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MySQL HeatWave User Guide
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MySQL HeatWave User Guide  /  ...  /  VARLEN Column Memory Requirements VARLEN Column Memory Requirements

  • For HeatWave nodes, a VARLEN encoded column value requires enough memory for the data plus two bytes for length information. Internal fragmentation or headers can affect the actual amount of memory required.

  • There is no memory requirement on the MySQL DB System node, apart from a small memory footprint for metadata.