ORA-12827 Occurred On MERGE Statement - Intermittently Parallel MERGE executes serially
(Doc ID 1552909.1)
Last updated on FEBRUARY 28, 2019
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168 [Release 11.2]
Information in this document applies to any platform.
- Parallel MERGE executes serial sporadically even when processes are available for parallel execution.
- MERGE Statement returns ORA-12827
e.g. MERGE Statement returns ORA-12827: insufficient parallel query slaves (requested 16, available 0, parallel_min_percent 25)
- px_trace shows information similar to the following:
kxfpValidateSlaveGroup [ 2595/ 2540]
serial - too few slaves after cb(qerpxSendParse)
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