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ENQ: KO – FAST OBJECT CHECKPOINT tips

Posted on 25-May-202325-May-2023 By Admin No Comments on ENQ: KO – FAST OBJECT CHECKPOINT tips

On reporting queries, there are too many “enq: KO – fast object checkpoint” wait event.

All reporting queries are doing full table scans concurrently. Oracle uses direct path reads instead of db file scattered reads. And direct path reads require a checkpoint

"_serial_direct_read"=NEVER
Parameter                                          Session Value                  Instance Value
-------------------------------------------------- ------------------------------ ------------------------------
_serial_direct_read                                auto                           auto

Oracle Tags:database, database parameter, databases, enqueue, Get session information, init.ora, oracle, Oracle wait events, performance, pvmehta.com, SQL, tuning, undocumented parameter

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