实例完成动态注册之后,连接时不再报错ORA-12516。
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