Drop Materialized View Hangs with 'Enq: JI - Contention'
Last updated on FEBRUARY 02, 2017
Applies to:Oracle Database - Enterprise Edition - Version 10.2.0.4 to 188.8.131.52 [Release 10.2 to 11.2]
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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