监听重启之后的短时间会报错ORA-12516

最新推荐文章于 2025-01-07 15:03:08 发布

最新推荐文章于 2025-01-07 15:03:08 发布 · 190 阅读

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本文记录了一次监听重启后出现ORA-12516错误的情况，详细介绍了错误发生的原因及如何通过等待实例动态注册来解决这一问题。

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。