One of the best things in my job:
I learn from you folks out there. Everyday.
Credits here go to Maciej Tokar who did explain the below topic to me via LinkedIn – thanks a lot, Maciej!
Locks are not being closed fast enough, resulting in gc freelist waits
You can find a reference for Global Cache Freelist in the Oracle Documentation. This issue here can or will lead to database being slow, up to complete hangs. Based on my research it looks as the issue is not related to RAC only but a general thing. In your session …
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