oracle+tns+01106,TNS-01106:Listener using listener name already been started
最近在做HACMP雙機(jī)互備切換測試的時候，發(fā)現(xiàn)一個問題：
A節(jié)點(diǎn)的listener端口為1521 ，B節(jié)點(diǎn)的listener端口為1522，為什么兩個節(jié)點(diǎn)的監(jiān)聽要用不同的端口號？
當(dāng)時AB機(jī)使用不同端口是基于如下考慮：
HACMP的切換數(shù)據(jù)庫的過程中，希望同時控制監(jiān)聽的啟動和停止，如果兩個數(shù)據(jù)庫使用同一個監(jiān)聽，考慮如下情況
監(jiān)聽在A機(jī)和B都正常運(yùn)行在1521
A機(jī)故障，db1切換到B機(jī)，先關(guān)閉A機(jī)的監(jiān)聽，文件系統(tǒng)切換到B機(jī)，db1在B機(jī)啟動，啟動監(jiān)聽，提示端口已被占用，可以忽略，因?yàn)锳的實(shí)例會動態(tài)注冊到可用的listener中去。
A機(jī)修復(fù)，db1會優(yōu)先切換回A機(jī)，如果腳本中這時關(guān)閉B機(jī)監(jiān)聽，雖然不會影響B(tài)機(jī)已經(jīng)連接的客戶端，但是如果B機(jī)有新客戶端連接，將不能連接到B機(jī)的數(shù)據(jù)庫。
問題：為什么在一個節(jié)點(diǎn)上不能同時起兩個同一端口的listener呢？(這個問題困惑我好久了，就連做夢都在問為什么?)
回答：其實(shí)不光是不能同時起動端口相同的listener，在listener.ora文件中，同一個KEY值的listener也是不可以同時啟動的，就類似于是listener的唯一標(biāo)識。即IPC addresses(KEY) or TCP port numbers are not duplicated.
在考慮這個問題的過程中，做了一些有關(guān)listener的實(shí)驗(yàn)，在這里與大家分享
1. 一個端口的listener可以注冊多個實(shí)例
(備注：這個當(dāng)然了，比如我們在一個節(jié)點(diǎn)上安裝多個實(shí)例)
e.g.
LSNRCTL> status
正在連接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.15.99)(PORT=1521)))
LISTENER 的 STATUS
------------------------
別名????????????????????? LISTENER
版本????????????????????? TNSLSNR for 32-bit Windows: Version 9.2.0.1.0 - Produc
tion
啟動日期????????????????? 08-6月 -2009 09:17:22
正常運(yùn)行時間????????????? 4 天 0 小時 25 分 6 秒
跟蹤級別????????????????? off
安全性??????????????????? OFF
SNMP????????????????????? OFF
監(jiān)聽器參數(shù)文件????????? d:\oracle\network\admin\listener.ora
監(jiān)聽器日志文件????????? d:\oracle\network\log\listener.log
監(jiān)聽端點(diǎn)概要...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=172.16.15.99)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC0ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=leiz)(PORT=8080))(Presentation=HTTP)
(Session=RAW))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=leiz)(PORT=2100))(Presentation=FTP)(
Session=RAW))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=leiz)(PORT=8080))(Presentation=HTTP)
(Session=RAW))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=leiz)(PORT=2100))(Presentation=FTP)(
Session=RAW))
服務(wù)摘要..
服務(wù) "PLSExtProc" 包含 1 個例程。
例程 "PLSExtProc", 狀態(tài) UNKNOWN, 包含此服務(wù)的 1 個處理程序...
服務(wù) "leiz" 包含 2 個例程。/*實(shí)例LEIZ*/
例程 "leiz", 狀態(tài) UNKNOWN, 包含此服務(wù)的 1 個處理程序.../*靜態(tài)注冊*/
例程 "leiz", 狀態(tài) READY, 包含此服務(wù)的 1 個處理程序.../*動態(tài)注冊*/
服務(wù) "leiz2" 包含 2 個例程。/*實(shí)例LEIZ2*/
例程 "leiz2", 狀態(tài) UNKNOWN, 包含此服務(wù)的 1 個處理程序.../*靜態(tài)注冊*/
例程 "leiz2", 狀態(tài) READY, 包含此服務(wù)的 1 個處理程序.../*動態(tài)注冊*/?? 服務(wù) "leiz2XDB" 包含 1 個例程。
例程 "leiz2", 狀態(tài) READY, 包含此服務(wù)的 1 個處理程序...
服務(wù) "leizXDB" 包含 1 個例程。
例程 "leiz", 狀態(tài) READY, 包含此服務(wù)的 1 個處理程序...
命令執(zhí)行成功
2. 一個實(shí)例可以同時注冊到多個不同端口的listener去
(備注：這個也沒問題，比如一個實(shí)例注冊到多個不同端口的listener中)
e.g.
LSNRCTL> status listener?? 正在連接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.15.99)(PORT=1521)))
LISTENER 的 STATUS
------------------------
別名????????????????????? LISTENER?? 版本????????????????????? TNSLSNR for 32-bit Windows: Version 9.2.0.1.0 - Produc
tion
啟動日期????????????????? 08-6月 -2009 09:17:22
正常運(yùn)行時間????????????? 4 天 0 小時 13 分 14 秒
跟蹤級別????????????????? off
安全性??????????????????? OFF
SNMP????????????????????? OFF
監(jiān)聽器參數(shù)文件????????? d:\oracle\network\admin\listener.ora
監(jiān)聽器日志文件????????? d:\oracle\network\log\listener.log
監(jiān)聽端點(diǎn)概要...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=172.16.15.99)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC0ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=leiz)(PORT=8080))(Presentation=HTTP)
(Session=RAW))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=leiz)(PORT=2100))(Presentation=FTP)(
Session=RAW))
服務(wù)摘要..
服務(wù) "PLSExtProc" 包含 1 個例程。
例程 "PLSExtProc", 狀態(tài) UNKNOWN, 包含此服務(wù)的 1 個處理程序...
服務(wù) "leiz" 包含 2 個例程。
例程 "leiz", 狀態(tài) UNKNOWN, 包含此服務(wù)的 1 個處理程序...
例程 "leiz", 狀態(tài) READY, 包含此服務(wù)的 1 個處理程序...?? 服務(wù) "leizXDB" 包含 1 個例程。
例程 "leiz", 狀態(tài) READY, 包含此服務(wù)的 1 個處理程序...
命令執(zhí)行成功
LSNRCTL> status listener3?? 正在連接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.15.99)(PORT=1522)))
LISTENER 的 STATUS
------------------------
別名????????????????????? LISTENER3?? 版本????????????????????? TNSLSNR for 32-bit Windows: Version 9.2.0.1.0 - Produc
tion
啟動日期????????????????? 08-6月 -2009 09:17:22
正常運(yùn)行時間????????????? 4 天 0 小時 25 分 32 秒
跟蹤級別????????????????? off
安全性??????????????????? OFF
SNMP????????????????????? OFF
監(jiān)聽器參數(shù)文件????????? d:\oracle\network\admin\listener.ora
監(jiān)聽器日志文件????????? d:\oracle\network\log\listener3.log
監(jiān)聽端點(diǎn)概要...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=172.16.15.99)(PORT=1522)))
服務(wù)摘要..
服務(wù) "PLSExtProc" 包含 1 個例程。
例程 "PLSExtProc", 狀態(tài) UNKNOWN, 包含此服務(wù)的 1 個處理程序...
服務(wù) "leiz" 包含 1 個例程。
例程 "leiz", 狀態(tài) UNKNOWN, 包含此服務(wù)的 1 個處理程序...?? 命令執(zhí)行成功
3. 一個節(jié)點(diǎn)不可以同時啟動同樣 IPC keys 或者同樣 listener port number的listener
即Verify IPC addresses or TCP port numbers are not duplicated
a. 一個節(jié)點(diǎn)可以啟動多個不同端口的listener?? e.g.
[oracle@rac1 admin]$ more listener.ora
LISTENER_1522 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac1.domain.com)(PORT = 1522))
)
)
LISTENER_1521 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac1.domain.com)(PORT = 1521))
)
)
SID_LIST_LISTENER_1522 =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1)
(PROGRAM = extproc)
)
(SID_DESC =
(SID_NAME = devdb1)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1)
)
)?????? 一個節(jié)點(diǎn)可以啟動多個不同端口的listener
LSNRCTL> start listener_1521
LSNRCTL> start listener_1522
LSNRCTL> status listener_1521?????????? Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=rac1.domain.com)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias????????????????????listener_1521?????????? Version?????????????????? TNSLSNR for Linux: Version 10.2.0.4.0 - Production
Start Date??????????????? 17-JUN-2009 21:41:39
Uptime??????????????????? 0 days 0 hr. 1 min. 0 sec
Trace Level?????????????? off
Security????????????????? ON: Local OS Authentication
SNMP????????????????????? OFF
Listener Parameter File?? /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Listener Log File???????? /u01/app/oracle/product/10.2.0/db_1/network/log/listener_1521.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rac1.domain.com)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
Instance "+ASM1", status BLOCKED, has 1 handler(s) for this service...
Service "+ASM_XPT" has 1 instance(s).
Instance "+ASM1", status BLOCKED, has 1 handler(s) for this service...
Service "devdb" has 1 instance(s).
Instance "devdb1", status READY, has 1 handler(s) for this service...
Service "devdbXDB" has 1 instance(s).
Instance "devdb1", status READY, has 1 handler(s) for this service...
Service "devdb_XPT" has 1 instance(s).
Instance "devdb1", status READY, has 1 handler(s) for this service...
The command completed successfully
LSNRCTL> status listener_1522?????????? Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=rac1.domain.com)(PORT=1522)))
STATUS of the LISTENER
------------------------
Alias???????????????????? listener_1522?????????? Version?????????????????? TNSLSNR for Linux: Version 10.2.0.4.0 - Production
Start Date??????????????? 17-JUN-2009 21:41:48
Uptime??????????????????? 0 days 0 hr. 0 min. 55 sec
Trace Level?????????????? off
Security????????????????? ON: Local OS Authentication
SNMP????????????????????? OFF
Listener Parameter File?? /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Listener Log File???????? /u01/app/oracle/product/10.2.0/db_1/network/log/listener_1522.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rac1.domain.com)(PORT=1522)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "devdb1" has 1 instance(s).
Instance "devdb1", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
LSNRCTL> stop listener_1521
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=rac1.domain.com)(PORT=1521)))
The command completed successfully
LSNRCTL> stop listener_1522
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=rac1.domain.com)(PORT=1522)))
The command completed successfully
b. 一個節(jié)點(diǎn)不可以同時啟動同樣 listener port number的listener??????????e.g.
[oracle@rac1 admin]$ more listener.ora
LISTENER_1522 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac1.domain.com)(PORT = 1522))
)
)
LISTENER_1521 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac1.domain.com)(PORT = 1522))
)
)
SID_LIST_LISTENER_1522 =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1)
(PROGRAM = extproc)
)
(SID_DESC =
(SID_NAME = devdb1)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1)
)
)???????????? 一個節(jié)點(diǎn)不可以同時啟動同樣 listener port number的listener
LSNRCTL> start listener_1521???????????? Starting /u01/app/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.2.0.4.0 - Production
System parameter file is /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/product/10.2.0/db_1/network/log/listener_1521.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rac1.domain.com)(PORT=1522)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=rac1.domain.com)(PORT=1522)))
STATUS of the LISTENER
------------------------
Alias???????????????????? listener_1521
Version?????????????????? TNSLSNR for Linux: Version 10.2.0.4.0 - Production
Start Date??????????????? 17-JUN-2009 21:46:12
Uptime??????????????????? 0 days 0 hr. 0 min. 0 sec
Trace Level?????????????? off
Security????????????????? ON: Local OS Authentication
SNMP????????????????????? OFF
Listener Parameter File?? /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Listener Log File???????? /u01/app/oracle/product/10.2.0/db_1/network/log/listener_1521.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rac1.domain.com)(PORT=1522)))
The listener supports no services
The command completed successfully
LSNRCTL> start listener_1522???????????? TNS-01106: Listener using listener name listener_1521 has already been started
c.一個節(jié)點(diǎn)不可以同時啟動同樣 IPC keys 的listener???????????? e.g.
[oracle@rac1 admin]$ more listener.ora
LISTENER_1522 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac1.domain.com)(PORT = 1522))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)
)
LISTENER_1521 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac1.domain.com)(PORT = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)
)
SID_LIST_LISTENER_1522 =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1)
(PROGRAM = extproc)
)
(SID_DESC =
(SID_NAME = devdb1)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1)
)
)???????????? 一個節(jié)點(diǎn)不可以同時啟動同樣 IPC keys 的listener
LSNRCTL> start listener_1522???????????? Starting /u01/app/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.2.0.4.0 - Production
System parameter file is /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/product/10.2.0/db_1/network/log/listener_1522.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rac1.domain.com)(PORT=1522)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=rac1.domain.com)(PORT=1522)))
STATUS of the LISTENER
------------------------
Alias???????????????????? listener_1522
Version?????????????????? TNSLSNR for Linux: Version 10.2.0.4.0 - Production
Start Date??????????????? 17-JUN-2009 22:09:40
Uptime??????????????????? 0 days 0 hr. 0 min. 0 sec
Trace Level?????????????? off
Security????????????????? ON: Local OS Authentication
SNMP????????????????????? OFF
Listener Parameter File?? /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Listener Log File???????? /u01/app/oracle/product/10.2.0/db_1/network/log/listener_1522.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rac1.domain.com)(PORT=1522)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "devdb1" has 1 instance(s).
Instance "devdb1", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
LSNRCTL> start listener_1521???????????? Starting /u01/app/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.2.0.4.0 - Production
System parameter file is /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/product/10.2.0/db_1/network/log/listener_1521.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rac1.domain.com)(PORT=1521)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC)))
TNS-12542: TNS:address already in use
TNS-12560: TNS:protocol adapter error
TNS-00512: Address already in use
Linux Error: 98: Address already in use
Listener failed to start. See the error message(s) above...
Symptoms
There are two or more oracle instances in two seperate oracle homes. Both listeners need to run concurrently. When starting a second listener, a TNS-01106 "Listener using listener name %s has already been started" error is received.
Cause
A second listener process attempted to start with the same IPC key, port address as that of an listener already running.
Solution
Verify IPC addresses or TCP port numbers are not duplicated
#listener.ora file for the first listener
LISTENER =
(ADDRESS_LIST =
(ADDRESS= (PROTOCOL= IPC)(KEY= ORCL))
(ADDRESS= (PROTOCOL= IPC)(KEY= PNPKEY))
(ADDRESS= (PROTOCOL= TCP)(Host= jumbo)(Port= 1521))
)
#listener.ora file for the second listener
LISTENER =
(ADDRESS_LIST =
(ADDRESS= (PROTOCOL= IPC)(KEY= ORCL))
(ADDRESS= (PROTOCOL= IPC)(KEY= PNPKEY))
(ADDRESS= (PROTOCOL= TCP)(Host= jumbo)(Port= 1521))
)
The listener.ora file for the 2nd listener example must have different IPC keys from the first listener.ora file and the port number for the TCP address must be different between any other listener definitions.Implement the changes and restart the listeners
參考文獻(xiàn)：
1.Subject:? TNS-01106: "Listener using listener name %s has already been started"
Doc ID:? 102430.1 Type:? PROBLEM
Modified Date :? 22-JAN-2008 Status:? PUBLISHED
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