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enq: HV - Contention

LauryFeb 12 2015 — edited Feb 16 2015


Hi,

I have an Oracle 11gR2 database running on Exadata.

For a long running batch/job, one of the Top wait event that i have is "enq:HV - contention".

I have found that adding the hint HWM_BROKERED in the relatded SQL-statement (this is an insert), can be a possible solution.

See Metalink Note: 452719.1

Does someone has experience with this hint? It disables some _* parameters. Why can this be a work-around?

Doing so, will not ensure that the HWM is protected.

Thanks and Regards

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Locked on Mar 16 2015
Added on Feb 12 2015
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