This permanent configuration parameter was introduced in Novell® eDirectory™ 8.7. It does not apply to any version of Novell eDirectory or NDS® before 8.7.
NOTE: This is intended for development and support use only.
The Change Cache is a performance enhancement mechanism that has been part of NDS and eDirectory since NDS 7. It is used for keeping track of changes or deletions of values on a per-partition basis. When a value is changed or deleted, its entry ID is added to the Change Cache so that the synchronization, purge, and other processes can make use of it when handling changes. When a partition has only one non-subordinate reference replica (that is, the master replica + 0 or more subordinate references), then maintaining the Change Cache does not yield any performance enhancement. In fact, in this scenario, the extra processing to maintain the Change Cache is needless overhead. In eDirectory 8.7, the Change Cache is bypassed in the above scenario if this permanent configuration parameter is set to 1. The Directory can be forced to always maintain the Change Cache by setting the parameter to 0. The default value is 1, which enables the Change Cache bypass feature when the eDirectory agent detects the above scenario.
CHANGE CACHE AUTO CONFIG provides a way to either force the Change Cache to always be used, or to automatically detect when it is better to not use the Change Cache. The supported values are:
0 (do not auto-config, that is, always use the change cache)
1 (auto-config, that is, determine dynamically if Change Cache is needed)
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