Configuring for high availability journal performance enhancements - assure_mimix - 10.0

Assure MIMIX Administrator Reference

Product type
Software
Portfolio
Integrate
Product family
Assure
Product
Assure MIMIX™ Software
Version
10.0
Language
English
Product name
Assure MIMIX
Title
Assure MIMIX Administrator Reference
Copyright
2023
First publish date
1999
ft:lastEdition
2024-05-07
ft:lastPublication
2024-05-07T13:36:02.962500

MIMIX supports IBM’s High Availability Journal Performance IBM i option 42, Journal Standby feature and Journal caching. These high availability performance enhancements improve replication performance on the target system and provide significant performance improvement by eliminating the need to start journaling at switch time.

MIMIX support of IBM’s high availability performance enhancements consists of two independent components: journal standby state and journal caching. These components work individually or together, but are enabled separately.

Journal caching enables the system to cache journal entries and their corresponding database records into main storage and write to disks only as necessary. Journal caching is particularly helpful during batch operations when large numbers of add, update, and delete operations against journaled objects are performed.

Journal standby state can only be used in data groups configured for single-threaded database apply processing. Journal caching can be used in any data group that supports user journal replication. For restrictions of MIMIX support of IBM’s high availability performance enhancements, see Restrictions of high availability journal performance enhancements.

Note: For more information, also see the topics on journal management and system performance in the IBM eServer iSeries Information Center.