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Target customers: vector retrieval users. Features released: AnalyticDB for PostgreSQL supports the vector engine optimization feature in vector analysis scenarios such as AIGC and vector retrieval. After the vector engine optimization feature is enabled, the system optimizes the vector analysis parameters but consumes a large amount of memory resources and reduces the number of concurrent queries. Proceed with caution when you enable the feature. The vector engine optimization feature is supported only for AnalyticDB for PostgreSQL V6.0 instances in elastic storage mode that have compute node specifications of 4 cores and 32 GB or more.