Standby operation
In standby operation, a cluster system consists of an operating node and standby nodes. On the operating node, the resources such as Oracle applications, a logical IP address and shared disks are active. On the standby node, these resources are inactive. In the event of a failure, userApplication is switched to the standby node, and the resources in this standby node become activated. Then, the client can connect itself to the operating node using the logical IP address without changing any settings.
Note
In order to use Oracle ASM of Oracle Database 11g R2/12c R1, it is necessary to install Oracle Grid Infrastructure. When installing Oracle Grid Infrastructure, the composition which separates the installation user of Oracle Database and the installation user of Oracle Grid Infrastructure is supported. The composition which creating one user is not supported.
A different directory must be assigned respectively for an ORACLE_BASE of the installation user of Oracle Database and an ORACLE_BASE of the installation user of Oracle Grid Infrastructure.
When using Oracle ASM of Oracle database 11g R2/12c R1 in standby operation, database services are not available.
Single-Node Cluster operation
In Single-Node Cluster operation, a cluster system consists of one node.
The status of Oracle database is monitored. Oracle database operation can be continued by restarting Oracle database automatically if Oracle database failures are detected.
Note
In order to use Oracle ASM of Oracle Database 11g R2/12c R1, it is necessary to install Oracle Grid Infrastructure. When installing Oracle Grid Infrastructure, the composition which separates the installation user of Oracle Database and the installation user of Oracle Grid Infrastructure is supported. The composition which creating one user is not supported.
A different directory must be assigned respectively for an ORACLE_BASE of the installation user of Oracle Database and an ORACLE_BASE of the installation user of Oracle Grid Infrastructure.
When using Oracle ASM of Oracle database 11g R2/12c R1 in single-node cluster operation, database services are not available.
Information
For further details about the operation modes of Standby operation and Single-Node Cluster operation, refer to "PRIMECLUSTER Installation and Administration Guide".
