EXADATA : DATABASE HANG ON CELL SMART TABLE SCAN'<='PX DEQ: EXECUTE REPLY in 12C
(Doc ID 2362938.1)
Last updated on FEBRUARY 20, 2019
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168 [Release 12.1 to 12.2]
Oracle Exadata Storage Server Software - Version 22.214.171.124.0 to 126.96.36.199.2 [Release 11.1 to 11.2]
Information in this document applies to any platform.
Database performance decreased noticeably after upgrade to 12.1.
Hang Analyzer shows multiple parallel queries waiting on 'CELL SMART TABLE SCAN'<='PX DEQ: EXECUTE REPLY'
Cell image version is below version 188.8.131.52.0.
Database was recently upgraded to 12.1.
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