SQL Queries Run In Parallel after enabling DB In-Memory Column Store(IMCS)
(Doc ID 2655885.1)
Last updated on MAY 14, 2020
Applies to:Oracle Database - Enterprise Edition - Version 18.104.22.168 and later
Information in this document applies to any platform.
When You move some tables into In-Memory Column Store(IMCS), All queries accessing these tables ran with parallel degree 2.
Environment details :
- EXADATA System
- No PARALLEL Hint used in query
- No DOP set on table or indexes related to that query.
But the same query used to execute in SERIAL mode before enabling IMCS.
Enabled In-Memory Column Store feature for those tables.
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