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Configuring Grid Link Data Source for Dept1_Cluster1
Grid Link Data Source
A Grid Link data source includes the features of generic data sources plus the following support
for Oracle RAC:
■
“Fast Connection Failover” on page 235
■
“Runtime Connection Load Balancing” on page 235
■
■
■
“Secure Communication using Oracle Wallet” on page 236
Fast Connection Failover
A Grid Link data source uses Fast Connection Failover to:
■
Provide rapid failure detection.
■
Abort and remove invalid connections from the connection pool.
■
Perform graceful shutdown for planned and unplanned Oracle RAC node outages. The
data source allows in-progress transactions to complete before closing connections. New
requests are load balanced to an active Oracle RAC node.
■
Adapt to changes in topology, such as adding a new node.
■
Distribute runtime work requests to all active Oracle RAC instances.
See Fast Connection Failover in the
Oracle Database JDBC Developer's Guide and Reference
at:
http://docs.oracle.com/cd/B19306_01/java.102/b14355/fstconfo.htm
.
Runtime Connection Load Balancing
Runtime Connection Load Balancing allows WebLogic Server to:
■
Adjust the distribution of work based on back end node capacities such as CPU, availability,
and response time.
■
React to changes in Oracle RAC topology.
■
Manage pooled connections for high performance and scalability.
If FAN (Fast Application Notification) is not enabled, Grid link data sources use a round-robin
load balancing algorithm to allocate connections to Oracle RAC nodes.
Configuring Exalogic Software
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Summary of Contents for SuperCluster T5-8
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