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JChem Engines cache and memory calculator

Applicable for JChem PostgreSQL Cartridge, JChem Choral and the database module of JChem Microservices

Xmx calculation and performance tuning

This calculator is provided to enable you to find out how much memory does your product need to ensure optimal search performance based on your data size and use cases.

For more information please visit our documentation page: Performance tuning

More information about chemical search types can be found at: here.

More about the JChem engine: cache tuning.

Setting up JPC: with JCHEM_PSQL_OPTS.

If you are interested more in our products, you can download them from
Other solutions to find help.
  • Find more about Java tuning in documentation at Oracle
  • You can also reach out to your ChemAxon sales contact (who has sent you your license) to ask for consultancy