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Queries Generating High "Cell Single Block Physical Read" Wait Messages (Doc ID 2119510.1)

Last updated on OCTOBER 06, 2022

Applies to:

Oracle Database Backup Service - Version N/A and later
Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.


Symptoms of this issue will appear as follows:

Event Waits      Total Wait Time (sec)      Wait Avg(ms)      % DB time      Wait Class
cell single block physical read               19,654,319 4847,1 0 9.7 User I/O


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