Drop Materialized View Hangs with 'Enq: JI - Contention'
(Doc ID 1126123.1)
Last updated on NOVEMBER 07, 2019
Applies to:Oracle Database - Enterprise Edition - Version 10.2.0.4 and later
Oracle Database Cloud Schema 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
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.
When running a DROP MATERIALIZED VIEW the session hangs.
The hang has been reproduced and this time we have some trace files generated:
Connect to any session and run the following commands:
This wait event was determined to be due to a DBMS_JOB entry to refresh the mview we are trying to drop. So after removing this job we could then successfully drop the mview.
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