在Oracle Database 11gR2中已經廢棄了 Listener Password，11gr2listener

在Oracle Database 11gR2中已經廢棄了 Listener Password，11gr2listener

在Oracle Database 11gR2中已經廢棄了 Listener Password

參考自：Deprecation of Listener Password in Oracle Database 11g Release 2 (文檔 ID 1328725.1)

適用於：
Oracle Net Services - Version 11.2.0.1 to 11.2.0.3 [Release 11.2]
Information in this document applies to any platform.
 checked for currency 8-jul-2013

細節：
在Oracle Database 11gR2中已經廢棄了 Listener Password ，這不會導致安全上的損失，因為身分識別驗證通過本地作業系統身分識別驗證的方式來實施。

行動：
When upgrading to Oracle Database 11g Release 2 (Patch Set 11.2.0.3 and later) , follow the steps below to migrate a listener that has a set password:

1. Remove all PASSWORDS_listener_name entries from the listener.ora file.
2. Reload the listener using the following command: lsnrctl reload listener_name

If remote administration of a listener is required, then use one of the following methods to connect to and administer the listener.
• Connect to the host where listener is running using SSH or other secure method, and then perform local   administration. Local administration is enforced by the operating system authentication.
• Use Oracle Enterprise Manager to administer the listener. Oracle Enterprise Manager uses HTTPS,  which ensures security.

Please note, that this feature will be de-supported in the next major Oracle Database version (currently called 12g) and will then no longer be available.

For more information please refer to the following Oracle Database 11g Release 2 documentation:
Oracle Database Net Services Administrator's Guide (html, pdf) - Chapter 9 'Configuring and Administering Oracle Net Listener'
Oracle Database Net Services Reference (html, pdf) - Appendix B 'Upgrade Considerations for Oracle Net Services'