Table of Contents


  1. Preface
  2. Introduction to PowerExchange
  3. DBMOVER Configuration File
  4. Netport Jobs
  5. PowerExchange Message Logs and Destination Overrides
  6. SMF Statistics Logging and Reporting
  7. PowerExchange Security
  8. Secure Sockets Layer Support
  9. PowerExchange Alternative Network Security
  10. PowerExchange Nonrelational SQL
  11. DTLDESCRIBE Metadata
  12. PowerExchange Globalization
  13. Using the PowerExchange ODBC Drivers
  14. PowerExchange Datatypes and Conversion Matrix
  15. Appendix A: DTL__CAPXTIMESTAMP Time Stamps
  16. Appendix B: PowerExchange Glossary



The JOB_START_MINIMUM_BELOWLINE_MEMORY_KB statement specifies the minimum z/OS memory below the 16 MB line that must be present before the PowerExchange Listener on z/OS allows an incoming connection request to start a task.
On z/OS, the following data sources use memory below the 16 MB line:
  • Adabas
  • Datacom
  • IDMS
  • Sequential QSAM files
A minimum of 3000 KB is suitable in most circumstances. In rare situations, such as when message PWX-3207 is written to the log when many concurrent Adabas tasks are running, consider lowering the below-the-line memory limit. However, note that lowering this memory limit increases the risk of S878 abends.
A value from 1200 to 9000 KB
Default is 3000 KB.


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