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Drop Materialized View Hangs with 'Enq: JI - Contention' (Doc ID 1126123.1)

Last updated on FEBRUARY 02, 2022

Applies to:

Oracle Database - Enterprise Edition - Version 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.


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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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