LISTENER中如何使用alter system register解決動(dòng)態(tài)監(jiān)聽注冊(cè)緩慢問(wèn)題

這期內(nèi)容當(dāng)中小編將會(huì)給大家?guī)?lái)有關(guān)LISTENER中如何使用alter system register解決動(dòng)態(tài)監(jiān)聽注冊(cè)緩慢問(wèn)題，文章內(nèi)容豐富且以專業(yè)的角度為大家分析和敘述，閱讀完這篇文章希望大家可以有所收獲。

感受一下Oracle數(shù)據(jù)庫(kù)實(shí)例的動(dòng)態(tài)監(jiān)聽注冊(cè)細(xì)節(jié)。有如下這樣一個(gè)規(guī)律，先總結(jié)在這里：
①如果是先啟動(dòng)監(jiān)聽，后啟動(dòng)數(shù)據(jù)庫(kù)實(shí)例，則動(dòng)態(tài)監(jiān)聽會(huì)自動(dòng)識(shí)別到啟動(dòng)的數(shù)據(jù)庫(kù)實(shí)例；
②在數(shù)據(jù)庫(kù)實(shí)例正常運(yùn)行的情況下重啟監(jiān)聽，則數(shù)據(jù)庫(kù)實(shí)例會(huì)等很長(zhǎng)時(shí)間才能在動(dòng)態(tài)監(jiān)聽中注冊(cè)成功，大約需要1分鐘的等待時(shí)間；
③如果是先啟動(dòng)數(shù)據(jù)庫(kù)實(shí)例，后啟動(dòng)監(jiān)聽，效果和②一樣；
④如果不希望長(zhǎng)時(shí)間等待動(dòng)態(tài)監(jiān)聽注冊(cè)的過(guò)程，可以使用“alter system register;”命令加速。

真實(shí)的體驗(yàn)一下這個(gè)過(guò)程。切身體驗(yàn)之后這些結(jié)論將顯得那樣的自然和純真。

1.第①種場(chǎng)景模擬
1）在數(shù)據(jù)庫(kù)實(shí)例未啟動(dòng)時(shí)啟動(dòng)監(jiān)聽程序
ora11g@secdb /home/oracle$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Tue Jan 18 20:47:22 2011

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

Connected to an idle instance.

NotConnected@> !lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 18-JAN-2011 20:48:58

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                29-DEC-2010 02:03:55
Uptime                    20 days 18 hr. 45 min. 3 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/ora11gR2/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /oracle/ora11gR2/diag/tnslsnr/secdb/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=secdb)(PORT=1521)))
The listener supports no services
The command completed successfully

因?yàn)閿?shù)據(jù)庫(kù)實(shí)例沒(méi)有啟動(dòng)，監(jiān)聽理所當(dāng)然地處于未檢測(cè)到任何實(shí)例的狀態(tài)。

2）啟動(dòng)數(shù)據(jù)庫(kù)實(shí)例
NotConnected@> startup;
ORACLE instance started.

Total System Global Area  535662592 bytes
Fixed Size                  1337720 bytes
Variable Size             411043464 bytes
Database Buffers          117440512 bytes
Redo Buffers                5840896 bytes
Database mounted.
Database opened.

3）隨即查看監(jiān)聽狀態(tài)
sys@ora11g> !lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 18-JAN-2011 20:49:15

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                29-DEC-2010 02:03:55
Uptime                    20 days 18 hr. 45 min. 20 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/ora11gR2/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /oracle/ora11gR2/diag/tnslsnr/secdb/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=secdb)(PORT=1521)))
Services Summary...
Service "ora11g" has 1 instance(s).
  Instance "ora11g", status READY, has 1 handler(s) for this service...
The command completed successfully

第①種場(chǎng)景結(jié)論得到印證：
①如果是先啟動(dòng)監(jiān)聽，后啟動(dòng)數(shù)據(jù)庫(kù)實(shí)例，則動(dòng)態(tài)監(jiān)聽會(huì)自動(dòng)識(shí)別到啟動(dòng)的數(shù)據(jù)庫(kù)實(shí)例；

2.第②種場(chǎng)景模擬
1）手工停啟監(jiān)聽程序
sys@ora11g> !lsnrctl stop

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 18-JAN-2011 20:52:55

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
The command completed successfully

sys@ora11g> !lsnrctl start

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 18-JAN-2011 20:53:03

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Starting /oracle/ora11gR2/product/11.2.0/dbhome_1/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 11.2.0.1.0 - Production
System parameter file is /oracle/ora11gR2/product/11.2.0/dbhome_1/network/admin/listener.ora
Log messages written to /oracle/ora11gR2/diag/tnslsnr/secdb/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=secdb)(PORT=1521)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                18-JAN-2011 20:53:03
Uptime                    0 days 0 hr. 0 min. 0 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/ora11gR2/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /oracle/ora11gR2/diag/tnslsnr/secdb/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=secdb)(PORT=1521)))
The listener supports no services
The command completed successfully

2）每隔一秒檢查一下監(jiān)聽的狀態(tài)
sys@ora11g> !lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 18-JAN-2011 20:53:11

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                18-JAN-2011 20:53:03
Uptime                    0 days 0 hr. 0 min. 7 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/ora11gR2/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /oracle/ora11gR2/diag/tnslsnr/secdb/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=secdb)(PORT=1521)))
The listener supports no services
The command completed successfully

……省略部分狀態(tài)檢查信息……

sys@ora11g> !lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 18-JAN-2011 20:53:14

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                18-JAN-2011 20:53:03
Uptime                    0 days 0 hr. 0 min. 11 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/ora11gR2/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /oracle/ora11gR2/diag/tnslsnr/secdb/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=secdb)(PORT=1521)))
The listener supports no services
The command completed successfully

……省略部分狀態(tài)檢查信息……

sys@ora11g> !lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 18-JAN-2011 20:53:22

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                18-JAN-2011 20:53:03
Uptime                    0 days 0 hr. 0 min. 18 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/ora11gR2/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /oracle/ora11gR2/diag/tnslsnr/secdb/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=secdb)(PORT=1521)))
The listener supports no services
The command completed successfully

……省略部分狀態(tài)檢查信息……

sys@ora11g> !lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 18-JAN-2011 20:53:58

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                18-JAN-2011 20:53:03
Uptime                    0 days 0 hr. 0 min. 55 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/ora11gR2/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /oracle/ora11gR2/diag/tnslsnr/secdb/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=secdb)(PORT=1521)))
The listener supports no services
The command completed successfully

可見，直到20:53:58時(shí)數(shù)據(jù)庫(kù)實(shí)例仍然沒(méi)有注冊(cè)到監(jiān)聽中，此時(shí)距離啟動(dòng)監(jiān)聽的時(shí)候20:53:03已經(jīng)過(guò)去55秒。

最后是在20:53:59成功完成注冊(cè)。
sys@ora11g> !lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 18-JAN-2011 20:53:59

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                18-JAN-2011 20:53:03
Uptime                    0 days 0 hr. 0 min. 56 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/ora11gR2/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /oracle/ora11gR2/diag/tnslsnr/secdb/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=secdb)(PORT=1521)))
Services Summary...
Service "ora11g" has 1 instance(s).
  Instance "ora11g", status READY, has 1 handler(s) for this service...
The command completed successfully

距離啟動(dòng)監(jiān)聽時(shí)間56秒，大約用了1分鐘的時(shí)間才完成數(shù)據(jù)庫(kù)實(shí)例到監(jiān)聽的動(dòng)態(tài)注冊(cè)。

第②種場(chǎng)景結(jié)論得到印證：
②如果是先啟動(dòng)數(shù)據(jù)庫(kù)實(shí)例，后啟動(dòng)監(jiān)聽，則數(shù)據(jù)庫(kù)實(shí)例會(huì)等很長(zhǎng)時(shí)間才能在動(dòng)態(tài)監(jiān)聽中注冊(cè)成功，大約需要1分鐘的等待時(shí)間；

3.第③種場(chǎng)景和第②種場(chǎng)景式樣的，不贅述。

4.第④種場(chǎng)景模擬
模擬這個(gè)場(chǎng)景比較簡(jiǎn)單，只需要連續(xù)執(zhí)行如下這幾條命令即可。
!lsnrctl stop
!lsnrctl start
!lsnrctl status
alter system register;
!lsnrctl status

以下是連續(xù)執(zhí)行后的結(jié)果。

1）停止監(jiān)聽程序
sys@ora11g> !lsnrctl stop

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 18-JAN-2011 21:30:40

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
The command completed successfully

2）啟動(dòng)監(jiān)聽程序
sys@ora11g> !lsnrctl start

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 18-JAN-2011 21:30:44

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Starting /oracle/ora11gR2/product/11.2.0/dbhome_1/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 11.2.0.1.0 - Production
System parameter file is /oracle/ora11gR2/product/11.2.0/dbhome_1/network/admin/listener.ora
Log messages written to /oracle/ora11gR2/diag/tnslsnr/secdb/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=secdb)(PORT=1521)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                18-JAN-2011 21:30:44
Uptime                    0 days 0 hr. 0 min. 0 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/ora11gR2/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /oracle/ora11gR2/diag/tnslsnr/secdb/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=secdb)(PORT=1521)))
The listener supports no services
The command completed successfully

3）查看監(jiān)聽狀態(tài)
sys@ora11g> !lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 18-JAN-2011 21:30:44

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                18-JAN-2011 21:30:44
Uptime                    0 days 0 hr. 0 min. 0 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/ora11gR2/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /oracle/ora11gR2/diag/tnslsnr/secdb/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=secdb)(PORT=1521)))
The listener supports no services
The command completed successfully

此時(shí)，監(jiān)聽未檢測(cè)到數(shù)據(jù)庫(kù)實(shí)例信息。

4）手工強(qiáng)制將數(shù)據(jù)庫(kù)實(shí)例注冊(cè)到監(jiān)聽
sys@ora11g> alter system register;

System altered.

5）最后確認(rèn)監(jiān)聽狀態(tài)
sys@ora11g> !lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 18-JAN-2011 21:30:44

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                18-JAN-2011 21:30:44
Uptime                    0 days 0 hr. 0 min. 0 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/ora11gR2/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /oracle/ora11gR2/diag/tnslsnr/secdb/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=secdb)(PORT=1521)))
Services Summary...
Service "ora11g" has 1 instance(s).
  Instance "ora11g", status READY, has 1 handler(s) for this service...
The command completed successfully

通過(guò)手工注冊(cè)數(shù)據(jù)庫(kù)實(shí)例的方法，立桿見影，實(shí)例旋即注冊(cè)到了監(jiān)聽程序中。

第④種場(chǎng)景結(jié)論得到印證：
④如果不希望長(zhǎng)時(shí)間等待動(dòng)態(tài)監(jiān)聽注冊(cè)的過(guò)程，可以使用“alter system register;”命令加速。

5.小結(jié)
如果您能將這個(gè)過(guò)程“躬親”一下，也許會(huì)有這種很美妙的感覺(jué)：一切都是那樣的自然而和諧。

再次將有關(guān)動(dòng)態(tài)監(jiān)聽的結(jié)論附在這里：
①如果是先啟動(dòng)監(jiān)聽，后啟動(dòng)數(shù)據(jù)庫(kù)實(shí)例，則動(dòng)態(tài)監(jiān)聽會(huì)自動(dòng)識(shí)別到啟動(dòng)的數(shù)據(jù)庫(kù)實(shí)例；
②在數(shù)據(jù)庫(kù)實(shí)例正常運(yùn)行的情況下重啟監(jiān)聽，則實(shí)例會(huì)等很長(zhǎng)時(shí)間才能在動(dòng)態(tài)監(jiān)聽中注冊(cè)成功，大約需要1分鐘的等待時(shí)間；
③如果是先啟動(dòng)數(shù)據(jù)庫(kù)實(shí)例，后啟動(dòng)監(jiān)聽，效果和②一樣；
④如果不希望長(zhǎng)時(shí)間等待動(dòng)態(tài)監(jiān)聽注冊(cè)的過(guò)程，可以使用“alter system register;”命令加速。

上述就是小編為大家分享的LISTENER中如何使用alter system register解決動(dòng)態(tài)監(jiān)聽注冊(cè)緩慢問(wèn)題了，如果剛好有類似的疑惑，不妨參照上述分析進(jìn)行理解。如果想知道更多相關(guān)知識(shí)，歡迎關(guān)注億速云行業(yè)資訊頻道。