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  1. Preface
  2. Introduction to PowerExchange Utilities
  3. createdatamaps - Data Map Creation Utility
  4. DTLCCADW - Adabas PCAT Utility
  5. DTLCUIML - IMS Log Marker Utility
  6. DTLINFO - Release Information Utility
  7. DTLINFOX - Enhanced Release Information Utility
  8. DTLREXE - Remote Execution Utility
  9. DTLUAPPL - Restart Token Utility
  10. DTLUCBRG - Batch Registration Utility
  11. DTLUCDEP - CDEP Maintenance Utility
  12. DTLUCSR2 - IDMS SR2 and SR3 Records Utility
  13. DTLUCUDB - DB2 for Linux, UNIX, and Windows CDC Utility
  14. DTLULCAT and DTLULOGC - IDMS Log Catalog Utilities
  15. DTLURDMO - Data Map Utility
  16. DTLUTSK - Task Control Utility
  17. EDMLUCTR - Log Scan and Print Utility
  18. EDMUOPTS - Service Aid Utility
  19. EDMXLUTL - Event Marker Utility
  20. HOSTENT - TCP/IP Address Reporter Utility
  21. PWXCATMY - MySQL Catalog Utility
  22. PWXUCCLPRT - Print Log Summary Utility
  23. PWXUCDCT - Logger for Linux, UNIX, and Windows Utility
  24. PWXUCREG - Capture Registration Utility
  25. PWXUMAP - Map List Utility
  26. PWXUCRGP - Capture Registrations Print Utility
  27. PWXUDMX - Data Maps Update Time ECSA Memory Utility
  28. PWXUGSK - SSL Reporting Utility
  29. PWXUSSL - PowerExchange SSL Reporting Utility
  30. WRKJRNLCKE- Journal Lock Table Utility for IBM i

Suspending Change Data Capture by z/OS ECCRs

Suspending Change Data Capture by z/OS ECCRs

To suspend change data capture by the z/OS ECCRs, use the SUSPEND_REGISTRATION command. The command suspends the capture registrations for the sources.
You can suspend change capture for the following z/OS ECCRs:
  • Adabas ECCR
  • Datacom table-based ECCR
  • IDMS log-based ECCR
  • IMS log-based ECCR
Suspending capture registrations temporarily stops change capture activity for registered sources during a suspension window. You can reactivate the suspended capture registrations later to resume change data capture. Temporarily suspending change data capture has many uses, for example:
  • Skip all change records in the change stream that have timestamps earlier than the current system time when starting change capture for a registration that has been activated for the first time from the PowerExchange Navigator.
  • You can suspend change capture while you make DDL changes, such as cascade delete or delete all row changes or while you make corrections to a source or target object.
When you use the PWXUCREG utility to change the registration status, it sets suspension and activation timestamps. The period bounded by the suspension and activation timestamps is called the
suspension window
.
You must refresh the ECCR after a registration status change to have it detect the status change and get the suspension and activation timestamps. During the suspension window, the ECCR discards change records that have a timestamp later than the suspension timestamp. The utility writes message output for registration status changes for audit and monitoring purposes.
The PowerExchange Navigator displays the current registration status in the
Status
field of the Resource Inspector. After the utility processes a PWXUCREG registration suspension request, the Resource Inspector displays the suspension timestamp in the current system time in the
Suspend Time
field and displays the value Suspended in the
Status
field.
Reactivation of a suspended registration can be performed by using the ACTIVATE_REGISTRATION or CANCEL_SUSPEND_REGISTRATION commands. After the utility processes a PWXUCREG registration reactivation request, the Resource Inspector displays the activation timestamp in the
Active Time
field and resets the
Status
to Active.

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