Under a Specific work Load Index Cardinality Decreases to Zero
(Doc ID 2921676.1)
Last updated on JANUARY 17, 2023
Applies to:
MySQL Database Service - Version N/A and laterMySQL Server - Version 5.7 to 8.0 [Release 5.7 to 8.0]
Information in this document applies to any platform.
Symptoms
Queries start to pile up on the processlist, taking much longer than usual.
Validating the cardinality of the Indexes in use , it was found to be Zero (or very low)
To check the indexes in use:
Cause
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In this Document
Symptoms |
Cause |
Solution |
References |