Oracle 11gR2 RAC TNS-12542: TNS:address already in use 故障一例

一．问题描述

一朋友在生产库的一个节点上做了一个非常危险的操作，然后该节点的数据库监听出现了异常。

数据库是2个节点的RAC，版本11.2.0.3。

[grid@dave-db1 trace]$ lsnrctl status LISTENER

LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 22-FEB-2013 18:40:27

Copyright (c) 1991, 2011, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date                22-FEB-2013 18:00:03
Uptime                    0 days 0 hr. 40 min. 23 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/11.2.0.3/grid/network/admin/listener.ora
Listener Log File         /oracle/app/grid/diag/tnslsnr/dave-db1/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
The listener supports no services
The command completed successfully

此处显示：The listener supports no services

[grid@dave-db1 trace]$ lsnrctl status LISTENER_SCAN1

LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 22-FEB-2013 18:40:46

Copyright (c) 1991, 2011, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER_SCAN1
Version                   TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date                22-FEB-2013 17:48:19
Uptime                    0 days 0 hr. 52 min. 27 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/11.2.0.3/grid/network/admin/listener.ora
Listener Log File         /oracle/11.2.0.3/grid/log/diag/tnslsnr/dave-db1/listener_scan1/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER_SCAN1)))
The listener supports no services
The command completed successfully

手工注册后，问题依旧：

SQL>alter system register;

节点2上的监听是正常的：

[oracle@dave-db2 admin]$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 22-FEB-2013 18:38:06

Copyright (c) 1991, 2011, Oracle.  All rights reserved.

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date                22-FEB-2013 17:30:45
Uptime                    0 days 1 hr. 7 min. 21 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/11.2.0.3/grid/network/admin/listener.ora
Listener Log File         /oracle/app/grid/diag/tnslsnr/dave-db2/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.106.14)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
  Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "DAVE" has 1 instance(s).
  Instance "dave2", status READY, has 1 handler(s) for this service...
Service "oradb" has 1 instance(s).
  Instance "dave2", status READY, has 1 handler(s) for this service...
Service "oradbXDB" has 1 instance(s).
  Instance "dave2", status READY, has 1 handler(s) for this service...
The command completed successfully

--使用PS 查看监听的进程：

[grid@dave-db1 trace]$ ps -ef|grep LISTENER
grid       421     1  0 17:48 ?        00:00:00 /oracle/11.2.0.3/grid/bin/tnslsnr LISTENER_SCAN1 -inherit
grid      1435     1  0 18:00 ?        00:00:00 /oracle/11.2.0.3/grid/bin/tnslsnr LISTENER -inherit
grid      4482  1333  0 18:39 pts/1    00:00:00 grep LISTENER
grid     14380     1  0  2012 ?        00:02:56 /oracle/11.2.0.3/grid/bin/tnslsnr LISTENER -inherit
grid     15075     1  0  2012 ?        00:03:07 /oracle/11.2.0.3/grid/bin/tnslsnr LISTENER_SCAN1 –inherit

注意1：

这里是有问题的，因为监听的进程出现了2次。我们继续看。

[grid@dave-db2 admin]$ crsctl stat resource -t
--------------------------------------------------------------------------------
NAME           TARGET  STATE        SERVER                   STATE_DETAILS
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
               ONLINE  ONLINE       dave-db1
               ONLINE  ONLINE       dave-db2
ora.LISTENER.lsnr
               ONLINE  INTERMEDIATE dave-db1               Not All Endpoints Registered
               ONLINE  ONLINE       dave-db2
ora.asm
               ONLINE  ONLINE       dave-db1               Started
               ONLINE  ONLINE       dave-db2               Started
ora.gsd
               OFFLINE OFFLINE      dave-db1
               OFFLINE OFFLINE      dave-db2
ora.net1.network
               ONLINE  ONLINE       dave-db1
               ONLINE  ONLINE       dave-db2
ora.ons
               ONLINE  ONLINE       dave-db1
               ONLINE  ONLINE       dave-db2
ora.registry.acfs
               ONLINE  ONLINE       dave-db1
               ONLINE  ONLINE       dave-db2
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  INTERMEDIATE dave-db1               Not All Endpoints Registered
ora.cvu
      1        ONLINE  ONLINE       dave-db1
ora.dave-db1.vip
      1        ONLINE  ONLINE       dave-db1
ora.dave-db2.vip
      1        ONLINE  ONLINE       dave-db2
ora.oc4j
      1        ONLINE  ONLINE       dave-db1
ora.oradb.db
      1        ONLINE  ONLINE       dave-db2               Open
      2        ONLINE  ONLINE       dave-db1               Open
ora.scan1.vip
      1        ONLINE  ONLINE       dave-db1

注意2：

通过crsctl stat resource –t命令，我们可以看到节点1上的ora.LISTENER.lsnr状态是 INTERMEDIATE，和Not All Endpoints Registered 。

[grid@dave-db2 admin]$ crs_stat -t
Name           Type           Target    State     Host
------------------------------------------------------------
ora.DATA.dg    ora....up.type ONLINE    ONLINE    dave-db1
ora....ER.lsnr ora....er.type ONLINE    ONLINE    dave-db1
ora....N1.lsnr ora....er.type ONLINE    ONLINE    dave-db1
ora.asm        ora.asm.type   ONLINE    ONLINE    dave-db1
ora.cvu        ora.cvu.type   ONLINE    ONLINE    dave-db1
ora....SM2.asm application    ONLINE    ONLINE    dave-db1
ora....B1.lsnr application    ONLINE    ONLINE    dave-db1
ora....db1.gsd application    OFFLINE   OFFLINE
ora....db1.ons application    ONLINE    ONLINE    dave-db1
ora....db1.vip ora....t1.type ONLINE    ONLINE    dave-db1
ora....SM1.asm application    ONLINE    ONLINE    dave-db2
ora....B2.lsnr application    ONLINE    ONLINE    dave-db2
ora....db2.gsd application    OFFLINE   OFFLINE
ora....db2.ons application    ONLINE    ONLINE    dave-db2
ora....db2.vip ora....t1.type ONLINE    ONLINE    dave-db2
ora.gsd        ora.gsd.type   OFFLINE   OFFLINE
ora....network ora....rk.type ONLINE    ONLINE    dave-db1
ora.oc4j       ora.oc4j.type  ONLINE    ONLINE    dave-db1
ora.ons        ora.ons.type   ONLINE    ONLINE    dave-db1
ora.oradb.db   ora....se.type ONLINE    ONLINE    dave-db2
ora....ry.acfs ora....fs.type ONLINE    ONLINE    dave-db1
ora.scan1.vip  ora....ip.type ONLINE    ONLINE    dave-db1

Listener.ora 文件内容如下：

[grid@dave-db1 admin]$ more listener.ora
LISTENER_SCAN1=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1))))                # line added by Agent
LISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER))))            # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER=ON              # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_SCAN1=ON                # line added by Agent

二．可能原因

在MOS的文档中有说明：

Listener in INTERMEDIATE status with"Not All Endpoints Registered" [ID 1454439.1]

使用crsctl stat res -t，监听状态显示为INTERMEDIATE。

ora.LISTENER.lsnr
      ONLINE   ONLINE              racdb1
      ONLINE   INTERMEDIATE        racdb2 Not All Endpoints Registered
ora.LISTENER_SCAN1.lsnr
   1   ONLINE  INTERMEDIATE       racdb2    Not All Endpoints Registered

可能的原因如下：

（1） The problem is caused byanother listener defined statically in listener.ora, using the same port and IPis running from the RDBMS ORACLE_HOME, started manually causing the defaultlistener starting from GRID_HOME can not register its endpoint. Hence the errorreported in dbca.

--在ORACLE_HOME的目录下配置了listener.ora，并且使用了相同的IP和端口。在手动的在GRID_HOME下启动默认的监听，就会导致不能注册endpoint.

ps -ef | grep tns:

grid 7222 1 0 Apr26 ? 00:00:13 /u01/app/11.2.0/grid/bin/tnslsnrLISTENER_SCAN1 -inherit
grid 7237 1 0 Apr26 ? 00:00:13 /u01/app/11.2.0/grid/bin/tnslsnrLISTENER -inherit
oracle 7354 1 0 Apr26 ? 00:00:01 /u02/app/oracle/product/11.2.0/db/bin/tnslsnrLISTENER -inherit

我们这里的情况和这里的很类似，不过我们是启动了2个grid下的监听。

(2) Another possible cause is thelistener or scan listener being defined manually in listener.ora, for example:

--另一种可能是listener 或者scan listener 被手工定义在listener.ora中.

LISTENER_SCAN3 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = racnode1)(PORT = 1523))
)

LISTENER_SCAN1 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = racnode1)(PORT = 1521))

注意，这种问题只存在Oracle 11gR2 以后的版本。因为11gR2以后，Oracle 的监听配置发生了变化。这里了解一下即可。关于11gR2 RAC监听的配置，会在单独文章说明。

From 11.2onwards, all listeners should be runing from GRID_HOME, listener andlistener_scan<n> entry should be added automatically into listener.ora,no manual editing is required for TCP definition.

--从Oracle 11gR2 之后，所有的监听都配置在GRID_HOME下，listener 和listener_scan<n> entry 会自动配置到grid 安装用户的listener.ora文件中，而不需要手工配置相关的信息。

三．解决方法

MOS文档提供的解决方法：

1. Stop the listener running from RDBMSORACLE_HOME

$<RDBMS ORACLE_HOME>/bin/lsnrctl stopLISTENER

2. stop the listener from GRID_HOME

$<GRID_HOME>/bin/srvctl stop listener-n <node name>
$<GRID_HOME>/bin/srvctl stop scan_listener -i <scan#>

eg:

$<GRID_HOME>/bin/srvctl stop listener-n racnode1
$<GRID_HOME>/bin/srvctl stop scan_listener -i 1

If above command fails to stop the tnslsnrprocess, please use "kill -9 <pid of tnslsnr>" to stop theLISTENER and LISTENER_SCAN1 process.

3. remove any manually added LISTENER definitionfrom listener.ora if it exists

4. restart the LISTENER andLISTENER_SCAN1 from GRID_HOME

$<GRID_HOME>/bin/srvctl startlistener -n <node name>
$<GRID_HOME>/bin/srvctl start scan_listener -i <scan#>

5. check crsctl stat res -t output, theyboth should show ONLINE status now.

结合前面的说明，我们这里最大的可能是重复存在的监听进程。所以我们这里只需要kill 一组监听即可。然后监听就正常了。

这里，我们kill 掉如下2个进程：

grid 14380 1 0 2012 ? 00:02:56 /oracle/11.2.0.3/grid/bin/tnslsnr LISTENER -inherit
grid 15075 1 0 2012 ? 00:03:07 /oracle/11.2.0.3/grid/bin/tnslsnr LISTENER_SCAN1 –inherit

kill之后，监听恢复正常。

[grid@dave-db1 ~]$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 22-FEB-2013 19:11:06

Copyright (c) 1991, 2011, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date                22-FEB-2013 19:05:06
Uptime                    0 days 0 hr. 6 min. 0 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/11.2.0.3/grid/network/admin/listener.ora
Listener Log File         /oracle/app/grid/diag/tnslsnr/dave-db1/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.106.13)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
  Instance "+ASM2", status READY, has 1 handler(s) for this service...
Service "DAVE" has 1 instance(s).
  Instance "dave1", status READY, has 1 handler(s) for this service...
Service "oradb" has 1 instance(s).
  Instance "dave1", status READY, has 1 handler(s) for this service...
Service "oradbXDB" has 1 instance(s).
  Instance "dave1", status READY, has 1 handler(s) for this service...
The command completed successfully

[grid@dave-db1 ~]$ crsctl stat resource -t
--------------------------------------------------------------------------------
NAME           TARGET  STATE        SERVER                   STATE_DETAILS
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
               ONLINE  ONLINE       dave-db1
               ONLINE  ONLINE       dave-db2
ora.LISTENER.lsnr
               ONLINE  ONLINE       dave-db1
               ONLINE  ONLINE       dave-db2
ora.asm
               ONLINE  ONLINE       dave-db1               Started
               ONLINE  ONLINE       dave-db2               Started
ora.gsd
               OFFLINE OFFLINE      dave-db1
               OFFLINE OFFLINE      dave-db2
ora.net1.network
               ONLINE  ONLINE       dave-db1
               ONLINE  ONLINE       dave-db2
ora.ons
               ONLINE  ONLINE       dave-db1
               ONLINE  ONLINE       dave-db2
ora.registry.acfs
               ONLINE  ONLINE       dave-db1
               ONLINE  ONLINE       dave-db2
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       dave-db1
ora.cvu
      1        ONLINE  ONLINE       dave-db1
ora.dave-db1.vip
      1        ONLINE  ONLINE       dave-db1
ora.dave-db2.vip
      1        ONLINE  ONLINE       dave-db2
ora.oc4j
      1        ONLINE  ONLINE       dave-db1
ora.oradb.db
      1        ONLINE  ONLINE       dave-db2               Open
      2        ONLINE  ONLINE       dave-db1               Open
ora.scan1.vip
      1        ONLINE  ONLINE       dave-db1

[grid@dave-db1 ~]$ lsnrctl status LISTENER_SCAN1

LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 22-FEB-2013 19:12:39

Copyright (c) 1991, 2011, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER_SCAN1
Version                   TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date                22-FEB-2013 17:48:19
Uptime                    0 days 1 hr. 24 min. 20 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/11.2.0.3/grid/network/admin/listener.ora
Listener Log File         /oracle/11.2.0.3/grid/log/diag/tnslsnr/dave-db1/listener_scan1/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER_SCAN1)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.106.15)(PORT=1521)))
Services Summary...
Service "DAVE" has 2 instance(s).
  Instance "dave1", status READY, has 1 handler(s) for this service...
  Instance "dave2", status READY, has 1 handler(s) for this service...
Service "oradb" has 2 instance(s).
  Instance "dave1", status READY, has 1 handler(s) for this service...
  Instance "dave2", status READY, has 1 handler(s) for this service...
Service "oradbXDB" has 2 instance(s).
  Instance "dave1", status READY, has 1 handler(s) for this service...
  Instance "dave2", status READY, has 1 handler(s) for this service...
The command completed successfully