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  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. PowerExchange Globalization
  12. Using the PowerExchange ODBC Drivers
  13. PowerExchange Datatypes and Conversion Matrix
  14. DTL__CAPXTIMESTAMP Time Stamps
  15. PowerExchange Glossary

DMXCACHE_DELETEECSA Statement

DMXCACHE_DELETEECSA Statement

The DMXCACHE_DELETEECSA statement determines whether PowerExchange frees ECSA memory when data maps caching runs in multiple-jobs mode and no files exist with nonzero use counts in ECSA memory.
z/OS
DM_SUBTASK, DMXCACHE_MAX_MEMORY_MB, and DMXCACHE_MULTIPLEJOBS
No
DMXCACHE_DELETEECSA={
N
|Y}
  • N
    . PowerExchange does not free ECSA memory. Because allocating shared memory is a complex task and 4096 bytes of memory is a small amount, you can accept the default value, which is N, to permanently retain the ECSA memory.
  • Y
    . PowerExchange frees ECSA memory when data maps caching runs in multiple-jobs mode and no files exist with nonzero use counts in ECSA memory.
    To run data maps caching in multiple-jobs mode, set the DMXCACHE_MULTIPLEJOBS statement to Y.
Default is N.