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Tag: Oracle wait events

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

GSQ.sql

Posted on 19-May-202325-May-2023 By Admin No Comments on GSQ.sql

This SQL will be used to identify SQL details of given Session. You need to pass SID and INSTANCE_ID as INPUT. This query will provide session details, SQL_ID, SQL_EXEC_START time and other transaction level details. set echo off feedback off verify offcol Transaction_id format a20col username format a8col days format 99.99col hours1 format 999999col TX_HRS…

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