We are going to look at the necessary steps that are required to remove a successful Grid Infrastructure configuration or reconfigure a failed Grid Infrastructure configuration.
You may find that it is necessary to remove the Grid Infrastructure configuration for technical or non-technical reasons. Keep in mind that to remove a successful configuration, you are required to perform a two-step action:
Firstly, stop any active databases running on the node, followed by an ASM instance. You could use the
SRVCTL STOP DATABASE/ASM or the SQLPLUS command ...