Comment Column Of View Statement Is Waiting For 1 Second in RAC
(Doc ID 1962018.1)
Last updated on FEBRUARY 25, 2019
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata 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.
***Checked for relevance on 23-May-2016***
On a RAC environment only, with no load on the database, observed that the "COMMENT ON COLUMN ..." command, which sets a comment on a column of a view, is taking much longer than in previous versions.
TKPROF for the sql tracing shows that there is a 1 second wait "Wait for Table Lock" for every comment statement.
Upgraded to 18.104.22.168.
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