Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...

Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...，有需要的朋友可以参考下。

今天将服务器的监听程序重启了一下，重启后成功，但是数据库死活注册不上去，导致客户端没法连接到数据库：

<span style="font-family: Arial, Helvetica, sans-serif;">-- 启动监听[oracle@localhost dbs]$ lsnrctl start</span>

LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 04-FEB-2015 13:43:40Copyright (c) 1991, 2011, Oracle.  All rights reserved.TNS-01106: Listener using listener name LISTENER has already been started[oracle@localhost dbs]$ lsnrctl statusLSNRCTL for Linux: Version 11.2.0.3.0 - Production on 04-FEB-2015 13:43:45Copyright (c) 1991, 2011, Oracle.  All rights reserved.Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))STATUS of the LISTENER------------------------Alias                     LISTENERVersion                   TNSLSNR for Linux: Version 11.2.0.3.0 - ProductionStart Date                04-FEB-2015 13:43:21Uptime                    0 days 0 hr. 0 min. 23 secTrace Level               offSecurity                  ON: Local OS AuthenticationSNMP                      OFFListener Parameter File   /u01/app/oracle/network/admin/listener.oraListener Log File         /u01/app/diag/tnslsnr/localhost/listener/alert/log.xmlListening Endpoints Summary...  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.3.100)(PORT=1521)))Services Summary...Service "CLRExtProc" has 1 instance(s).  Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...Service "orcl" has 1 instance(s).  Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...The command completed successfully

启动后，提示Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...这个提示一般认为很正常，是由于实例没有注册到监听服务中去，于是注册实例 

SQL> alter system register;System altered.

实例已经注册，再来看看监听状态： 

[oracle@localhost dbs]$ lsnrctl startLSNRCTL for Linux: Version 11.2.0.3.0 - Production on 04-FEB-2015 13:43:40Copyright (c) 1991, 2011, Oracle.  All rights reserved.TNS-01106: Listener using listener name LISTENER has already been started[oracle@localhost dbs]$ lsnrctl statusLSNRCTL for Linux: Version 11.2.0.3.0 - Production on 04-FEB-2015 13:43:45Copyright (c) 1991, 2011, Oracle.  All rights reserved.Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))STATUS of the LISTENER------------------------Alias                     LISTENERVersion                   TNSLSNR for Linux: Version 11.2.0.3.0 - ProductionStart Date                04-FEB-2015 13:43:21Uptime                    0 days 0 hr. 0 min. 23 secTrace Level               offSecurity                  ON: Local OS AuthenticationSNMP                      OFFListener Parameter File   /u01/app/oracle/network/admin/listener.oraListener Log File         /u01/app/diag/tnslsnr/localhost/listener/alert/log.xmlListening Endpoints Summary...  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.3.100)(PORT=1521)))Services Summary...Service "CLRExtProc" has 1 instance(s).  Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...Service "orcl" has 1 instance(s).  Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...The command completed successfully

发现orcl 还是未知状态（Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...），查看监听配置是否有问题 

--监听文件的内容[oracle@localhost admin]$ pwd/u01/app/oracle/network/admin[oracle@localhost admin]$ more listener.ora # listener.ora Network Configuration File: /u01/app/oracle/network/admin/listener.ora# Generated by Oracle configuration tools.SID_LIST_LISTENER =  (SID_LIST =    (SID_DESC =      (SID_NAME = CLRExtProc)      (ORACLE_HOME = /u01/app/oracle)      (PROGRAM = extproc)    )     (SID_DESC =      (GLOBAL_DBNAME = orcl)      (ORACLE_HOME = /u01/app/oracle)      (SID_NAME = orcl)     )  )LISTENER =  (DESCRIPTION_LIST =    (DESCRIPTION =      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))      (ADDRESS = (PROTOCOL = TCP)(HOST =192.168.3.100)(PORT = 1521))    )  )ADR_BASE_LISTENER = /u01/app

监听文件貌似没有问题，因为我之前是没有问题，看看前面监听的日志： 

[oracle@localhost admin]$ tail -30 /u01/app/diag/tnslsnr/localhost/listener/alert/log.xml<msg time='2015-02-04T13:43:21.139+08:00' org_id='oracle' comp_id='tnslsnr' type='UNKNOWN' level='16' host_id='localhost.localdomain' host_addr='::1'> <txt>WARNING: Subscription for node down event still pending </txt></msg><msg time='2015-02-04T13:43:21.140+08:00' org_id='oracle' comp_id='tnslsnr' type='UNKNOWN' level='16' host_id='localhost.localdomain' host_addr='::1'> <txt>04-FEB-2015 13:43:21 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=localhost.localdomain)(USER=oracle))(COMMAND=status)(ARGUMENTS=64)(SERVICE=LISTENER)(VERSION=186647296)) * status * 0 </txt></msg><msg time='2015-02-04T13:43:40.091+08:00' org_id='oracle' comp_id='tnslsnr' type='UNKNOWN' level='16' host_id='localhost.localdomain' host_addr='::1'> <txt>04-FEB-2015 13:43:40 * ping * 0 </txt></msg><msg time='2015-02-04T13:43:45.083+08:00' org_id='oracle' comp_id='tnslsnr' type='UNKNOWN' level='16' host_id='localhost.localdomain' host_addr='::1'> <txt>WARNING: Subscription for node down event still pending </txt></msg><msg time='2015-02-04T13:43:45.084+08:00' org_id='oracle' comp_id='tnslsnr' type='UNKNOWN' level='16' host_id='localhost.localdomain' host_addr='::1'> <txt>04-FEB-2015 13:43:45 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=localhost.localdomain)(USER=oracle))(COMMAND=status)(ARGUMENTS=64)(SERVICE=LISTENER)(VERSION=186647296)) * status * 0 </txt>

发现监听在启动时，读取了主机名：localhost.localdomain ，个人感觉应该是主机名解析有问题，于是看看hosts文件 

[root@localhost oracle]# hostnamelocalhost.localdomain[root@localhost oracle]# more /etc/hosts127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4::1         localhost localhost.localdomain localhost6 localhost6.localdomain6192.168.3.100 localhost.localdomain

发现三个IP都对应了机器名localhost.localdomain ，可能这种情况导致监听无法解析导致数据库不能注册到监听程序中 

[root@localhost oracle]# more /etc/hosts#127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4172.0.0.1   localhost192.168.3.100 localhost.localdomain#::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

然后再重启监听程序 

[oracle@localhost dbs]$ lsnrctlLSNRCTL for Linux: Version 11.2.0.3.0 - Production on 04-FEB-2015 15:10:10Copyright (c) 1991, 2011, Oracle.  All rights reserved.Welcome to LSNRCTL, type "help" for information.LSNRCTL> stopConnecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))The command completed successfullyLSNRCTL> startStarting /u01/app/oracle/bin/tnslsnr: please wait...TNSLSNR for Linux: Version 11.2.0.3.0 - ProductionSystem parameter file is /u01/app/oracle/network/admin/listener.oraLog messages written to /u01/app/diag/tnslsnr/localhost/listener/alert/log.xmlListening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.3.100)(PORT=1521)))Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))STATUS of the LISTENER------------------------Alias                     LISTENERVersion                   TNSLSNR for Linux: Version 11.2.0.3.0 - ProductionStart Date                04-FEB-2015 15:10:29Uptime                    0 days 0 hr. 0 min. 0 secTrace Level               offSecurity                  ON: Local OS AuthenticationSNMP                      OFFListener Parameter File   /u01/app/oracle/network/admin/listener.oraListener Log File         /u01/app/diag/tnslsnr/localhost/listener/alert/log.xmlListening Endpoints Summary...  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.3.100)(PORT=1521)))Services Summary...Service "CLRExtProc" has 1 instance(s).  Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...Service "orcl" has 1 instance(s).  Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...The command completed successfullyLSNRCTL>

实例注册后，再看看监听状态

LSNRCTL> statusConnecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))STATUS of the LISTENER------------------------Alias                     LISTENERVersion                   TNSLSNR for Linux: Version 11.2.0.3.0 - ProductionStart Date                04-FEB-2015 15:10:29Uptime                    0 days 0 hr. 1 min. 29 secTrace Level               offSecurity                  ON: Local OS AuthenticationSNMP                      OFFListener Parameter File   /u01/app/oracle/network/admin/listener.oraListener Log File         /u01/app/diag/tnslsnr/localhost/listener/alert/log.xmlListening Endpoints Summary...  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.3.100)(PORT=1521)))Services Summary...Service "CLRExtProc" has 1 instance(s).  Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...Service "orcl" has 1 instance(s).  Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...Service "orcl.localdomain" has 1 instance(s).  Instance "orcl", status READY, has 1 handler(s) for this service...Service "orcl11gXDB.localdomain" has 1 instance(s).  Instance "orcl", status READY, has 1 handler(s) for this service...The command completed successfully

发现实例已经处于ready状态了。

OK，到此，客户端已经可以连接到数据库了

转自：http://blog.csdn.net/csdnones/article/details/72903344