Skip to content
pvmehta.com

pvmehta.com

  • Home
  • About Me
  • Toggle search form
  • Add new columns in dataframe Python/PySpark
  • Read CSV file using PySpark Python/PySpark
  • create database link syntax Oracle
  • Good Link from metalink 1 Oracle
  • switchover for primary database Oracle
  • In Addition to previous note, following grants needed on PERFSTAT user. Oracle
  • Good Doc 28-JUN-2006 Oracle
  • scripts to take listener.log backup Linux/Unix
  • Transfer SQL Profiles from One database to other database. Oracle
  • Generating XML from SQLPLUS Oracle
  • Goldengate Tutorial Oracle
  • Shuffle an array PHP/MYSQL/Wordpress
  • The most important Tuning Notes Oracle
  • Multiple listeners Oracle
  • Search and replace pattern Linux/Unix

Tag: enqueue

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

Categories

  • AWS (2)
  • Azure (1)
  • Linux/Unix (149)
  • Oracle (388)
  • PHP/MYSQL/Wordpress (10)
  • Power-BI (0)
  • Python/PySpark (7)
  • RAC (17)
  • rman-dataguard (26)
  • shell (149)
  • SQL scripts (337)
  • Uncategorized (0)
  • Videos (0)

Recent Posts

  • findinfo.sql (SQL for getting CPU and Active session info)27-May-2025
  • SQL Tracker by SID sqltrackerbysid.sql22-Apr-2025
  • How to connect to Oracle Database with Wallet with Python.21-Mar-2025
  • JSON/XML Types in Oracle18-Mar-2025
  • CPU Core related projections12-Mar-2025
  • Exadata Basics10-Dec-2024
  • Reading config file from other folder inside class24-Sep-2024
  • Python class import from different folders22-Sep-2024
  • Transfer SQL Profiles from One database to other database.05-Sep-2024
  • Load testing on Oracle 19C RAC with HammerDB18-Jan-2024

Archives

  • 2025
  • 2024
  • 2023
  • 2010
  • 2009
  • 2008
  • 2007
  • 2006
  • 2005
  • find_pk.sql /* Find Primary Key */ Oracle
  • oracle Dba site Oracle
  • Oracle 11g Environment Setup Oracle
  • grep multuple patterns Linux/Unix
  • telnet listening Linux/Unix
  • Vivek’s egrep commands to trace problem. (on linux x86-64) Linux/Unix
  • Good notes for shared pool Oracle
  • Korn Shell Arithmatic Linux/Unix

Copyright © 2025 pvmehta.com.

Powered by PressBook News WordPress theme