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Oracle Fusion Middleware Java API Reference for Oracle TopLink 11g Release 1 (11.1.1) E28847-01 |
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@Target(value={TYPE,METHOD,FIELD})
@Retention(value=RUNTIME)
public @interface RoundRobinPartitioning
RoundRobinPartitioning sends requests in a round robin fashion to the set of connection pools. It is for load-balancing read queries across a cluster of database machines. It requires that the full database be replicated on each machine, so does not support partitioning. The data should either be read-only, or writes should be replicated on the database.
Partitioning can be enabled on an Entity, relationship, query, or session/persistence unit. Partition policies are globally named to allow reuse, the partitioning policy must also be set using the @Partitioned annotation to be used.
Partitioned
, RoundRobinPartitioningPolicy
Required Element Summary | |
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java.lang.String |
name The name of the partition policy, names must be unique for the persistence unit. |
Optional Element Summary | |
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java.lang.String[] |
connectionPools List of connection pool names to load balance across. |
boolean |
replicateWrites This allows for a set of database to be written to and kept in synch, and have reads load-balanced across the databases. |
Element Detail |
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public abstract java.lang.String name
public abstract java.lang.String[] connectionPools
public abstract boolean replicateWrites
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