Table of Contents

Search

  1. Preface
  2. Summary of PowerExchange New Features and Changes
  3. PowerExchange Installation and Upgrade
  4. PowerExchange Client for PowerCenter
  5. PowerExchange Condense
  6. PowerExchange Listener
  7. PowerExchange Logger for Linux, UNIX, and Windows
  8. PowerExchange Navigator
  9. PowerExchange Monitoring and Tuning
  10. PowerExchange Utilities
  11. PowerExchange for Adabas
  12. PowerExchange for DB2 for i
  13. PowerExchange for DB2 for Linux, UNIX, and Windows
  14. PowerExchange for DB2 for z/OS
  15. PowerExchange for IMS
  16. PowerExchange for Microsoft SQL Server
  17. PowerExchange for MySQL
  18. PowerExchange for Oracle
  19. PowerExchange for PostgreSQL
  20. PowerExchange for SAP HANA
  21. PowerExchange for VSAM and Flat Files

Staging Files for Improved CDC Performance in an ASM Environment

Staging Files for Improved CDC Performance in an ASM Environment

If the Oracle active and archived redo logs from which PowerExchange Express CDC for Oracle captures change data are in an ASM environment, you can optionally write chunks of Oracle redo log to a staging file. This feature improves CDC performance, increases data throughput, and reduces ASM CPU usage, without having to implement Oracle dual logging outside of ASM.
PowerExchange Express CDC uses one staging file for each active Oracle redo log thread.
To enable the use of staging files, perform the following actions:
  1. Create a staging directory on the machine where the ASM instance to which PowerExchange Express CDC connects resides.
  2. Configure the ASMSTAGING statement in the PowerExchange Express CDC for Oracle configuration file, pwxorad.cfg, to point to the staging directory.
For more information, see the "Express CDC for Oracle" chapter in the
PowerExchange CDC Guide for Linux, UNIX, and Windows
.

0 COMMENTS

We’d like to hear from you!