1. Oracle GoldenGate Classic Architecture Documentation
  2. Performance
  3. Tuning the Performance of Oracle GoldenGate
  4. Using Multiple Process Groups
  5. Considerations for Using Multiple Process Groups
  6. Memory

Memory

The system must have sufficient swap space for each Oracle GoldenGate Extract and Replicat process that will be running. To determine the required swap space:

  1. Start up one Extract or Replicat.
  2. Run GGSCI.
  3. View the report file and find the line PROCESS VM AVAIL FROM OS (min).
  4. Round up the value to the next full gigabyte if needed. For example, round up 1.76GB to 2 GB.
  5. Multiply that value by the number of Extract and Replicat processes that will be running. The result is the maximum amount of swap space that could be required

See the CACHEMGR parameter in Parameters and Functions Reference for Oracle GoldenGate for more information about how memory is managed.