Updating array using multiple threads java

When executing a parallel operation, the parallel execution coordinator obtains parallel execution servers from the pool and assigns them to the operation.

If necessary, Oracle can create additional parallel execution servers for the operation.

You can also implement parallel execution on certain types of online transaction processing (OLTP) and hybrid systems.Oracle can process a parallel operation with fewer than the requested number of processes.If all parallel execution servers in the pool are occupied and the maximum number of parallel execution servers has been started, the parallel execution coordinator switches to serial processing.These parallel execution servers remain with the operation throughout job execution, then become available for other operations.After the statement has been processed completely, the parallel execution servers return to the pool.

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To execute a query in parallel, Oracle generally creates a producer queue server and a consumer server.

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