Database Administration (MOSC)

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SQL*Net Message to client wait event

edited Apr 27, 2019 12:34AM in Database Administration (MOSC) 1 commentAnswered

Hello,

I was evaluating a query that's currently running running slow in our acceptance testing databases. As reference, I'm running RHEL x86_64 on an Oracle 12.1.0.2.0 database.  Stats on the tables are gathered via dbms_stats.gather_table_stats with cascade set to true, and method_opt=>'for all columns size 1' due to vendor recommendations. I ran a query that the users reported timeouts with. When doing so, I noticed the majority of the wait events are from the 'SQL*Net Message to client'. I'm running the query locally on the server. Has anyone encountered a situation in which the majority of the wait events spent on

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