看此博客 ORACLE-RAC-ora.gsd offline_ITPUB博客
以下截图是11gRAC
官方文档的解释是：gsd 是为了兼容9i rac用的，10g之后不用启动，也没必要启动
Applies to:
Oracle Database - Enterprise Edition - Version 10.1.0.2 to 11.2.0.0 [Release 10.1 to 11.2]
Information in this document applies to any platform.
***Checked for relevance on 11-Mar-2013***
Purpose
The purpose of this document is to clarify the functionality of GSD in 10g and above.
Scope
This article is informational and intended for any user.
Details
The function of GSD (10g and above) is to service requests for 9i RAC management clients and therefore when there are no 9i databases present, there is nothing for GSD to do. Consequently, there will be no impact on a RAC cluster if GSD is offline and 9i is not used.
If gsd fails to start due to whetever reasons then best thing is to work with Oracle support to analyze and fix the issue. Until that time, gsd can be temporarily disabled.
In 11.2 GSD is disabled by default and the service will show as target:offline, status:offline.
