How to Use Oracle Parallel Feature
Oracle Parallel Execution: Concepts, Types, and How to Use Oracle Parallel Execution: Concepts, Types, and How to Use Edition Requirement: Enterprise Edition only. Summary This is kind of a summary of how Oracle Parallel Execution works, when it can be used, and the main features behind Automatic Parallel Degree (AutoDOP) , including automatic DOP , parallel statement queuing , and in-memory parallel execution . I will also lists the types of operations that support parallelism (DDL, DML, DQL), shows practical SQL examples (hints, session-level forcing), and finish with quick queries to monitor parallel sessions. 1) Parallelism Concepts When a parallel statement starts, Oracle creates a coordinator query which acquires the requested number of parallel servers . Required operations (as planned by the optimizer—e.g., a full table scan used in a join) are executed in parallel w...
