oracle 官方文档对gsd的解释如下 ：
The Global Services Daemon
The Global Services Daemon (GSD) runs on each node with one GSD process
per node. The GSD coordinates with the cluster manager to receive
requests from clients such as the DBCA, EM, and the SRVCTL utility to
execute administrative job tasks such as instance startup or shutdown.
The GSD is not an Oracle instance background process and is therefore
not started with the Oracle instance.
来自 “ ITPUB博客 ” ，链接：http://blog.itpub.net/90618/viewspace-611714/，如需转载，请注明出处，否则将追究法律责任。