Processes Executing Pipelined Function Spins On CPU With 100% Utilization
(Doc ID 2445505.1)
Last updated on FEBRUARY 19, 2019
Oracle Database - Enterprise Edition - Version 188.8.131.52 and later
Information in this document applies to any platform.
- Session which is running chain of pipelined functions is hanging and thecorresponding process spins on CPU.
- Session remains active and strace on the process shows nothing.
- Database seems to be in Hang state.
- In most cases process continues to spin forever until it is killed.
- This condition occurs when two or more sessions are running the same pipelined functions simultaneously.
- There are no locks or waiting condition or anything else related to concurrency visible on session level.
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