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Comment Column Of View Statement Is Waiting For 1 Second in RAC (Doc ID 1962018.1)

Last updated on SEPTEMBER 04, 2023

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database 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.


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.



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