15.3.5 Prerequisites for the standby node
The prerequisites of the standby node are as follows:
When operating the systems linked with the cluster software, the standby node waits for node switching with the cold standby. The cold standby is a method in which a standby node server is started after the node switching occurs.
- Organization of this subsection
(1) In 1-to-1 node switching systems, mutual node switching systems, and node switching systems for the host unit management model
In 1-to-1 node switching systems, mutual node switching systems, and node switching systems for the host unit management model, Application Server related processes cannot be started in Application Server of the standby node. Therefore, note that you cannot execute the following operations:
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Deploying and undeploying applications in the J2EE server
Includes replacing J2EE applications
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Management operations by the Management Server and the Administration Agent
Also, you cannot access a shared disk device from Application Server of the standby node. When J2EE servers are used and when there is a global transaction, the definition information of the transaction service is stored in the shared disk device. However, you cannot change this definition information from Application Server of the standby node.