晚上接到電話，客戶的一套核心Oracle RAC資料庫連線不上，連線時報無監聽程式，客戶的Oracle RAC版本為11.1.0.6，平臺為AIX 6.1.05，使用了IBM HACMP 5.5.0.8。

當我遠端過去的時候，發現節點2已經沒有任何oracle使用者的程式，且concurrent的vg沒有啟用，HACMP的服務也offline。

另一個節點Oracle的例項是正常的，且有部分伺服器程式依然在工作，但是本地監聽器出現了故障，導致新的連線無法連線到例項，透過crs_stat -t看到兩個例項的監聽也都是OFFLINE狀態。

在節點上並沒有發現有LISTENER程式，且手動殺掉了所有的伺服器程式，在oracle使用者下啟動監聽時收到以下的報錯：

$ lsnrctl start listener_cdfy740a

LSNRCTL for IBM/AIX RISC System/6000: Version 11.1.0.6.0 - Production on 20-NOV-2014 20:09:09

Copyright (c) 1991, 2007, Oracle. All rights reserved.

Starting /oracle/app/oracle/product/11.1.0/db_1/bin/tnslsnr: please wait...

TNSLSNR for IBM/AIX RISC System/6000: Version 11.1.0.6.0 - Production
System parameter file is /oracle/app/oracle/product/11.1.0/db_1/network/admin/listener.ora
Log messages written to /oracle/app/oracle/diag/tnslsnr/cdfy740a/listener_cdfy740a/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.107.64.1)(PORT=1521)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=10.107.64.1)(PORT=1521)(IP=FIRST)))
TNS-12542: TNS:address already in use
TNS-12560: TNS:protocol adapter error
TNS-00512: Address already in use
IBM/AIX RISC System/6000 Error: 67: Address already in use

Listener failed to start. See the error message(s) above...

10.107.64.1是該節點的vip地址，下面是RAC環境的hosts配置：

10.107.64.1 vip1
10.107.64.2 vip2
10.107.64.3 cdfy740a
10.107.64.4 cdfy740b
172.201.201.1 prv1
172.201.201.2 prv2

手動停掉該節點的nodeapps服務：

cdfy740a@root[/oracle/app/11.1.0/crs/bin]./srvctl stop nodeapps -n cdfy740a

成功停止後，VIP在主機層面已經消失：

cdfy740a@root[/oracle/app/11.1.0/crs/bin]ifconfig -a | more
en0: flags=1e080863,c0
inet 172.200.200.1 netmask 0xffffff00 broadcast 172.200.200.255
tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0
en1: flags=1e080863,c0
inet 172.201.201.1 netmask 0xffffff00 broadcast 172.201.201.255
tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0
en4: flags=5e080863,c0
inet 10.107.64.3 netmask 0xffffff00 broadcast 10.107.64.255
tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0
lo0: flags=e08084b,c0
inet 127.0.0.1 netmask 0xff000000 broadcast 127.255.255.255
inet6 ::1%1/0
tcp_sendspace 131072 tcp_recvspace 131072 rfc1323 1

再次啟動節點nodeapps服務：

cdfy740a@root[/oracle/app/11.1.0/crs/bin]./srvctl start nodeapps -n cdfy740a
CRS-1006: No more members to consider
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:LSNRCTL for IBM/AIX RISC System/6000: Version 11.1.0.6.0 - Production on 20-NOV-2014 20:13:07
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:Copyright (c) 1991, 2007, Oracle. All rights reserved.
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:Starting /oracle/app/oracle/product/11.1.0/db_1/bin/tnslsnr: please wait...
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:TNSLSNR for IBM/AIX RISC System/6000: Version 11.1.0.6.0 - Production
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:System parameter file is /oracle/app/oracle/product/11.1.0/db_1/network/admin/listener.ora
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:Log messages written to /oracle/app/oracle/diag/tnslsnr/cdfy740a/listener_cdfy740a/alert/log.xml
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.107.64.1)(PORT=1521)))
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=10.107.64.1)(PORT=1521)(IP=FIRST)))
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:TNS-12542: TNS:address already in use
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr: TNS-12560: TNS:protocol adapter error
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr: TNS-00512: Address already in use
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr: IBM/AIX RISC System/6000 Error: 67: Address already in use
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:Listener failed to start. See the error message(s) above...
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:LSNRCTL for IBM/AIX RISC System/6000: Version 11.1.0.6.0 - Production on 20-NOV-2014 20:13:08
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:Copyright (c) 1991, 2007, Oracle. All rights reserved.
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=vip1)(PORT=1521)))
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:TNS-12541: TNS:no listener
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr: TNS-12560: TNS:protocol adapter error
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr: TNS-00511: No listener
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr: IBM/AIX RISC System/6000 Error: 79: Connection refused
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=10.107.64.1)(PORT=1521)(IP=FIRST)))
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:TNS-12541: TNS:no listener
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr: TNS-12560: TNS:protocol adapter error
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr: TNS-00511: No listener
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr: IBM/AIX RISC System/6000 Error: 79: Connection refused
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=10.107.64.3)(PORT=1521)(IP=FIRST)))
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr:TNS-12541: TNS:no listener
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr: TNS-12560: TNS:protocol adapter error
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr: TNS-00511: No listener
cdfy740a:ora.cdfy740a.LISTENER_CDFY740A.lsnr: IBM/AIX RISC System/6000 Error: 79: Connection refused
CRS-0215: Could not start resource 'ora.cdfy740a.LISTENER_CDFY740A.lsnr'.

之前使用lsnrctl status listener_cdfy740a檢視監聽器狀態時也收到Connection refused的錯誤。

檢視主機層面已經成功繫結了VIP地址：
cdfy740a@root[/oracle/app/11.1.0/crs/bin]ifconfig -a | more
en0: flags=1e080863,c0
inet 172.200.200.1 netmask 0xffffff00 broadcast 172.200.200.255
tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0
en1: flags=1e080863,c0
inet 172.201.201.1 netmask 0xffffff00 broadcast 172.201.201.255
tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0
en4: flags=5e080863,c0
inet 10.107.64.3 netmask 0xffffff00 broadcast 10.107.64.255
inet 10.107.64.1 netmask 0xffffff00 broadcast 10.107.64.255
tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0
lo0: flags=e08084b,c0
inet 127.0.0.1 netmask 0xff000000 broadcast 127.255.255.255
inet6 ::1%1/0
tcp_sendspace 131072 tcp_recvspace 131072 rfc1323 1

再次嘗試手動啟動本地監聽器：

cdfy740a@root[/]su - oracle
$ lsnrctl start listener_cdfy740a

LSNRCTL for IBM/AIX RISC System/6000: Version 11.1.0.6.0 - Production on 20-NOV-2014 20:18:37

Copyright (c) 1991, 2007, Oracle. All rights reserved.

Starting /oracle/app/oracle/product/11.1.0/db_1/bin/tnslsnr: please wait...

TNSLSNR for IBM/AIX RISC System/6000: Version 11.1.0.6.0 - Production
System parameter file is /oracle/app/oracle/product/11.1.0/db_1/network/admin/listener.ora
Log messages written to /oracle/app/oracle/diag/tnslsnr/cdfy740a/listener_cdfy740a/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.107.64.1)(PORT=1521)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=10.107.64.1)(PORT=1521)(IP=FIRST)))
TNS-12542: TNS:address already in use
TNS-12560: TNS:protocol adapter error
TNS-00512: Address already in use
IBM/AIX RISC System/6000 Error: 67: Address already in use

Listener failed to start. See the error message(s) above...

啟動依然失敗。

檢查監聽器配置檔案：
$ cat listener.ora
# listener.ora.cdfy740a Network Configuration File: /oracle/app/oracle/product/11.1.0/db_1/network/admin/listener.ora.cdfy740a
# Generated by Oracle configuration tools.

LISTENER_CDFY740A =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = vip1)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.107.64.1)(PORT = 1521)(IP = FIRST))
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.107.64.3)(PORT = 1521)(IP = FIRST))
)
)

在監聽配置檔案中，vip1和10.107.64.1是兩個重複的地址，手動將10.107.64.1所在行去掉之後，監聽即可正常的啟動。

之後恢復節點2的HACMP服務，Oracle RAC隨即恢復正常。

另外，還發現客戶的監聽日誌已經被填得很大，大概在1.6GB左右，過大的監聽日誌檔案也會導致監聽器不穩定，這裡將兩個節點的監聽日誌進行了重新命名操作。

《10g RAC監聽器配置檔案listener.ora中的IP=FIRST》：http://blog.itpub.net/23135684/viewspace-715967/
《IP=FIRST作用說明》：

--end--

Oracle RAC Database 11.1.0.6監聽故障案例

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