This subsection provides an overview of the processing performed by HA Monitor and HA Monitor Kit when an error occurs in a server (Oracle instance or Oracle listener). Note that the figures used in this subsection show examples in which an Oracle instance or an Oracle listener is associated with a single server.
The following figure provides an overview of the processing performed by HA Monitor and HA Monitor Kit when an error occurs in an Oracle instance.
Figure 2-13 Overview of processing for performing hot standby when an error occurs in an Oracle instance
#1: HA Monitor executes the server termination command.
#2: When a single server is used to control multiple Oracle instances, the flow of processing described in this subsection is repeated as many times as there are Oracle instances.
#3: Executed to allow an IP address for client connection to be included in the server resources. For details about the resources required by servers, see 3.1.2 Resource configuration considerations and 3.2.6 Setting up the shared resources to be used by Oracle.
#4: HA Monitor executes the server start command.
The following figure provides an overview of the processing performed by HA Monitor and HA Monitor Kit when an error occurs in an Oracle listener.
Figure 2-14 Overview of processing for performing hot standby when an error occurs in an Oracle listener
#1: HA Monitor executes the server termination command.
#2: When a single server is used to control multiple Oracle listeners, the flow of processing described in this subsection is repeated as many times as there are Oracle listeners.
#3: Executed to allow an IP address for client connection to be included in the server resources. For details about the resources required by servers, see 3.1.2 Resource configuration considerations and 3.2.6 Setting up the shared resources to be used by Oracle.
#4: HA Monitor executes the server start command.