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RDBPROD: High Number Of Cache Searches/ High Number Of Hash Misses (Doc ID 2468165.1)

Last updated on APRIL 17, 2023

Applies to:

Oracle Rdb Server on OpenVMS - Version 7.3.2.1 and later
Information in this document applies to any platform.

Symptoms

High number of cache searches/ high number of hash misses in RMU/SHOW STATISTICS for a particular cache

Changes

Anything that would cause rows to be fragmented. For example, adding a column to a table could cause many rows to fragment all at once or updating columns with compression enabled could cause rows to fragment over time. Please review the following note to help identify if you have fragmentation on the table.

RDBPROD: How to identify fragmented rows in a table (Doc ID 283203.1) 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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