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EM13c - High Cluster Waits & Loader Jobs Performance Issues Encountered After Repository Upgrade To 19C (Doc ID 2678146.1)

Last updated on NOVEMBER 18, 2022

Applies to:

Enterprise Manager for Oracle Database - Version and later
Information in this document applies to any platform.


AWR reports has shown up huge(unusual) cluster waits. Even a simple insert was taking hours together. Other symptoms include Job system not responding and loader back offs continued to exist.

Underlying issue turned out to be blocks being lost over the interconnect and that could cause severe cluster waits.



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