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, 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.
Standby operation using Oracle Data Guard/Oracle Active Data Guard
In the standby operation using Oracle Data Guard, the operation node and the standby node exist on the primary site and the standby site. Oracle Database operates in the operation node of each site. In the event of a failure, userApplication is switched to the standby node, and the resources in this standby node become activated.
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, 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.
Information
For further details about the operation modes of Standby operation and Single-Node Cluster operation, refer to "PRIMECLUSTER Installation and Administration Guide".
Multitenant configuration
The multitenant configuration is supported by the standby operation or the single-Node Cluster operation. The starting, the stopping and the monitoring of CDB are the same as Oracle instance. After CDB is started, PDBs are started. When fault of PDBs is detected, the message is output to syslog. The restart and the failover due to fault of PDBs is not executed.
1-252 PDBs (upper bound of Oracle Database) can be managed.
The single tenant configuration with only one PDB in CDB is supported.
