High Waits on 'Db File Sequential Read' Due to Table Lookup Following Index Access
Last updated on JULY 17, 2017
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168 [Release 8.0.3 to 11.2]
Information in this document applies to any platform.
A query can wait on 'db file sequential read' for a long time even if the execution plan appears to be optimal. This usually happens when the result set of index scan is large.
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